MAY FLIES AND MIDGES OF NEW YORK 



101 



nemorosus Meig., n e m o r a 1 i s Meig., and others under 

 the name of L a b i d o m y i a without giving a description of the 

 genus. The type species t r i c h o p t e r u s has the characters 

 of C e r a t o p o g o n sens, str., but has its metatarsus shorter, 

 or no longer than the following joint, and the venation of the 

 type shown on the pl.17, fig.l4. The Abbe J. J. Kieffer, however, 

 says this subgenus cannot stand because that in certain species 

 the male would be classed as F o r c i p o m y i a and the female as 

 Ceratopogon. 



Genus 4. Culicoides Latreille 

 Gea. Ins. et Crust 4:251. 1809. (P1.18, fig.8) 

 Antennae filiform, 14-jointed, hairy ; the second and the six fol- 

 lowing, cylindrical ovate ; the four or five following these rather 

 more elongate, subcylindrical, the last one largest, ovate cylindri- 

 cal. The proboscis markedly longer than the head, conical. The 

 wings deflected, the venation resembles that figured on pi. 17, fig. 

 14. The type is C . p u 1 i c a r is L. (Ceratopogon punc- 

 tata Meigen). Kieft'er (1902) characterizes the genus as fol- 

 lows : The surface of the wing with long hairs, at least that of 

 the female; the tarsi with minute pulvilli not half as long as the 

 tarsal claws, the latter with long setae at the bases. A number of 

 North American species belong to this genus. 



Genus 5. Oecacta Poey 

 Memorias Hist. Nat. Cuba. 1 :236. 1851 

 Judging from the description and figures given by Poey this 

 genus is very closely related to either Ceratopogon or 

 Culicoides. The only important distinction given in the 

 description is the statement that there are fifteen antennal joints 

 instead of fourteen. From the figure given it appears That the 

 author had counted the basal articulation beneath the large basal 

 joint as one, which would only make fourteen joints as reckoned 

 for Ceratopogon. The wing venation, assumir^ Poey's 

 drawing to be strictly correct, does not differ so markedly from a 

 typical Ceratopogon as to exclude it from that genus. The 

 venation resembles that shoAvn on plate 17, figure 14, excepting 

 that R., does not quite reach the margin, and Ro seems to be want- 

 ing. Rj terminates in the stigma. Since Professor Townsend 

 (1897), who has seen this fly, did not question the validity of the 



