1 86 



NEW YORK STATE MUSEUM 



slender, strongly curved, the pulvilli as long as the claws. Ovipositor 

 nearly as long as the abdomen, the terminal lobes long, slender, 

 narrowly rounded. Type Cecid. ai4oi. 



Neolasioptera viburnicola Beutm. 



1907 Beutenmueller, William. Amer. Mus. Nat. Hist. Bui. 23:398 (Lasi- 

 optera) 



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



The irregular, subcortical galls of this species occur on the larger 

 branches of arrowwood, Viburnum dentatum, and closely 

 resemble those produced by N . sambuci Felt on elder. It is 

 rather common in the vicinity of New York City. The larvae 

 winter in the gall, the adults appearing the latter part of May. 



Gall. An irregular, subcortical swelling from 2 

 to 5 or 6 cm in length, and approximately 5 cm 

 in diameter. 



Larva. Length 3 mm, rather slender, pale 

 orange. Head small; antennae uniarticulate, 

 slender ; breastbone linear, bidentate, with a min- 

 ute median tooth ; skin rather coarsely shagreened ; 

 posterior extremity broadly rounded. 



Male. Length 1.5 mm. Antennae dark brown, 

 fuscous yellowish basally ; 22 segments, the fifth 

 with a length about three-fourths its diameter; 

 terminal segment tapering to a broadly rounded 

 apex. Palpi; the first segment irregularly sub- 

 quadrate, the second rather stout, rounded, with 

 a length about twice its diameter, the third a little 

 longer, more slender, slightly dilated apically, the 

 fourth one-half longer than the third, more slen- 

 der; face with a patch of silvery white. Meso- 

 notum dark brown, broadly margined laterally 

 and anteriorly with silvery white, the submedian 

 lines rather thickly clothed with light yellowish 

 hairs. Scutellum reddish brown, postscutellum 

 dark brown. Abdomen dark brown, the basal seg- 

 ments silvery white, the second to fourth seg- 

 ments margined posteriorly with silvery white, 

 the latter obsolete laterally, the fifth, sixth and 

 seventh segments with the posterior margin 

 sparsely clothed with long, silvery setae; genitalia fuscous; venter 

 dark brown with a broad, median, white stripe. Wings hyaline, costa 

 dark brown, discal spot pale yellowish, the third vein uniting there- 

 with. Halteres pale salmon basally, semitransparent apically. Legs 

 a variable brown, coxae and extremities of femora and tibiae pale 

 yellowish, the tarsi dark brown; claws rather long, stout, strongly 

 curved, the pulvilli a little shorter than the claws. Genitalia; basal 

 clasp segment long, stout; terminal clasp segment slightly swollen 



Fig. 33 Neolasi- 

 optera vibur- 

 nicola, gall, en. 

 larged (original) 



