REPORT OF THE STATE ENTOMOLOGIST [916 l |'J 



long, slender, tapering, subacute, near the base five or six stout, 

 recurved hooks. Type Cecid. Q.144.6. 



Lasioptera lactucae Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 151-52 



1908 N. Y. State Mus. Bui. 124, p. 326 



This species was originally reared by the late Dr M. T. Thompson 

 of Clark University from irregular galls on the stalks of rabbit- 

 weed or wild lettuce, Lactuca canadensis. They closely 

 resemble the much more common galls made by A u 1 a x tumidus 

 Bass., though there was no trace of central cells and the rot- 

 ten interior was filled with midge larvae. Doctor Thompson 

 states that he has never found Itonid larvae in Aulax galls 

 and he therefore believes this species to be a gall maker. We 

 have repeatedly examined Aulax galls on this plant without find- 

 ing any Lasioptera larvae. The female of this species was taken 

 on wild lettuce at Karner, N. Y., July 5, 1906 and specimens appar- 

 ently belonging to this form were reared by the United States 

 Bureau of Entomology from a stem gall taken at Holderness, N. H., 

 April 18, 1883. It also occurs in the Riley collection. 



Gall. The gall has been characterized by Doctor Thompson as 

 being exactly like that of Aulax tumidus Bass. 



The larva of apparently this species has been described by 

 Pergande in unpublished notes of the Bureau of Entomology as 

 orange colored. 



Male. Length 2 mm. Antennae, dark brown; 17 segments, the 

 fifth with a length a little greater than the diameter ; terminal seg- 

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

 short, stout, almost subglobose, the second broad, somewhat 

 produced, broadly rounded distally, the third as long as the 

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

 third, more slender. Other color characters presumably as in the 

 opposite sex; the single male obtained was badly rubbed. Wings 

 hyaline, costa dark brown, the yellowish discal spot a little beyond 

 the basal half, the third vein uniting therewith. Claws rather long, 

 stout, strongly curved, the pulvilli as long as the claws. Genitalia; 

 basal clasp segment long, slender; terminal clasp segment swollen 

 at the base; dorsal plate short, broad, broadly and triangularly 

 emarginate; ventral plate long, broad, truncate. Harpes long, 

 slender, tapering. 



Female. Length 1.5 mm. Antennae, dark brown; 19 segments, 

 the fifth with a length a little greater than the diameter; terminal 

 segment somewhat reduced, tapering to a narrowly rounded apex. 

 Palpi; the first segment short, stout, swollen distally, the second 

 about as long, broadly oval, the third more slender and longer, and 

 the fourth one-half longer and more slender than the preceding. 



