' g45

Sonderdru*, aus: Bonn. zool. Beitr. 2lz t4,148(1970)

An undeseribed species of Orimarga from Igrael(Tipulidae: Diptera)by CHATRLES,P.
ALEXAIIDER
Amtrerst, Massadr,usetts,USA

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145

An undescribed speeiesof Orimarga from Israel(Tipulidae: Diptera)by CHARLES P. ALEXAND'ER
Amherst, Massachusetts,
USA
During the summer of 1968Dr. Saul I. Frommer, with Mrs. Suzy Frommer, travelle,din Israel and there collected two interesting speci,esof craneflies in the oasis of Ein Ge,di.One of these is an undescribed 'memb,erof
the genu.sOrimargo Osten Sackenthat is 'discusse'dat this time. D,atesinparenthesesthroughout the text refer to the list of rEferencescite,dat thecornclusionof the paper.
Orimarga (Orimarga) Irommeri sp. n.
Size me,dium(wing of male to about 6 mm); mesothorax yellowed, trhenotum patterned with brown; wings very slightly infuscate,d,,untrnarked;
veins Rr+z itlrd Rz subequal, basal section of Rr*s long, subequal to theouter section, r-m and Re virtually in transverse alignment, cell M3 subequal to Mr+a; Irldle hypopy,gium witlh a setiferous lobe on mesal face o{basistyle; phallosome with gonapophysesappearing as stout blrades,outerend of basal ste,mwith a row of strong setae,the outer extendedlobe withmore delicatescatteredsetae.
Male. - Length about 7.5mm; wing 5 about 0.9- 1.0 mm.

6 mm; dntenna

Described from alcoholic specimens. Rostrum l'ight yellow, palpi blad<.
Antennae with sc'ape'brown, remaining segments black; flagellar segments
oval. Head dark gray pruinose.
Pronotum yellow. Mesonotal praescutu,m with disk covenerd by fourconfluent light brown stripes, the interme'diate pair separated by'ucap,illrary
paler vitta that is continued caudad almost to the abdomen; sid,es of pr,aescutum and scutum narrowly yellowed. Parascutella, pleurotergite andpleura yellow. Ftraltereswith stem light yellow, knob slightly darkened.
Legs with coxae and trochanters yellow; a ;single detached le,g remains in
the vial, tight brown, tips of 'femora vaguely more darkened. Wings (fi9. 1)very weakly infusc,ated,,unpatterned, prearcular anrd costal fi,elds slightly
more yellowed, including the prearcular veins, remaining veiurs lightbrown. Longitu,dinal veins beyond corrd with abund,ant trichia, inclu,dingalso the outer end of ve'in M. Venation: Rr+g and Rr subequ,al;basal s'ectionof Rr * s lon'g, subegudl to outer section i r-In virtually in transverse aliguni0

r46

C h .P . A l e x a n d e rBonn,zool. Beitr.

ment with Rr, itr cases slightly before or beyond; r-m posteriorly connecting with M1*2; cell M3 subequal in length to Mr+ai ITI-cu about oppos,ite
mridlength of Rs. One wing of a paratype shows a peculiar de,formation,having ve,ins M and Cu fused into a stout cornmon element for about theirbasal third.
Abdominal ter,gites and hypopygium li,ght brown, sternites yellow.
Male hypopygium (fig. 2) with basistyle, b, bearing a conspicuous lobe atbase of mesal fac'e, its o,uter margin with dense very long yellow setae.
Dististyl'es, d, shortly united basally, outer style a slen'der gently curvedbl'ade that narrows very gra'dually into a needlelike spine; inner stylesligtthtlylonger, narro,w,e'dat outer end, ,apex shallowly emarginate. Phallosome, p, with aedeagus, c, terminating in two 'needlelike points; gonapopitryses, g, appearing as s,tout blades, outer end of their basal section
sli,Ehtly wi'dened and with a row of ,stron,g s,et,as,the more mesal ones
stouter, beyond them the bl'a,deextenrdedinto an oval lobe that is provide'dwitth scattered long setae.
H o l o t y pe , a l co h o l i c d , E i n Gedi, Isnael, July 31, 1968 ( Saul and Suz y"underFromrmer),waterfalls flying about moss covered rocks in dimly lit
a r e a ". P a r ato p o typ e s, 4 ,a l co ,holicd 6. tn natur e associated with Lim on i a(Geranomyia) annandalei (Edwards), as rdisc'ussedlater in this paper.
I take pleasure in naming this interesting crane fly for the collector,
Dr, Saul I. Frommer, Curator of the Insect Collections of the Universityof Californi,a, Rivers'i,de, where the type of the species is deposited.
Dr. Frommer is a student of the Nematocerous Diptera, particularly theTipulirda€ err,dChironomidae. Attention is directed to his important studyo n t h e r e p r o d u cti ve syste ms i n the Tipuli,dae ( Fr omm er , 1963) .
There ar,e approximately seven species of Orimarga in the western
Palaearctic regio'n, almost all being from northern and central Europe, one
occurring in northern Africa. The most comprehensive treatment of th.ese
species is by Tjeder (1958) who ,discussesin detail the three species fromSw,eden define'd in 1851 by Zetterstedt, Orimarga alpina, O. juvenilis, andO. virgo, providing excellent figures of all of these, based on lectotype
specimens. T,he e.arlier Orimarga attenuata (Walker, 1848) 'had been consider,e'dby Edwards (1938) to be the prior name for O. alpina b,ut this isquestioned by Tjeder anrd the m;atter must be hel,d in'doubt. It may ben o t e d t h a t V a i l l a n t (1 9 5 0 : 4 6 ) states that in attenuata vein Ms*r of thewin'gs is unrforked, leaving only two outer brandres of M to produce thecondition found in the subgenus Diotrepha Osten Sacken, of the New
World. This statement is incorrect since attenuato'h.as three brandres toMe'dia as in all other known members of the typical subgenus. Orimarga
virgo differs from all other species in its venation, having r-m connecting
posteriorly with the main stem of M befor'e the fork, the other species

HeIt l/2
2t / t97C

New species of Orimarga (Tipulidae)

147

with th'itscrossvein beyon'd the fork, connecting with vein M1*2,as shownfor tiheprersentfly (fig. 1).
Orimarga anomala Mik (1883)was placed in the synony,my o,f O. virgo
by Kert6sz but this assigtnmentis questionableand the matter should be
re-studied.Orimarga hygropetricaVaillant (1950)is larger than the present
fly (length 9 to 11 mm) and h,asthe venational ,details distinct, including
the more basal pos,ition of.m-cu and the short arcu,atedrbasalsection ofRr*s. This interesting fly was ,discoveredin the vicinity of Grenoble,

Wi lsIr\\Orimarga (Orimarga) Irommeri sp. n. Fig. 1. Venation
Fig.2. Male hypopygium(Symbols: Venation: M - Media; R - Radius; Sc -Subcosta.
Male hypopygium: c, aedeagus;b, basistyle; d, dististyle; g, gonapophysis).

France, where the life'history was sturdied by Vaillrant an'd ttre early stages
described and figured. It is of interest to note that the early stages of thisspecies occur in hygropetric lhabitats and contra'st with the sarne stagesof the type specie'sof the second subgenrus,Orimarga (Diotrepha) mirqbilis(Osten Sacken) which are found in decaying wood, as described by Rogers(re27l.
Orimarga stenoptero (S6guy, 1936), described from Algeria, originally
was assigned to tjhe genus Gonomyia but u,nquestionably is a species ofOrimarga. It differs from tihe present fly in the unusually long ab,dornen
and narrow wings, with vein Rz+r short, sub.equal to Rz or to the b,asal
section of Rr+5, €rn'dwith cell Mg de,ep,veins Ms anrdl.{r being two or moreti,mes vein Ms*r. It may'be noted that SeEuy's figure of the type rfem'aleof
this species is incorrect in the number o.f antennal seEmentrswhidr are!0.

t48

C h .P . A l e x a n d e rBonn.
zool.Beitr

shown as being in excess of. 20 whereas both Orimarga and Gonomyia
have the normal number of 16 segments.
The north European species differ conspicuously from the present fly
in b'eing larger (wing comm,only7 mrmor more) an'd,dark in color, with theexception of Orimarga juvenilis which is most similar in size, ven,ationand coloration but ,differs evi,dently in ,hypo'pygialstructure (Tjeder, 1958,p. 165,fiEs. 31-34).
Associated with the present fly at Ein Gedi was Limonia (Geranomyia)
annandalei (Edwards), as mentioned earlier. The type of this species wasfro'm Isra.el, havi,ng been collecte'd by Dr. Thomas Nelson Annandrale inl9l2 on the Plain of Gennesaret, near Lake Tiberias, where it was foun'don lime stone cliff,s overhanging a spring. The Frommer material includes
one male and one female, the latter much sm,aller,both speci'mens:h,aving
been returne'd to the collector. Edwar'ds'statement that the maxillary palpi
inste'ad of having two se,gmentsas norm,al for theare one-seg"Tnente,d,subgenus, app,e,arsto be confirmed by the present m,a,terial's.It mray benote,d that the mal,e hypopygium appears to h,ave a single rsp'ineor perh'aps
two very closely approxi,matedspine,son the rostral prolongation o,f theventral 'dististyle.
Relerences Cited
C.P. (1965):New or little-known Tipulidae from EasternAsia,
Alexander,Philippine Jour. Sci., 94, p. 397-434, 5 pls (with 48 figs.), published
LVII.
1966.
F . W . ( 1 9 1 3 )T: i p u l i d a ea n d Culicidae from the Lake of Tiberias andEdwards,
D a m a s c u s .- J o u r . a n d P r o c . A s i a t i c S o c i e t y o f B e n g a l ( N e w S e r i e s ) , 9 , n o . l ,p.47-51.
- (1938): British short-palped craneflies. Taxonomy of adults.
Trans. Soc.
British Entomology,5, Part 1, p. 1-168,32 text-figs. (with numerous sub-figs.),
5 plates (with 103 wing figs).
S . I . ( 1 9 6 3 ) : G r o s s m o r p h o l o g i c a ls t u d i e s o f t h e r e p r o d u c t i v es y s t e m
Frommer,
in representative North American crane flies (Diptera: Tipulidae). Univ. Kansas
Science Bull., 44, no.12, p.535-626.
Wien. Ent. Zeitung, 2, p.2Ol.
M i k , J . ( 1 8 8 3 )-: - - .
J . S . ( 1 9 2 7 ) :N o t e s o n t h e l i f e h i s t o r y , d i s t r i b u t i o n a n d e c o l o g y o f D i o Rogers,trepha mirabilis Osten Sadren. Ann. Ent. Soc. America, 20: 23-36, I plate (with9 figs., larva, pupa).
S6guy,E . ( 1 9 3 6 ) :U n G o n o m y i a n o u v e a u d ' A l g 6 r i e ( D i p t . L i m o n i i d a e ) . B u l l S o c .
Ent. France, 1936 (December 23), p. 334-335.
T j e d e r , B . ( 1 9 5 8 ) :A s y n o p s i s o f t h e S w e d i s h T i p u l i d a e . I . S u b f a m . L i m o n i i n a e :Tribe Limoniini. - Opuscula Entomologica, 23, p. 133-169.
F. (1950): Sur Orimarga hygropetricc n.sp. (Diptere Limnobiidae
Vaillant,
Trav.
Laboratoire d'Hydrobiologie et de Pisciculture de Grenoble,
Heliini).
p.43-47.
1949-1950,