The Crane-Flies of New York — Part I 891 



2. A supernumerary cross-vein in cell 1st A, connecting the two anal veins. 



Discobola 0. S. (p. 892) 

 No supernumerary cross-vein in cell 1st A 3 



3. Often with a supernumerary cross-vein in cell Sc; antennae of the male bi-, uni-, or 



sub-pectinated Rhipidia Meig. (p. 892) 



No supernumerary cross- vein in cell Sc (excepting a weak one in Dicranomyia simulans); 

 antennae of the male not pectinated 4 



4. Sc usually short, ending opposite the origin of Rs; claws usually with but a single tooth on 



the lower side; ventral pleural appendage of the male hypopygium a fleshy lobe. 



Dicranomyia Steph. (p. 893) 



Sc always elongate, ending far beyond the origin of Rs; r often considerably removed 



from the tip of Rr, claws usually with two or three teeth on the lower side; ventral 



pleural appendage of the male hypopygium horny Limnohia Meig. (p. 895) 



Genus Qeranomyia Haliday 



1833 Geranomyia Hal. Ent. Mag., vol. 1, p. 154. 



1835 Limnobiorhynchus Westw. Ann. Soc. Ent. France, vol. 4, p. 683. 



1838 Aporosa Macq. Dipt. Exot., vol. 1, p. 62. 



1865 Pleltusa Phil. Verb. Zool.-Bot. Ges. Wien, p. 597. 



The genus Geranomyia includes about seventy described forms, the 

 species being most numerous in the Neotropical and Oriental regions. 

 The species are readily distinguished from all other crane-flies by the 

 curious elongate rostrum (fig. 124, a, page 846). The four species occurring 

 within the limits considered in this paper are common and widely dis- 

 tributed; further notes on their distribution have been given by the writer 

 in an earlier paper on the genus (Alexander, 1916:486-496). Nothing is 

 known concerning their immature stages, this being one of the most 

 conspicuous gaps in the whole family. It is probable that G. rosirata, 

 at least, is partly aquatic, living in moist earth or possibly in wet moss. 



The following key divides the local species of the genus: 



1. "Wings heavily spotted with dark brown; tips of the tibiae black. [Limnohia rosirata Say. 



Journ. Acad. Xat. Sci. Phil., vol. 3, p. 22. 1823.] (Plate XXXI, 10.) . G. rosirata (Say) 

 Wings unmarked or with only pale indistinct seams along the cord 2 



2. Sc short, ending opposite or just beyond the origin of Rs; cross- veins and deflections of 



veins faintly seamed with darker. [Proc. Acad. Nat. Sci. Phil., p. 207. 1859.] 



(Plate XXXI, 13.) G. diiersa 0. S. 



Sc long, ending at about midlength of the sector; wings unmarked except for the stigmal 

 spot 3 



3. Body coloration yellow; wings with the stigma pale; legs dull yellow, the femora not 



darkened at their tips. [Journ. N. Y. Ent. Soc, vol. 8, p. 186, pi. 7, fig. 13. 1900.| 



(Plate XXXI, 12.) G. distincta Doane 



Body coloration yellowi.sh brown, darkest on the scutal lobes and the postnotum; wings 

 with the stigma oval, dark brown, well-defined; legs brownish yellow, the femora brown 

 at the tips. [Limnobiorhynchus canadensis We.stw. Ann. Soc. Ent. France, vol. 4, 

 p. 684. 1835.) (Plate XXXI, 11.) G. canadensis (Westw.) 



