REPORT OF THE STATE ENTOMOLOGIST 1916 I95 



Neolasioptera albitarsis Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. 1 10, p. 153-54 (Choristoneura) 



1908 N. Y. State Mus. Bui. 124, p. 333 



1910 Econ. Ent. Jour., 3:350 



This species was reared May 18 and 21, 1907 from galls on 

 Diplopappus cornifolius, taken at Nassau, N. Y. 

 This gall resembles rather closely that made by Lasiopt. era 

 d e s m o d i i Felt, and is quite common in places where its food 

 plant occurs. The larvae winter in the galls, adults appearing the 

 latter part of May. 



Gall. The gall produced by this species is a greenish brown, more 

 or less fusiform, irregular swelling on the stem, at or near the base 

 of the leaf. It is about 1 cm long by .6 cm in diameter, and occa- 

 sionally two are fused to form an irregular swelling some 2.5 cm long. 



Male. Length 2.5 mm. Antennae dark brown, yellowish basally; 

 20 segments, the fifth with a length hardly equal to its diameter; 

 terminal segment slightly produced, broadly oval. Palpi; the first 

 segment irregularly sub quadrate, somewhat dilated apically, the 

 second stout, subrect angular, the third one-half longer and more 

 slender than the second, the fourth ever twice the length of the 

 third, more slender. Mesonotum a shining dark brown. Scutellum 

 and postscutellum dark brown. Abdomen evidently badly denuded, 

 a deep salmon, with numerous dark brown or black scales dorsally; 

 probably the segments are margined posteriorly with silvery white, 

 genitalia fuscous. Wings hyaline, costa dark brown, the third vein 

 uniting with costa at the basal half. Halteres yellowish transparent, 

 femora and tibiae a variable fuscous yellowish, tarsi dark brown, 

 the segments annulate basally with silvery white. Color characters 

 from a badly rubbed specimen. Claws long, slender, strongly curved, 

 the pulvilli as long as the claws. Genitalia; basal clasp segment 

 long, stout, terminal clasp segment short, greatly swollen basally; 

 dorsal plate broad, broadly and triangularly emarginate; ventral 

 plate shorter, tapering, narrowly rounded, apex setose. Harpes long, 

 stout, tapering, obtuse. 



Female. Length 3 mm. Antennae sparsely haired, dark brown, 

 basal segments fuscous yellowish; 24 to 25 segments, the fifth with 

 a length about three-fourths the diameter; terminal segment some- 

 what produced, broadly rounded apically. Mesonotum dark brown 

 or black, broadly margined laterally and anteriorly with silvery 

 white, the submedian lines rather thickly clothed with yellowish 

 scales. Scutellum dark brown, thickly clothed apically with whitish 

 scales, postscutellum dark brown. Abdomen dark brown or black 

 with submedian rows of lunate, silvery white spots. Ovipositor 

 pale orange, venter mesially suffused with silvery white. Wings 

 hyaline, costa dark brown, the third vein uniting with the margin 

 just before the basal half. Halteres pale orange basally, light 

 yellowish apically. Legs mostly dark brown, the articulations 



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