THe CRANE-FLIES oF New YorK— Part I 935 
being the ones that have been removed from Nephrotoma and referred 
- to Tipula on other characters. The immature stages of the known species 
are spent in moist earth and in decaying wood. 
The local species of Nephrotoma may be separated in accordance with 
the following key: 
iL. 
2. 
heraciclciipestblack on largely black... 00/8... ee 2 
Thoracic stripes, if present, brownish or reddish......./...............2-0+0eeeess- 8 
Prescutum with the anterior lateral angles of the lateral stripes and the ends of the 
V-shaped suture deep velvety black; pleura with faint reddish markings. [{ Pachyrrhina 
virescens Loew. Berl. Ent. Ztschr., vol. 8, p. 62. 1864.]........ N. virescens een) 
Prescutum with the stripes uniform black thruout...................0.........00.. 
MAIN cawaunmuneyoround Colonihyalimeni sss sy ney ae snes Ses cess ety ley 5 see ete a ; 
Wings strongly tinged with brown or dusky, at least basally........................ 6 
. Lateral stripes on prescutum curved laterad at their anterior ends. [Pachyrrhina 
incurva Loew. Berl. Ent. Ztschr., vol. 7, p. 293. 1863.] (Plate XLIV, 204.) 
N. incurva (Loew) 
Wateralestmpesionuprescutiumé straight.) secs eos calle elses solu) teeies cee 5 
. A small black spot on the vertex between the antennal bases; wings tipped with brown; 
abdominal segments banded with black. [Pachyrrhina pedunculata Loew. Berl. Ent. 
Ztschr., vol. 7, p. 293. 1863.] (Plate XLIV, 203.)...........N. pedunculata (Loew) 
No small black spot between the antennal bases; wings not tipped with darker; abdominal 
segments trivittate, the lateral stripes interrupted, the median stripe continuous. 
[Pachyrrhina vittula Loew. Berl. Ent. Ztschr., vol. 8, p. 63. 1864.] 
N. vittula (Loew) 
. Lateral stripes on prescutum curved laterad at their anterior ends. [Tipula lineata 
Soom, sim, Commo cy Meee soussean coves cucesooueudes N. lineata eee 
Lateral stripes on prescutum SERA ChiU eater poten meets Mate air Ga em igen N nein Pe malay aNony ree 
. Prescutum with the ground color orange-yellow; scutellum and pleura mostly ce 
abdomen with black dorsal spots. [Pachyrrhina lugens Loew. Berl. Ent. Ztschr.., 
Woks &, jo, Gey USAR Celene DOUIDY | PAE ens dog onkasied ao ne ea N. lugens (Loew) 
Prescutum with the ground color obscure yellow; scutellum and pleura mostly yellow; 
abdomen with a black dorso-median stripe. [Proc. Acad. Nat. Sci. Phila., p. 467-468, 
Ol, UG, te, I, IOUS (CabneDINY, AUR eo cocodogsoceopoasece N. penumbra Alex. 
: Thoracic dorsum dull, opaque; antennae of male very elongated, the flagellum black. 
[Tipula macrocera Say. Journ. Acad. Nat. Sci. Phila., vol. 3, p. 24. 1828.] (Plate 
DLAI, HOD) 6 ay eee eet cere mare ee ee et ty MPN ieee ern erence a N. macrocera (Say) 
Thoracic dorsum more or less shiny; if at all opaque, the antennae of both sexes very 
ELIOT 6 o'o.6 eh eo Hm lala UITCh a GetTeeee cer IME NG tis LOG Ma Eni RCSL Tc este aie ML ee ea ea AUR ra ead ea 9 
Amiennalesesiments mmf ormyinCOlOlay 44 eae aes ce oes acute eiaidera sia achelsiae 10 
Aibenmalese crmentsilolCOLOLOUS/scr5v ave tense see cts cere leie el ae ees ea eon aie nie ected eae ae 17 
. A velvety black spot at the anterior end of the lateral prescutal stripe. [Pachyrrhina 
punctum Loew. Berl. Ent. Ztschr., vol. 7, p. 294. 1863.]....... N. punctum (Loew) 
No velvety black spot:at the anterior end of the lateral prescutal stripe............. 11 
. Occiput opaque with a shining triangular spot in the middle....................... 12 
WCCIMUTESMITITIT Ge Bienys sys Ne enp CAM ate Lab NC lecQur ce ian p iii L Mea aa A mn nape hrety o8 rele 14 
. A black spot at each end of the V-shaped suture. [Tipula ferruginea Fabr. ae 
ANIL Os Aes, OS CHER OUI Gey on 5 dis clocioia ed ado aidig de N. ferruginea (Fabr.) 
No black spots at the ends of the V- shaped SUEUTE rks arty ieee tia) SEM beats ieee ata) ster 13 
. Stigma pale, brownish yellow. [Pachyrrhina occipitalis Loew. Berl. Ent. Ztschr., 
WOls By Wy, GEL; ala AE eA ocd oa eee tocheten Nise ahr Suathic RMT eo N. occipitalis (Loew) 
Stigma dark, blackish brown. [Pachyrrhina gracilicornis Loew. Berl. Ent. Ztschr., 
SO eR SIO MO Ost SOAs Ilniecisicnaissdccicdenetoievtae ciblsyoleteledel a evokerelene o eiersyebe N. gracilicornis (Loew) 
