192 NEW YORK STATE MUSEUM 



closely fused, subacute. Palpi; probably quadriarticulate ; face 

 pale yellowish. Mesonotum black, the subrredian lines and the 

 lateral and anterior margins rather thickly clothed with yellowish 

 setae. Abdomen black with triangular submedian straw yellow 

 spots on segments one to six; laterally the abdomen has the straw 

 yellow line slightly interrupted at each segment; below this there is 

 a dark line separating it from the white ventral surface. Wings 

 hyaline, costa black, the third vein uniting with the costa near the 

 basal half. Halteres yellowish at the base, fuscous apically. Legs 

 black, the anterior femora with a black line above, pale beneath, 

 the anterior and mid tarsi narrowly annulate with whitish, the pos- 

 terior tarsi broadly so, the fourth and fifth segments entirely white; 

 claws long, slender, strongly curved, the pul villi as long as the claws. 

 Ovipositor about two-thirds the length of the abdomen; terminal 

 lobes rather long, slender, narrowly rounded. Type Cecid. 545. 



Neolasioptera tiliaginea Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 332 



This species was taken on basswood, Tilia americana, at 

 Nassau, N. Y., June 14, 1907 and may be the species responsible 

 for the destruction of many buds on this tree. 



Male. Length 1.25 mm. Antennae dark brown; 16 segments, 

 the fifth with a length one-fourth greater than its diameter ; terminal 

 segment suboval. Palpi; the first segment short, stout, subquad- 

 rate/the second rather broadly oval, the third a little longer, more 

 slender, the fourth one-half longer than the third, more slender. 

 Face pale yellowish brown. Mesonotum dark brown, a conspicuous 

 patch of yellowish white hairs on a broadly crescentic area posteriorly. 

 Scutellum dark brown, pale yellowish apically, postscutellum dark 

 brown. Abdomen a nearly uniform dark brown with the entire 

 lateral portions of the first segment, and lateral subquadrate spots 

 on the second, and nearly the entire anterior portion of the third 

 and fourth segments, yellowish white; the following segments nar- 

 rowly ringed with pale orange, the color of the incisures. Wings 

 (pi. 5, fig. 7) hyaline, costa dark brown with a whitish stigmatal 

 spot at the basal third, the third vein uniting with the margin at 

 the basal third. Halteres pale yellowish orange. Legs pale yellow- 

 ish orange basally, dark brown apically, terminal segments slightly 

 darker; claws rather long, slender, evenly curved. Genitalia; basal 

 clasp segment long, slender; terminal clasp segment swollen at the 

 base. Dorsal plate broad, broadly and triangularly incised ; ventral 

 plate narrow, narrowly rounded. Ha-rpes stout, irregularly triangular, 

 slightly prolonged. Type Cecid. 283. 



Neolasioptera hamata Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 155 (Choristoneura) 



1908 N. Y. State Mus. Bui. 124, p. 332 



