Dec, 1919.] Felt: New Gall Midges from the Adirondacks. 291 



segment short, irregular, the second more than twice the length of the first, 

 somewhat dilated, the third a little longer, more slender and the fourth still 

 longer and somewhat dilated apically. Mesonotum reddish brown. Scutellum 

 and postscutellum fuscous yellowish. Abdomen thickly haired, mostly yellow- 

 ish brown, yellowish basally, genitalia yellowish orange, slightly fuscous api- 

 cally. Halteres yellowish transparent, fuscous subapically. Coxae pale yellow- 

 ish. Legs mostly dark straw. Claws long, slender, strongly curved, the pul- 

 villi about J^ the length of the claws. Genitalia: basal clasp segment moder- 

 ately stout; terminal clasp segment rather long, dorsal plate broad, deeply and 

 narrowly emarginate, the lobes roundly and obliquely emarginate, the distal 

 angles distinctly produced, the internal angles slight ; dorsal plate long, broad, 

 slightly constricted subapically, roundly emarginate distally. Type Cecid. 

 1-83. 



Hyperdiplosis insolens new species. 



The male was taken by Mr. Howard Notman August 26, 1917, at 

 Keene Valley, X. Y., and is provisionally referred to this genus. It 

 is easily recognized by the extremely short basal portion of the stem 

 of the fifth antennal segment, the triangular emargination of the 

 dorsal plate and the somewhat heavily chitinized harpes suggesting 

 the condition in Lobodiplosis. It falls in the series with H. eupatorii 

 Felt and H. americana Felt. 



Male. — Length .75 mm. Antennae twice the length of the body, thickly 

 haired, yellowish brown, 14 segments, the fifth having stems with a length y 2 

 and twice their diameters respectively, the distal enlargement subcylindrical, 

 with a length about twice its diameter, the circumfili moderately long, the 

 loops having a length about equal to the diameter of the enlargement; ter- 

 minal segment, basal portion of the stem with a length twice its diameter, the 

 distal enlargement with a length three times its diameter and apically a long, 

 irregular finger-like process. Palpi : first segment with a length about twice 

 its diameter, the second nearly twice the length of the first, the third a little 

 longer than the second and the fourth a little longer than the third. Meso- 

 notum dark reddish brown. Scutellum pale yellowish. Postscutellum darker. 

 Abdomen brownish yellow, genitalia fuscous yellowish. Halteres yellowish 

 transparent. Legs mostly dark straw. Claws moderately long, curved at nearly 

 right angles, the pulvilli less than half the length of the claws. Genitalia : basal 

 clasp segment long, stout, and apically with a short, spined lobe suggestive of 

 that in Lobodiplosis ; terminal clasp segment moderately long, stout, dorsal 

 plate moderately long, broad, deeply and triangularly emarginate, the lobes 

 triangular and sparsely setose; ventral plate shorter, broadly and roundly 

 emarginate, the lobes short, broad and narrowly rounded. Type Cecid. 1769. 



