Reprintetl from Bur,r,nuN oF TrrE Bnoor<r,vu ENToLro{,ocrcAr,Socrntv,Yol. XXIV, No. 3, pp. 187-191. June 1929.

UNDE S CRI B ED
SP EC IES O F T H E GE N U S LIMN OPHILA FROM EASTERN NORTH AMERICA.
(Tipulidae, Diptera).
Penr IV.'
By Cnenr-ns P. Ar-oxaNocn, Amherst, Mass.1
The species of Limnophiio discussed at this time are based
chiefly on collections made by the writer in New York and New
Ii,ngland. Additional material was collected by my friends,Messrs. Notman, Rogers and Walley, to whom I express mysincere thanks for this opportunity of studying the containednovelties.
Limnophcla Macquart
Prolimnophila n. subgen.
Antennae with the verticils elongate, much exceeding thesegments. Head not narrowed behind. Tuberculate pits
vestigial, placed on the extreme cephalic margin of thepraescutum. Pseudosutural foveae inconspicuous. Wings
with the anterior arculus lacking or barely evident; Rr*r*n inalignment with Rs and nearly equalling it in length; Rr*,
angulated at origin; cell rs/ M, very elongate, its inner end
strongly arcuated and lying proximad of the other elementsof the cord; m-ctt,beyond midlength of the cell.
Type of subgenus.-Lim,noph,ila areolata Osten Sacken (Nearctic Region).
Limnophila areolata is a cornmon crane-fly in Northeastern
North America, being especially characteristic of hemlock-yellow birch forests in June. The character of a broken arculus
reminds one strongly of Psewd,olim,nophilaand it may be that thepresent group is more correctly placed with that genus. The
most conspicuousvenational feature is the very large, arcuatedcell rst MyLim,nopkila (Prionolabis) walleyi n. sp.
Male.-Length 6.5-7.5 mm.; wing 7-8 mm.
In its small size and general appearance, resembling l.
l Contribution from the Department of Entomology, MassachusettsAgricultural College.

188 Bulletin of the Brooklgn EntomologicalSociety vot.xxlv

June,7ezeBu,lletin of the Brooklyn Entomological Societg 189(P.) si,rnpler Alexander, but in the structure of the malehypopygium more like L. (P.) rwfibasis Osten Sacken.

lowish. Legs yellow, the femoral and tibial tips narrowly
darkenecl; tarsi chiefly black, the proximal ends of thebasitarsi obscure yellora'. Wings uniformly pale yellow, thestigmal region only slightly darker; veins still darker yellow.
Venation: Rs angulated at origin; cell M, shorter than or
subequalto its petiole; nx-cllat near midlength of cell rst Mr.
Abdornen ferruginous yellow, in the male the subterminal
segmentsblackened to produce a conspicuous ring; hypopygium ferruginous. In the female, the abdomen is more uniform in color. Male hypopygium generally as in noveanglicein the setiferous median lobe on the caudal margin of
the tergite and the general structure of the dististyles, differing very notably in the structure of the aedeagusand gonapophyses. Aedeagus a large, highly compressedblade, muchas in platyphallws Alexander and others, the gonapophyses
correspondingly elongated. In noate-anqlice,the aedeagusis
almost linear, showing only the beginnings of compression
on the distal half ; gonapophyses relatively small, hooklike.

Mesonotal praescutum without dark stripes, the color being blackish, dusted with yellowish gray. Femora yellow, thetips narrowly but distinctly infuscated; tibiae yellow, thetips narrowly blackened; tarsi brown, the tips of the segments darker, the outer segments uniformly blackened. Inthe paratype, the femoral tips are more gradually darkened.
Wings with a grayish yellow ground-color; stigma small but
well-defined; seams along the cord and outer end of cell
tst M, narrow and inconspicuous; no heavy brown seamalong vein Cw in cell M. Male hypopygium with the outerdististyle only weakly pectinate, the teeth small and variable.
Inner dististyle bifid, the caudal or outer arm broader, densely
set with microscopicappressedblack teeth; cephalic or innerarm narrower, blackened, with a few weak erect setae.
Gonapophysesappearing as flattened blades that are slightly
dilated beyond midlength, the apex narrowed and produced
into a long spine.
The right wing of the paratype has a weak adventitious crossvein in cell R, just distad of vein Rr.
Habitat : Northeastern North America.
Holotype: J, Brookview, RensselaerCo., New York, June r5,rgz3, (Alerand,er). Paratyper.'d, Bothwell, Ontario, May 23,
1925, (G. S. Walley). Type in the author's collection; paratypein the Canadian National Collection.
This interesting Lirnnophila is named in honor of Mr. G. S.
Walley, who has added greatly to our knowledge of the Tipulidae
of Ontario and Quebec.
Limnophila (Phylid.orea) siouana n. sp.
Male.-Length about 6-6.5 mm.; wing 5.8-6.5 mm.
Fem,ale.-Length about 6.5 mm.; wing aboat 6.7 mm.
Closely allied and generally similar to L. (P.) noae-anglie
Alexander, differing especially in the structure of the malehypopygium.
Antennae (J) elongate, as in noae-anglie, if bent backward extending to opposite or beyond the base of the abdomen; scape obscure yellow; flagellum dark brown, thebases of the proximal segments narrowly pale. Head lightgray, the occipital region more yellowish. Mesonotum shiny
ferruginous, without distinct markings, the pleura more yel-Habitat: Iowa.
Holotype: qf, Grinnell, Poweshiek Co., May 28, ryzo (J. S.
Rogers) ; Collector'sNo. 38. Allotopotype, t; Collector's No. 4o.
Paratopotypes, 3 9, with the type. Specimens in the Alexanderand Rogers Collections.
Limnophila siouana has been standing in my coliection as Z.
novce-anglie Alexander, to which it bears a notable general resemblance,differing conspicuouslyin the phallosomic structures.
Lintnophila (Epheli.a) sabrina n. sp.
about 5. 5 m m . ; wing 5. 6xr . 7 t o 6. 8x r . 8^MFem,ale.-Length. ale. - Lengt habout 6.5 mm.; wing 2.5 x r.8 mm.
Rostrum and palpi brownish black. Antennae relatively
elongate, especially in the male, where, if bent backward, itextends some distance beyond the wing-base; scapal segments
black, the flagellar segments dark brown; all flagellar segments elongate, the basai three or four more enlarged.
Praescutum yellowish gray, with three poorly-indicatedbrown stripes, the median stripe weakly divided. Legs withthe femoral tips conspicuouslyblackened; bases and lips oftibiae narrowly blackened. Wings narrow in both sexes, as
shown by the above measurements, the entire central thirdof the wing being of approximate equal width; wing-patternrelatively sparse,about as in aprili,na, with the last dark cloudat the end of vein end A.

190 Bu,llctin of th"e Rrook|yn lNntomologico,lSociety vol.XXIV
Abdominal segments obscure brownish yellow, the caudal
margins broadly dark brown, the lateral margins more narrowly so; outer segmentsmore uniformly darkened. Male
hypopygium generally as in aprilino, the outer dististyle witha large lateral flange on the basal half; spinulae of the style
relatively weak, the apical spine small. Inner dististylerather conspicuously widened, without a setiferous tubercle
as in irene. Outer apical angle of the basistyle not produced
and provided with long yellow setae as is the case in irene.

June,792s Bulletin of the Brooklyn Entomological, Bocietg

II

Habitqt: Northeastern North America.
Holotype:6f, Stowe, Lamoille Co., Vermont, June 29, rg27
(Alerander). Allotopotype, 9, Jwe t4, 1927. Paratopotypes,
5 d ?, with the allotype ; paratypes, sf, Amherst, Massachusetts,
June 5, ry24 (Aleronder); qf, Keene Valley, Essex Co., NewYork, May 26, rg2o (H. Notman). Types in the author's collection.
Allied to L. (8.) aprilina Osten Sacken and L. (E.) irene
Alexander, differing especially in the more elongate antennae inboth sexes. Frcm aprilino, it differs furthermore in the narrowwings of both sexes and the uniformly darkened antennae, agreeing in the general structure of the male hypopygium. Fromirene, it differs in the elongate antennae and structure of the malehypopygium, agreeing in the narrow wings of both sexes.
Lim.nophila (Dicranophragm,a) angustula n. sp.
Male.-Length about 4.5-5.5 mm.; wing 4.8 x r.6 to 7 xz.z
mm.
Female.-Length about 5-6 mm.; 5-6 mm.
Allied and generally similar to L. (D.) fwscovaria Osten
Sacken, differing especially in the, narrow wings of bothsexes. In fwscoaario, the wings of the male are unusuallybroad, widest opposite the level of the termination of veinend A. In angustul@,in both sexes, the wings are more
uniformly narrowed, being only slightly wider opposite theanal vein than elsewhere along the middle third of the wing,
the condition being about as in the females of fuscoaaria.
Habitat: Northeastern North America.
Holotype:6/, Amherst, Massachusetts, altitude 275 feet, July25, rgzS (Alerander). Allotopotype, l, July rS, rg28 (Alerander). Paratopotypes, rS & J; paratypes, d ?, Orono, Maine.
July 8, t94 (Alexander); Mt. Desert, Maine, August 2g-Sep-Il

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191

tember r, 1926 (Alerander); Woodworth's Lake, Fulton Co.,New York, July Z, 1916 (Alerander) ; Cincinnatus, New York,
July zo, 1916 (Alerander); Ithaca, New York, August 12, rgro
(Alerander). Typ. in the Alexander Collection.
This species has been confused in collections with fwscoaaria.
The latter species is especially characteristic of Canadian woodland conditions (yellow birch and beech, with hemlock) in Juneand early July.
L. angwstula is a summer species,on the wingfrom early July into September. Mr. Edwards has collected specimens of this species while in America in t9z8 and considers
the speciesto be distinct.