Tue CrRANE-FLIES oF New YorK — Part I 905 
known are spent in wet earth or sand, and the larvae are of the usual 
elongate type of the Eriopterini. 
The local species of Gonomyia may be separated according to the 
following key: 
1. Two branches of the radial sector reaching the wing margin. (Subgenus Leiponeura 
SURES) oo 55 oid is Sb oes Ne ee UU eRee va ees Sun Giemsa av ta te Riad a Um Pa 2 
Three branches of the radial sector reaching the wing margin.) Subgenus Gonomyia 
IMIGEES)) 5-5 9:05.01 oh eae apes CACORE TORE or TEEN IIE rap RET eis setae ena Pe natant ER oa 4 
2. Outer deflection of vein M; absent, the cell /st M2 being open; costa conspicuously china- 
white; legs banded with white. [EHlliptera alexanderi Johns. Psyche, vol. 19, p. 3, 
fron oe OTe (late 2XeXENOV LS 86.) os soci icsscee clea cre eerocieies G. alexanderi (Johns.) 
Outer deflection of vein M; present, closing the cell 1st M2; costa not china-white; legs 
HOM aN dedmwilbMawiN1 be sae cnes candy cers cat shee es oreo os tne SAS SiMe ce BEE Sr 3 
3. Pleural stripes conspicuous; stigma of the wings distinct; femora tipped with dark brown. 
[Proc. Acad. Nat. Sci. Phila., p. 587-588; pl. 27, fig. 25, wing; pl. 26, fig. 21, hypopygium. 
AA] ee (ral abe PNEXEXGVIDNS 7.) 02 PS he ena eda cee ao cee ee G. sacandaga Alex. 
Pleural stripes lacking; no stigmal spot on the wings; femora not tipped with brown. 
[Goniomyia manca O. S. Mon. Dipt. N. Amer., part 4, p. 178-179. 1869.] (Plate 
2OKOI NYS SS) 5 sob aE aS COON ABNER CRE Re corer Ne gs ce eee Reo nate G. manca (O. S.) 
4, Basal deflection of Cm far before the fork of M; subcosta long, ending beyond the origin 
OE HLS GEGIOP Ss 6 dg  RvSRee tse eer EO see eR erate ite Ee ones ae eR eR URS 5 
Basal deflection of Cu, at or beyond the fork of M; subcosta short, ending opposite or 
DElOLeRuheLoniginkoteuhe SeCbO ss. sve sees easeeo aes oe seo ee ee ee ae 6 
5. Wings clear, unspotted. [Ent. News, vol. 26, p. 170-172, figs. 1-3. 1915.] (Plate 
OREN, BOL) cep ichio SAS RS IO te a Pa me TD aa BP oe ine ae ae G. mathesoni Alex. 
Wings spotted. [Proc. Acad. Nat. Sci. Phila., p. 231, pl. 4, fig. 16. 1859.] (Plate XXXVI, 
OU con 6.5.68 06° 6.0 055 CE RTE CCA RE SRO SU nn rts Soret Snr Pam Ae Cen G. blanda O. S. 
6. Antennae orange at the base, the flagellum dark.............0....00.50...2.000000-- of 
ANGE |0) Excl HATEEO TRS Oo wy eerste ec sec teciiel Gt etaee Cer SAP IE OUCCe  riey rey Om con ie Pn Ra 9 
7. Cell 1st Mz closed; femora with a dark brown subterminal ring. [Proc. Acad. Nat. Sci. 
BhilasapeZ2oO mel So 9%) (Rlate XeXexXevil ONE) eee sen G. sulphurella O. S. 
Cell 1st M2 open; femora without a dark subterminal ring........................... 8 
8. Male hypopygium with the dorsal angle of the pleurite stout, with numerous (about 15) 
slender hairs; ventral appendage simple, stout, tipped with a blunt black spine; second 
appendage a powerful, curved, subchitinized arm directed proximad. [Can. Ent., 
VOASpaolG=old. 1916) (Plate "XexOeVil 92). oo hoes. ena. oe ee G. florens Alex. 
Male hypopygium with the dorsal angle of the pleurite slender, with a few (about 10) 
stout hairs; ventral appendage bifid, the arm with a long, slender, black spine at the 
tip; second appendage a slender, pale arm that is almost straight, and with two hairs 
at the tip. [Proc. Acad. Nat. Sci. Phila., p. 230, pl. 4, fig. 17. 1859.] (Plate 
DXOXONG VFR) 55) Pe nse nes sity hy ea ES oe Aaa ea aba here mony G. cognatella O. 8. 
9. Subcosta short, ending before the origin of the sector, the distance between its tip and 
the origin of the sector being about equal to the r-m cross-vein; vein R:2 oblique, a little 
longer than the r-m cross-vein; male hypopygium with the gonapophyses and the penis 
guard fused into a large, prominent, cylindrical tube: thoracic pleura indistinctly striped. 
[Can. Ent., vol. 48, p. 319-320. 1916.] (Plate XXXVI, 94.]...G. noveboracensis Alex. 
Subcosta longer, ending about opposite the origin of the sector; vein R2 elongate; male 
hypopygium with the gonapophyses and the penis guard not fused into a cylindrical 
tube; thoracic pleura without stripes. [Proc. Acad. Nat. Sci. Phila., p. 231. 1859.] 
(Tat eeONOXG VAI 951) er Conepuen Ses Lae Octal oat tama uay Ninn a med eae G. subcinerea O. S. 
The above key is adapted from a revision of the American species of 
the genus by the author (Alexander, 1916:508-528). 
