Aplonyx Sarcobati N. Sp. 



E. P. FELT 



Albany, New York 



The small midges described below were reared in numbers 

 December 23, 1913, from oval swellings on the leaves of grease 

 wood (Sarcobahis vermiculatus) collected at Canyon City, Colo- 

 rado, November 23, 1913, by Prof. Ellsworth Bethel. The galls 

 were apparently abundant and contained orange yellow larvae. 

 Recently emerged females have the abdomen filled with some 

 fifty or more narrowly oval eggs. It is remarkable that this 

 peculiar type, first discovered in the Mediterranean region, 

 should be represented by a close ally on the plains of Colorado. 



Male — Length 1.3 mm. Antenna extending to the third ab- 

 dominal segment, sparsely haired, dark brown; twelve sessile 

 cylindric segments, the third and fourth rather narrowly fused, 

 the fifth with a length three-fourths its diameter, the terminal 

 segment with a length over three times its diameter, broadly 

 rounded apically and composed of three closely fused segments. 

 Palpi — The first segment short, irregular, the second broadly 

 oval, both sparsely setose. Mesonotum dark brown. Scutellum 

 and postscutellum fuscous yellowish. Abdomen dark brown, 

 the basal and terminal segments yellowish orange, the genitalia 

 fuscous yellowish. Wings hyaline, costa yellowish brown, 

 thickly scaled, subcosta uniting therewith near the basal half; 

 the fifth vein simple, uniting with the posterior margin at the 

 distal third, the sixth at the basal third. Halteres, coxae, femora 

 and tibiae fuscous yellowish, the tarsi dark brown. Claws 

 moderately stout, strongly curved, simple, or at most, very 

 minutely toothed, the pulvelli as long as the claws. Genitalia — 

 Basal clasp segment long, moderately stout; terminal clasp 

 segment swollen basally, with a length about half that of the 

 basal clasp segment and with a distinct apical tooth; dorsal 

 plate rather long, broad, broadly and roundly emarginate, the 

 lobes somewhat divergent and narrowly rounded; ventral plate 

 long, moderately broad and broadly rounded. Harpes long, 



