- a ?
2))

Contributions dr l'6tude
de la faune entomologique du Ruanda-Urundi(Mission P. BASILEVSKY 1953)

XXVII. DipteraPtychopteridae
et Tipulidae
by Charles P. ALEXANDER(Amherst. Massachusetts)

I arn greatly indebted to Mr. P. Bnsrnwsrv, Chief of the Entomological
Section of the Mus6e Royal du Congo Belge, for the opportunity to study
the crane-flies,Ptychopteridae and Tipulidae, taken by him on his recent
trip to the easternCongo.Despite the relatively small number of species,
the collectionproved to be of unusual interest and added materially to ourknowledge of this prolific region. Types and uniques of the specieshave
been returned for depositionin the Mus6eRoyal du CongoBelge;duplicatesof certain of the specieshave been retainedin my own collection.
Fam. PTYCHOPTERIDAE
Ptychoptera basilewskyi, sp. n.
General coloration black, the fourth abdominal tergite and basal sternites brightened; coxae pale, the posterior pair more infuscated; femora
obscure yellovi', the tips passing into black; tibiae and basitarsi brownish
black, remainder of tarsi black; wings brownish yellow with a narrow entire
crossband at cord; veins ,Rt and R, * r approximated, narrowing the cells
and shortening vein 8r, the latter transverse; male hypopygium with thetergal lobes and dististyle very long and slender, acute at tips.
MaLe.-- Length about 8 mm.; wing 7.5 mm.; antenna about 6 mm.
Mouthparts yellow; palpi obscure brownish yellow, the terminal segment
a little darker. Antennae brownish black, more than three-fourths the lengthof wing; flagellar segments elongate-cylindrical, the dorsal verticils long, theventral series short, approximately twice as long as the dense pale pubesc:ence.Head intensely polished black.
Thoracic dorsum black, somewhat less polished than the head, the anteromedian region of the praescutum and the central part of the scutellum
vaguely more reddened. Pleura and pleurotergite black. Halteres with stem
weakly darkened, the base narrowly yellowed, the knob dark brown. Legs
rvith the fore and middle coxae brownish yellow, the posterior pair more

267
Arr"N.Mus. Coxco TrRvunnx, in-8o, Zool., 36, 1955.

strongly infuscated;trochantersyellowish brown; femora obscureyellow,
the tips passinginto black; tibiae and basitarsi brownish ,black,the remainder of tarsi black. Wings (fig. l) brownish yellow, the costal border narrowly more brownish yellow; posterior prearcular region paler; wing apex
as far basad as the fork of E, * 5 weakly infuscated; a narrow conspi,cuous
darker brown crossband at the cord, widest at anterior end, gradually narrowed behind, becomingobsoleteat the bend of the distal sectionof vein Cu,,
the band solidy colored, not interrupted by subhyaline areas, as in ghesquiArei; no Carkened cloud.sat the forks of the veins; veins brown, palein the costal field. Abundant macrotrichia in outer wing cells, involving
the outer two-thirds or more of the radial and medial cells, extending
mor,ebasad in cell Mr; basad of cord with trichia in outer end of cell Crr.
Venation: R1 and Rz*3 approximated,narrowing the cells and shortening
the transversevein Rr; r-m joining -Rnsome distancebeyond origin.
Abdominal tergites chiefly black, the fourth segment orange, the thirdand outer end of the second vaguely brightened; basal and intermediatesternites more extensiveiy yellowed; outer lobes and a.ppendagesof the hypopygium paling to obscure yellow. Male hypopygium (fig. 2) with theninth tergite, 9t, prof.oundlydivided into two long slender decurved lobes
that gradually narrow iuto acute points, before apex on mesal face with asmall knob or tubercle. Basistyle, b, entirely distinct from both the tergite
and the sternite. Disistyle, d, similarly long and slender, gradually narrowed to the acute apex, the surface with long conspicuoussetae,those of
the ventral portion more evident; a very short stout lobe at base of style,tipped with abundant black setae,with a longer and more slender lobule
immediately beyond directed inwardly. Ninth sternite 9s, extensive, oD
posterior margin at near the middle of its height with a small flattened pale
blade that is margined with several very long black setae. Central organsof genital chamber orange, not sufficiently clear in the unique dried type
to be descrilled or figured.
rlolotype, 6, urundi: Bururi, 1.800-2.000
meters, March 5-l2.lgir3 (P.
Besrr-Ewsrv).
I take great pleasure in naming this very interesting fly for Mr. BesrLEwsKY,who has added mat.erialiy to our knorvledgeof the African crane-fly
fauna. The most s'imilar regional species, include Ptychoptera uelensis
Arrxexorn and P. ghesqui,drei(Corr.enr), which have the thorax uniformly
darkened,as in the present fly, differing in details of pattern and venationof the wings. The male hypop5rgiumof these two specieshas not been described.In the present fly, the extreme length and slendernessof the tergal
iobes and the dististyle reach the maximum as known for any speciesin
the local fauna.
The members of the genus now known from the Ethiopian region. including Madagascar,are as follows :Ptychoptera afri,canaATT.xANDER;
Entomologist, 53: l0l-102; 192,0.Southern
Nigeria.
268

P. basilewsltyi.sp. n.; describedherewith. Belgian Congo: Urundi.
P. camerounensi,sAr-E:<e'',-nrn;
Insec. Inscit. Menst., 9: 14'5-146;1921.Cameroon.
P. capensisArrxeNoEn;Ann. South African Mus., 17: 139-140,
p.I 10, fig. I( w i n g ); I9 1 7 . N a ta l , T ra n svaal.
P. gh,esqui'arei(cot-renr); Bull. I\{us. Roy. Hist. Nat. Belgique, ll, no z: l-4,
fig. (vring), as Liriope; 1935.Belgian Congo: Eala.
P. hopkinsz'Eowenns;Stylops, I : 99; 1932.Uganda.
P. mndagascari,ensis
Ar-Exexnrn;Bull. Brooklyn Ent. soc., 32 142-143 lgz7.
MaCagascar.
P. uelensi,sAr-nxenonn;Rev. zool. Bot. Africaine, l6 : 25-2,6,
fig. (wing); 1928,.
Belgian Congo; flpper Uele.
Fam. 'fIPULIDAETIPULINAE
Nephrotoma chaetopyga ArnxeNonR
NephrotomachaetopagaAuxeuonn; Ann. Mag.Nat. Hist., (g) z: 98-99;lg2l.
urundi: Bururi, 1.800-2.000
meters. March l-lzJgbg (p. Besrr-nwsxv;.
Nephrotoma fuscipennistriflava

Anxenunn

Nephrotoma fusci,ytennistri.flaua Alexnxuen; Ann. Mag. Nat. Hist., (9) 7:
1 0 7 ;1 9 2 1 .
L l m n d i : B u ru ri , 1 .8 0 0 -2 .000
meter s, M ar ch 5- 12.1953( P. Besr lr wsxv).
fromFormerly
Uganda and Tanganyika.
Nephrotoma ruanda, sp. n.
General coloration black, including the head and thorax, antennae,halteres and legs; vertical tubercle orange; abdomen black, the basal ring of
secondtergite and basal two sternites orange; wings with a strong brownish
tinge; male hypopygium with the outer dististyle long and narrow; innerdististyle very slender, with a large membranous dorsal crest, the outerbasailobe heavily,blackened;eighth sternite large and sheating,the convexly
rounded posterior margin with abundant long coarsesetae.
MaIe. - Length about I I mm.; wing 12.5 mm.; antenna about 5 mm.
Frontal prolongation of head uniformly black; nasus elongate; palpi
black. Antennae black throughout; flagellar segmentsrather strongly incised,
a little exceeding the verticils. Head black, with an extensive dull orange
area involving the unusually high and conspicuous vertical tubercle andthe posterior vertex immediately behind, the posterior part of head andthe narrow orbits black.

269

5

I
Fig. r. - Ptychoftcro ltasilczrsA.fi, sp. r.r.; venation.
Ptychol,tara basilezc's/,rJ'i,
sp. n.; male h1'popygium,lateral.
F'is. :. - Nclrltrotoma ruando, sp. u.; venation.
FiS. +. - Tifula (Afrotil,ulo) inlracta, sp. r1.i venatiotr.
Fig. S. - Ncfhrotonto ruando, sp. n.; rnale h1'popygium,lateral.
trig. 6. - Ncl,ltrototna ruando, sp. n.; rnale hypopygiunt, details.
Fis. Z. - Ncl,hrototrttt.
subdcntottt,sp. n.; ntale hypopygium,details.
Fi.q. 8. - Til,ula (Afrotilutlo) infr<rcfa, sp. n.; male hypopygium, tergite.
Fig. z. -(Symbols: c, aedeagus; D, basistyle: r/, dististt'le; t/, gonapophl'sis; y', phallosome:s, sternite; f, tergite).

270

Thorax uniformly black, the surface subnitidous. Halteres black. Legs
uniformly black, coxae faintly pruinose; claws toothed. Wings (fig. 3) witha strong brorvnish tinge, the small stigma still darker; prearcular and costal
regions slightly darker; veins dark brown. About l5 trichia in proximal endof stigma. Venation : Sc2 ending opposite origin of the short Rs; cell M1
harely sessile.
Abdomen black, the basal ring of the second tergite, and proximal twosternites orange; a vague brightening at base of third tergite. MaIe hypopygium (figs. 5, 6) with the ninth tergite, 9t, having the posterior borderpr,oduced into two low lobes, separated by a v'ery narrow U'shaped notch,
the lo,bes further bilobulate by a shallow emargination, the mesal lobule
slender, the lateral one low and flat, both with abundant black apicules.
Ninth sternite. 9s, produced caudad beyond the level of the basistyle. Outerclististyle, d, unu'sually long and narrow, especially on outer half. Innerdististyle distinctive, very slender, with a large membranous dorsal crest;
outer basal l.obe a strong blackened structure that b'ears smaller spinose
points. Phallosome,p, with the apophysesappearing as flat darkened blades,
incurved at tips toward th.e aedeagus,at base produced into a small oval paleltlade on either side. Eighth sternite, .9s,large and sheathing, the posteriorborder convexly rounded, provided with abundant long coarse setae, Ionger
and more conspicuous at and near the midline where the plate is slightly
procluced; a u'eak median furrow extends backward a,bout one-half the
distance, margined with strong setae.
Holotype, 6, Ruanda : Rutovu, for6t du Rugege, 2.350meters, January953 (P. Bnstrnwsrv).
20-23.1
In its geueral appearanceand structure of the male hypopygium, thediffering in allpresent fly is most like Nephrotoma chaetopggoAr.ExeNDER,
and structure of the hypopygium.
details of ccrtroration
Nephrotoma tuwenzotiana At-rxenonR!'lephrotorne rlrwenzoriarva Auxnxnrn; Bull. Amer. Mus. Nat. Hist., 43:. 20,
fig. 6; 1920.
Nephrotoma ruwenzori,ana Alrxexurn; Rev. Zool. Africaine, ll, fasc. l:
14-16; 1923.
Ruanda: Rutovu, for6t du Rugege, 2.350 meters, January 20-23.1953(P. Besrrnwsxv).
Uruncli: Bururi, Lll00-2.000meters, March 5-12.1953(P. Bestuwsrv).
The type rvas from the Congo side of Mount Ruwenzori, at an altitudeof 3.000meters. Frontal prolongation of head obscure yellow on sides, narrowly black above, including the nasus. Occipital brand and darkening verysmall. The females have the anterior part of the mediotergite yellow, oneu'ith the scutellum likewise vellow, the other black. Abdomen uniformly
black, one female rvith the second tergite extenlively yellowed.

271

Nephrotoma subdentata,sp. n.
Generalcoloration of mesonotumpale yellow, the praescutum with threebrown stripes, the laterai pair appearing outcurved; antennae (male) r'elatively long, nearly one-half the body; fore femora black, the basal third
Yellow, remaining femora chiefly yellow with about the outer fourth black;abdominal tergites yellow, the posterior borders of the segments with a
subcircular brown spot, these becoming smaller on outer segrnents;eighth
segment blackened. forcring a narrow subterrainal ring; male hypopygium
vi'ith the lor,vermargin of beak of the inner dististyle produ.cedinto a blackened spine or tooth.
Male. - Length about 10-10.5mm.; wing l0.b-il mm.; antenna about
4.5-5mm.
F e m al e . - L e n g th a b o u t 12- 16mm .; wing ll- l3.b mm .
tr'rontal prolongation of head short, polished yellow, the slender nasus
darker; palpi brown. Antennae (male) relatively long; scape and pedicel
yellow, flagellum brownish black to black, the basal swellings a trifle darker;
flagellar segtnents longer than the verticils. Head orange; occipital brandt'elatively small and insconspicuous;vertical tubercle high, virtually entire.
Pronotttm orange yellow. Mesonotal praescutum with the res'tricted
ground pale yellow, tl'ith three brown stripes, the anterior end of the median stripe restrictedly paler, late::al stripes appearing outcurved to theborder; scutum yellow, the lobes extehsively blackened; scutellum reddish
yellow; mediotergit,e whitened, the posterior border narrowly darker pleurotergite reddjsh yellow, the anterior half more .lvhitened,confluent r,vith asimilar area on the pteropleurite; remainder of pleura reddish, the dorsopleural region pale yellow. Halteres infuscated, the 'baseof stem narrowly
reddened. Legs with the coxae and trochanters yellow; fore femora black,the basal third yellow-, remaining femora chiefty yellow, with about theouter fcurth blackened; tibiae brown, the tips narr,orvly dark browntarsi passing into black; claws toothed. Wiirgs tinged with brown, theprearcular and costal fields more yellowish brown; stigma oval, darker
bt'own, with sparse trichia; veins brown, more yellowish brov,rn inthe brightened fields. A very few trichia in extreme outer end ofcell Rr. Venation: l?s about one-half longer than the basal section ofll+ * ol cell illt short-petiolate to narrowly sessile; n1.-c'u,a short clistance
before lork of M.
Abdominal tergites yellow, the posterior borders with a subcircularbrown spot, nct pointed at anterior end, the areasbecoming smaller on outer
segments; eighth segment blackened, forming a narrow subterminal ring;sternites and hypopygium yellor,v.Male hypopygium (fig. 7) generally as inthysia, with ,the ninth tergite, outer dististyle, gonapophysis, and eighthsternite mueh the same. Inner dististyle, d, with the beak slender; dorsal
crest low and pale, precipitous behind; base of lower beak produced into
an acute blackened spine, directed toward the broadly obtuse blackened
iower beak, suggesting the specific name,272Holotype, 6 . Kilembe, Ruwenzori Range,Uganda,4.500feet, DecemI935 (Fnro W. Eowenos); British Museum(Natural Histo'
ber 1934-Januaryry). Attotopotype, g . Paratype,| 6 , Fort Portal, Ruwenzori Range,Uganda,
5.000feet, December1934-January1935(Euwenos);I 6 , Kalinzu Forest,
British Museum;3 ? L
Januarv 1935(T. H. E. Jec;rsotr),
southwestUga.nda,(P. Bemeters, March 5-12.1953
Bururi, Urundi, Belgian Congo, 1.80G'2.000
srr-rwsrv). Adclitional material from the type locality in the British Museum (EowenosN" 56).
The presentfly was one of rather numerousspeciesof.Nephrotoma di'scoveredby EowenDson lVlountRuwenzori.It is most nearly allied Io Nephrotoma thysia Auxennr.n, differing in details of coloration and of the malehypopygium, as describedabove.
Tipula Llxxerus
Afrotipula, subgen. nov.
Frontal pr.olongation of head short and stout; nasus short. Ti'bial spur
formula. l-l-2; claws (male) simple. Wings without squamal setae; veins
beyond cord with abundant trichia. Venatiotr: Cell M1 sessilei Ms *+ Iong,
more than twice r-nti nl-cu, basal section of.M, and m in oblique alignment.
ilIale hypopygium small, the tergite, sternite and basistyle fused into a cont,inuous ring. Outer dististyle conspicuously bifid. Ovipositor with the cerci
long and slencler, straight; hypovalvae shor,t, compressed-flattened,the tips
obtusely rounded.
Type of subgenus. - Tiputa (Afroti,puta) infracta, sp' n. (Ethiopian Region) . Ti,puta (Afrotiputa) brachycero Rtrnn likewise belongs here.
The most nearly related subgeneric groups include Ti.pula LrnNerus,
Yamatoti,puln MnsTJMURA,and, Acutipula AtrxexurR. Becau,seof the combination of characters listed above, it appears inadvisable to place these
Ilies in any of these groups. The sessile cell Mt gives an appearance somer,vhat as in Nephrotoma Msrcrx, Ozodicera Mecquenr, and some other unrelated groups.
Tipula (Afrotipula) infracta' s'p. n.
Size large (wing, male, over 18 mm.); antennae (male) elongate; generalcoloration grayish. brown, the praescutum with four poorly defined more
reddish brown stripes that are narrowly bordered by darker; wings yellowish brown, with a very restricted dark pattern, including a linear area incell R1 before the stigma; abdominal segments conspicuously bicolored.
Mule. - Length about 17-19mm.; wing 18-19mm.; antenna about 6.58 mm.
Frontal prolongation of head brown above, darker below; palpi black.
Antennae elongate; basal three or four segments yellow, the succeeding flagellar s,egmentswith the small basal enlar'gementsmore blackened, the pe-273

diclls yellorvish brown to light brown, the outermost segments more uniformly darkened; verticils long and conspicuous,the longest,a little shorter
than the segments. Head brorvn; vertical tubercie low, with a deep mediansplit; anterior vertex broad.
Pronotum tight brovrn. Mesonotal p,raescutumwith the ground grayish
brown, with four poorly defined more reddish brown stripes that are bestdelimited by still darker borders, the lateral margins of the intermediatepair of stripes becoming subobsolete;scutum chiefly reddish brown; scutellum and mediotergite yellow with a central brown line, broadest on thescutellum; pleurotergite with the suture between the anapleurotergite andkatapleurotergite deeply incised and weakly darkened. Pleura, including thedorsopleural membrane, chiefly yellow, the ventral sclerites somewhat moredarkened. Halteres infuscated, base of stem yellow, knob somewhat more
intensel5rdarkened. Legs with the coxae brownish yellow; trochanters yellow; femora yellow, the tip,s weakly darkened, the amount su,bequalon all
legs; remainder of legs yellow, the tibial tips even less infuscated;outer tarsal segments passing into black. wings (fig. 4) with a yellowish browntinge, the costal region somewhat brighter yellow; a restricted and inconspicuous brown pattern, the darker areas at origin of .Rs, a linear dash incell Rr before the paler brown stigma, and very inconspicuous darkenings
along cord and outer end of cell 1sf Mr; still less evident marginal clouds
at ends of veins, smallest at and near wing tip; centers of outerradial cells vaguely cloused; cell Cu, rnore infuscated; ve,ins brown,sir., Rr, 1n-cu and some adjoining veins somewhat more yellowish
brown. venation : rRs elongate, about twice the long nn-cu; R, , strongly*
persistent, in direct longitudinat alignment with Rr; cell /sf M, elongate,strongly polnted at outer end, cell /lf, narrowly to more broadly sessile;M"-_n longer than basal section of Mr
1:: and nearly equal to basal section
of.M"; cell Mn short and broad, m-cu being only a littte shorter than either
IlrIo or distal section of.Cu,r.
Abdomen conspicttouslybicolored; tergites with a major brown central
area on the posterior ring, the basal clearring yellow, lateral tergal borders
broadly gray, the posterior margins very narrowly pale; sternites yellow,
trivittate with dark broln, interrupted on the basal rings, outer sternites
more uniformly darkened; hypopygium yellow. Male hypopygium (fig. g)with the tergite, .9t, produced into a broadiy transverse plate, the caudal
margin of which is shallowly emarginate; lateral lobes long and conspicuous, each r,r'ith a dense group of blackened peglike spines, with a smaller
similar patch of .spinesat the cephalic lateral part of the plate; remainder
of 'tergal surface with unusually strong setae,the more basal and lateral ones
longer and more powerfttl. Basistyte very small, unarmed. Outer dististyle
pale and translucent, deeply bilo,bed,the more dorsa,lor anterior lobe larger,
more obtuse at apex.
Holotype, 6, Fort Portal, Ruwenzori Range, uganda, 5.000 feet, December 4, 1934(Fnnn W. Enwenns); No zb. paratopotllpe, I a ; 5 additional27.\

males in British Museum; u rnostly taken in house at light. No females seen >EuweRos.Paratype 6, Nyabikenke, terr. Nyanza, Ruanda, Belgian Congo,
1.700meters, January 12, 1953 (P. Beslmwsrv).
Readily distinguished from the only other member of the subgenus atpresent known, Tipula'(Afroti.pula) brachAcera Rrnorl, by the long antennae,and the pattern of the wings and body.
Tipula (Acutipula) urundiana, sp. n.
Size large (wing, male, over 20 mm.); mesonotum with four brownish
gray stripes that are broadly margined with brownish black; mediotergite
yellow, with two large oval brownish black areas on disk; pleura yellow,
with a brown dorsal stripe; femora brownish yellow, the tips black; claws(male) bidentate; wings rvith a brownish tinge, restrictedly patterned withdarker brown and obscure whitish, the latter including an area before cord,crossing cell 1sl IlI, inlo the bases of cells Mt to M3, inclusive; narrow brown
seams on anterior cord and over posterior end of nx-cu; abdomen reddish
brown, the tergites rvith three brownish black stripes; male hypopygiumwith the tergite produced into a central plate, the apex weakly notched andspiculose; inner dististyle with a low rounded lobe on outer margin nearbase provided with about sixteen spinous setae.
M(rle. Length about 2l-22 mm.; wing 22-23mm.; antenna about 4-4.1mm.
Fema'!,e.Length about 27 mm.; wing 26 mm.
Frontal prolongation of head obscure fulvous above, darker on sides;
nasus elongate; pa'lpi black. Antennae with scape and pedicel yellow; firstflagellar seginent brorvnish yellow, succeedingsegments passing into brown;basal enlargements small, verticils very long, the longest about, one-fourth
longer than the segment. Head above fulvous, darkened ,behind the eyes
and beneath; vertical tubercle very low to scarcely evident; anterior vertex
relatively narrow, about three times the greatest diameter of scape.
Pronotum yellow medially, with a brownish black spot on sides. Mesonotal praescutum with the ground brownish black, representing the broadborders of fcur more brownish gray stripes, lateral praescutal margins restrictedlv obscure yellow; each scutal lobe with two confluent brownish grayareas bordered by brownish black, the central region restrictedly yeltow;
scutellum light yellou', parascutella black; mediotergite yellow, with twolarge oval brownish black areas separated by a nearly equal central groundarea, the posterior border broadly yellow; pleurotergite darkened above,yellow beneath. Pleura yellow with a conspicuous dorsal brown s.tripe, extending frorn the cervical region to the wing root, including the most dorsal
pleurites. Halt-eresslender, dark brown. Legs rvith the coxae and trochanters
yellow; femora obscure brownish yellow, the tips black; tibiae ,brownish
yellow, the tips more narrorvly and gradually infuscated; tarsi passing into
black; claws (male) with two teeth, the outer one larger. Wings (fig. 9) witha brownish tinge, restrictedly patterned with darker brown and obscureivhitish areas; preat'cular and costal fie,lds darker, especially cell Sc; stigma

275brown; narrow brown seamsat anterior cord, in basesof cells .R3and .Ru,
and over rn-clr,,the last widened behind; the whitened areaslie before cord,crossingcell 1sl M, and including the basesof cells Mt, 2nd M" and Ms;r3

r5l"ig. q. - 7'if*la (.'lcutipulo) rtruruIianrt,sp..n.; vetration'-"Tiltula(Aiutilrulo) rtitndiano, sp. r.r.: ntale ht'popygium,details.
Fie.
" ro.
Fi's. II. - Lirnonio Qtctalimnobia) oligotriclo, sp. 1r': venatiotr.
Fig. rz. - Linmofhila (Afrolitrtrrol,lila) ut'undiana,sp. n-; venation..
Fig. rl. - Lintonia lllctalinurobio).oliqotric.ha,sp. Ir.; male-h1'popygium.
Iris."ra-"- Limnof,hila'(-4frotinrnol,hilu) urundiato, sp..rt.; male hypopygium.
-Fig.
scl'chcllanrntsubirnnaculata,subsp.n.;ri - To.toihina (-Ciratochcilus')
nralc lr1'pop]'gium'

veins brown. Squarna wi,th setae. Venation: Cell R2 relatively broad;Ms *o subequalto or longer than basal section of.lVt + si Petioleof cell M1
and m subequal.
276

Abdominal tergites reddish brown to darker brown, with three broad
brownish black stripes, the pos,terior borders of segments very narrowly
pale; sternites yellow; hypopygium chiefly dark brown. Male hypopygium(fig. l0) with the ninth tergite, -9f,producedposteriorly into a narrow central
plate, its apex shallowly notched, the lower face back from tip with twoparallel flanges;apex of lobe with abundant black spinoussetaethat become
inore elongateback from the tip, merging gradually into normal setae.Outerriististyle, d, large, pale, the apex truncated, the outer half slightly broader
than the base; setae numerous, lacking on the obtuse outer apical portion.
Inner dististyle with the beak compressedflattened, obtuse at apex, theouter margin wi,th more than a score of long setae that are angularly bent
before the krng-producedtips; base of style on outer margin with a rounded
iobe provided rvith about sixteen or seventeen strong s'pinoussetae.
Hol.otype, 6 , IJrundi : Bururi, 2.000meters, March 5-12,1953(P. BesIr,EwsKy). Allotopotype, g. ParatopotApe,6.
This large and conspicuousfly i.s most similar to Ti.pu,la(Acutipula)
alpluaspisSpusen and a group of allied forms in Tropical Africa, differingin the pattern of the wing and the structure of the male hypopygium.
LIMONIINAELIIUIOT{I IN I
Limonia (Metalimnobia) oligotricha,sp. n.
Mesonotal praescutum obsctrreyellorv with four brown stripes; scutal
lobes conspicuouslyblackenedon mesal margin; scutellum greenish yellow
narrowly darkened medially; mediotergite brownish black with a yellow
triangular area on cephalichalf; temora yellow, with four dark ,brown rings,
the outermostsubterminal;wings pale yellow, conspicuouslypatterned withdark areas and pale brown clouds; sparsemacrotrichia in stigmal area andin ou,termostwing cells; male hypopygium with the rostral prolongation of
the ventral dististyle elongate,narrowed to an acute p.oint,the rostral spines
trom long basal tubercles; aedeagusvery broad.
Male. Length about 9.5-10mm.; wing I l-l1.5 mm.
Femule. Length about 12 mm.; wing l0 mm.
Rostrum and palpi black. Antjennaeblack, the scapeand base of pedicel
yellow; proximal flagellar segmentsshort and crowded,with short verticils,
more
the cluter segmentselongate,the verticils very long and cons'picuous,than one-half longer than the segments.Head brownish gray; anterior vertex moderately wide, approximately equal to the greatest diameter of thescape.
Pronotum brown medially, the lateral borders narrowly yellow. Mesonotal praescutumobscureyellow, with four ,brown stripes, the intermediatepair narrow, the lateral stripesbroad,reachingthe margin; central interspacebroad; scutuln testaceousmedially, the lobes obscurebrownish yellow, their277

mesal edge broadly blackened, the outer part of disk more narrowly so;
scutellum greenish yellow, narrorvly darkened medially, the parascutellamore obscure; mediotergite brou'nish black wi,th an elongate central yeilow
triangle on anterior half, the point directed backward; posterior portion of
tnediotergite paling to obscure yellow. Pleura brownish yellow, patterned
vertically with darker on anterior ,border o[ mesepisternumand on the pteropleurite; ventral sternopleurite weakly darkened. Halteres with stem
brownish vellow, the extreme base clearer, knob infuscated, with greenish
tints. Legs 'r;r'iththe coxae weakly infuscated; trochanters yellow; femora
5'ellow, with four uarrow dark brown rings, the outermost subterminal, thel:asal ring subobsolete;tibia Szellowbasally. Wings (fig. I l) with the groundcolor pale 5rellow,conspicuouslypatterned urith dark and paler brown, thedarkest pattern chiefly on anterior half of wing, r,vith four areas in cell R,
the third at origin of Rs, the fourth at the fork; narrow and less distinct
dark seamsover the remainder of cord and outer end of cell /sf lly'";remainder of wing rvith extensivepaler brown washesand clouds, chiefly involving
the perioheral cells, M being most nearly free from pattern; veins brown.
Sparsemocrotrichia in stigmal region and in outer ends of cells Sc, ,to2nd Mr,
inclusive (shown in figure by stippling). Venation : Sc1 ending about opposite midlength of Rs, Sc, near its tip; secondsection of vein Rr -r, strongly
arched bevorrdorigin: m-cu a short distance before fork of M.
Abdominal tergites obscure brownish yellow, darker on posterior borders and less evidently so on sides; sternites clear yellow, weakly darkened
posteriorl5r; hypopygium brownish yellow. Ovipositor with the cerci relatively slender gently upcurved. Maie hypopygium (fig. 13) with the tergite,
9f. 'transverse,the caudal border slightly produced on either side of the
midline. Basistyle, lt, relatively small. Dorsal dististyle, d, strongly curved.
Ventral dististyle very small, its total area about three-fifths that of thebasistyle;rostral prolongation slender,narrowed to an acute point, with twostrong spines from lengthened basal tubercles, these placed near base ofp::olongationon the upper and lower margin. Gonapophysis,g, with thenresal-apicallobe terminating in an acute darkened point. Aedeagus,a, verybroad.
Holotype, 6 , Parc National Albert, Belgian Congo, Gitebe, volcan Nyam u r a g i r a ,2 .3 2 4me te rs, Ju n e 14- 26,1935( nr W r r - r E) ; No 1514.AllotApe, 9,Nambwanrba valley, Rurvenzori Range, LTganda,6.500 feet, December 1934January I935 (Enwenns);British Museum (Natural History) . Paratopotypes,
2 d 6 , ( o n ' W r r r r , N " l S l l ) . P a r a t y p e s ,I 6 , w i t h t h e a l l o t y p e ; t 6 , K a l i n z uForest, southu'est Uganda, January 1935(T. H. E. Jacnson-); British Museum(Natural History), with further specimensin Museum under EnwennsNo 69;
I g , B u ru ri , U ru n d i , B e l g i a n Congo, 1.800- 2.000
m eter s, Mar ch 5- 12, 19 53(P. Beslr,rwsrv).
The present fly is closest to Limonia (Metalimnobia) trichoptera AnxexIxR and some others, readily distinguished by the pattern of the body andwings, the nature of the wing trichiation, and the structure of the malehypopygium278

Limonia (Rhipidia)r near femorasetosa At'nxelntR

Arnxexunn; Ruwenzori Expedition 1934-l'r,
Li.moni,a,(Rhi.pi.d.i.a)femorasetosct.
Diptera, Tipulidae (in Press).
One broken female, presumably of this species.Urundi : Bururi, 1.8002.000meters, March 5-12, 1953(P. Bestlnwsxv)'
Limonia (Rhipidia) sigilloidesrsP. n'mesonotal praesctttum with three br'own stripes; pleura
Allied to si,gi,tta;
hrownish gray, with two narrow dark brown longitudinal lines; antenna
yellow;rvith flagel'lum brownish black, segments ten to thinteen, inclusive,
legs yellow, femora unpatterned; wings yellowed, with an abundant dotted
p"1t..n; male hypopygium with the tergite transverse, the posterior border.orr,r.*; ventral dististyle wlth five rostral spines placed before midlengthof the prolongation.
Male. Length about 7 mm.; wing 7'8 mm'
peRostrum and palpi black. Antennae (male) subpectinate;scape andclicel black; proximal seven flagellar segments brownish black, the abrupt
apical pedicelsyellow, succeedingfour segments (ten to thirteen inclusive)asuniformly yellow, the long terminal segment black, nearly twice as longthe penult,imate; first flagellar segment subserrate, the second less strongly
grayso, the r,emaindergraclually smaller, with shorter pedicels. Head darkanterior vertex narrow, about one-half the diameter of the scape'Mesonotal praescutum chiefly coverecl by three broad brown stripes,
the humeri and lateral borders yellow pollinose; scutal lobes dark brown,
the central area, with the posterior sclerites,heavily gray pruinose' Pleura
brownish gray, with two narrow dark brown stripes, the more dorsal one
passing beneath the root of the halteres, the ventral stripe including theyelbases of the coaxe and the ventral sternopleurite.Halteres short, stem
for thelow, knob wea.kly infuscated. Legs with the coxae yeilow except
yellow,
darkenecl ba-qes,as rJescribed;trochanters yellow; remainder of legs
withthe femora without darkened pattern; tarsal segments broken. wings
pattern
the ground pale yellowish graY, with a very abundant gray dotted
betweenand. a few sma.ll darker brorrrn areas, including one at middistanceat forkone
arculus and origin of /ls, another at this origin, and a separate
cordof Sc; a very small stigmal area at fork of R,; darkened areas along
gray dots insmall, only a little more conspicuous than the very numerous
endingthe cells; veins yellorv, darker in the brown spots. Venation: Sc,
ceII
about opposite one-fourth the length of Rs, Sc, near its tip, subequal;
tst M, subequal to distal section of vein M, +zi m-cu about three-fourt'hs
its length before fork of M.
Abdomen, inclucling hypopygium, brown, the pleural membrane darker
borderbrown. Male hypopygium with the tergite transverse, the caudal
about
convex, with " ,r..y slight to scarcely indicated median emargination;
darkfifteen strong setae on either side. Basistyle with the ventromesal lobe

27\l

ened, with a low accessory lobule near its base. Dorsal dististyle a strong
gently curved rod, a little expanded before the straight terminal spine. Ventral disListyle fleshy, its area about two and one-half times that of the basistyle; rostral prolongation relatively long, with five spines in a compact
group on basal half of outer margin. Gonapophysis with mesal-apical lobe
blackened, gently curved to the subacute tip. Aedeagus terminating in t'*'oshort tubu'lar points.
H o l otyp e , 6 , R u a n d a : co ntr ef. Est Muhavur a, 2.100meter s Januar y 2g,
1 9 5 3( P . Be srtw srv).
Very closely allied Io Limoni,a (Rhipidia) sigitla ALnxexunn, of Uganda,
which has apDroximately the same antennal structure and pattern, differing
in details of struc'ture of the male hypopygium, particularly the rostrum andits spines.In sigillo there are four spines placed far out on the prolongation.
HEX ATOMINI
Limnophila (Afrolimnophila) urundiana, sp. n.
Allied to di'chroica; general coloration of thorax ,brownish black; femora
black, the fore pair with about the proximal third yellow; tibiae and basitarsi yellowish brown; wings with a strong brownish yellow tinge, restrictedly patterned with darker brown, including a narrow band at cord; malehypopygium u'ith the outer dististyle a simple rod, inner dististyle untoothed.
Male. Length about 8-8,5mm.; wing 9-9.8mm.; antenna about 2.2-2.4mm.
Rostrum and palpi black. Antennae black throughout; basal five flagellar segments with the lower face protuberant, densely pu,bescent,without
verticils; succeeding segments with strong ventral verticils, additional to theothers; terminal segment a little longer than the penultimate. Head brownish
black.
Thorax dull brownish black, the posterior sclerites of notum still darker.
Halteres dark brown. Legs with ,the coxae dark brown; trochanters yellow;
fore femora black with about the proximal third yel,low, remaining femora
black; tibiae and basitarsi yellow, the tips narrowly blackened; remainderof tarsi black. Wings (fig. 12) with a strong brownish yellow suffusion, restrictedly patterned rvith darker brown; a narrow band at cor.d,widest in the
costal region, very narrow behind; further darkenings beyond cord include
marginal sprrts at ends of ali longitudinal veins, excep,tiilg E;, the outerend of cell lst M, and fork of Mr*zi basad of cord with a spot at originof Rs and two others in transversealignmenton vein lst A and tip of.2nrl A;
prearcular field and a large postarcular cloud in cells ,R and M slightly paler
brown; veins dark yellow, brown in the clouded areas. Venation : Sc, ending
distinctly beyond fork of Rs, Sc2 near its tip; cell R, short-petiolate; cell M1
a little longer than its petiole; m-cu at or b.eyond midlength of cell Ist M2.
Abdomen black, the hypopygium yellow. Male hypopygium (fis. 14)
having the general conformation of the subgenotype, d,i.chroica,differing inimportant details. Outer dististyle, d a little stouter, simple; inner style mas280

sive, withoui the conspicuous lateral tooth on outer margin. Central areaof tergite, 9t, a little produced, densely setulose, with small pale scatteredsetae, lateral of which with long blackened bristles.
H o l o tE p e , 6 , U ru n d i : B ur ur i, 1.80G2.000m eter s, Mar ch 5- 12, 191 'r 3
(P. Besrnwsxv) . Paratopotype. ,J.
The most similar species is Limnophila t(Afrolinmophila) dichroica
Ar,nxeNorR,of Uganda, which differs especially in hypopygial charactersand in the details of coloration. In dichroica Lhereis a conspicuousdifferencein coloration of the thor:ax and wings in the two sexes and it is possiblethat a similar dichroism wi,ll be found to occur in the present fly.

E RIOPTERIN I
Gymnastes (Gymnastes) teucholaboides (Ar.nxlNorn)
Paratropeza (GErnnastes)teucholaboides Alrxexnnn; Ann. Mag. Nat. Hist.,( 9 ) 5 : 3 1 G3 4 7 ;1 9 2 0 .
Ruanda: Rutovu, for6t du Rugege, 2.350 meters, January 2'0-23,1953(P. Besrrrwsnv).
Urundi: Bururi, 1.80G2.000
meters, March 5-12, 1953 (P. Besrlawsxv).
Widely distributed in East Africa, as far south as Southern Rhodesia.
Toxorhina (Ceratocheilus) seychellarum subimmaculata,subsp. n.
Ceratocheilus seychellaru,m Enwenns; Trans. Linn. Soc. London, 2, Zool.,
15 : 203-204;1912.
Mal.e.Length, excluding rostrum, about 5.5 mm.; wing 5.9 mm.; rostrum
about 3.5 mm.
Rostrum dark brown, exceeding one-half the length of the wing. Antennae black throughout. Head gray, more infuscated on center of posteriorvertex; corniculus distinct, widened distally.
Pronotum dark brown. Mesonotal praescutum gray with three brown
stripes, the lateral praescutal borders brownish yellow; posterior sclerites
of notum gray, the scutal lobes variegated with brovi'n. Pleura dark brown.
Halteres yellow. Legs wjth the coxae and trochanters obscure yellow; remainder of legs brown. Wings grayish yellow, the prearcular and costal
fields clearer yell:w; a slightly indicated dark brown pattern, indicated as adarkening of the veins, including the base of the anterior branch of Rs, thecord and outer end of cell 1sl Mt; very small and faint brown spots at ends
of veins .Roto Czr, inclusive; remaining veins yellow. Venation: Sc short,-(cr ending just ,beyond origin of .Rs,Sc2 only a short di,stancefrom its tip,
Sct alone abottt one-third to one-half longer than Rs; Rs short, a little morethan one-third its anterior branch; cell lst M, closed; n1.-cujust beyond forkof M.
Abdomen, including hypopygium, dark brown. Male hypopygium (fig.
15) with the basistyle, b, stout, with a row of strong setae on mesal face.
281

Outer dististyle, d, slender, strongly curved; inner dististyte larger, appearing as a pale flattened blade, with a strong retrorse spur on outer marginnear base.Arms of aedeagUsrelatively slrort.
Holntype, I , U.rundi : Bururi, l.8O{L2.000meters, March 5-12, l95E
(P. Besnurvsnv)
Close'to the typical form (SeychellesIslands) but larger, w'ith proportionately shorter rostrum, and with slight colorational differenees. (Typicalseychellnrum.,Length 5 mm.; wing 4 mm.; rostrum 4 mm.).

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