150 NEW YORK STATE MUSEUM 



with yellowish white scales. Scutellum reddish brown with a few 

 coarse setae apically, postscutellum darker. Abdomen a rich 

 dark brown, the first segment rather broadly banded posteriorly 

 with silvery white, the others with submedian rows of small, lunate 

 silvery white spots and sublateral rows of rather prolonged, silvery 

 white spots, particularly on the second, third and fourth segments, 

 venter suffused with silvery white, genitalia fuscous. Halteres a 

 nearly uniform yellowish orange. Legs mostly a dark brown, the 

 basal half of femora, the femoro-tibio articulation, the extremity 

 of the tibiae and narrow basal annulations on the tarsal segments 

 yellowish white, the bands wider on the posterior legs. 



Female. Length 2.5 mm. Antennae with 20 segments. Meso- 

 notum dark brown, sparsely margined laterally and anteriorly 

 with rather long, yellowish hairs, the submedian lines rather 

 thickly ornamented posteriorly with yellowish hairs. Other 

 markings about as in the opposite sex. 



Bred from a fusiform stem gall on hedge bind-weed. Convol- 

 vulus sepium, May 14, 1907. 



Type Cecid. ai465, N. Y. State Museum. 



Lasioptera cylindrigallae n. sp. 



Male. Length 2 mm. Antennae extending to the base of the 

 abdomen, dark brown, sparsely haired, 15 or 16 segments; face 

 with a conspicuous patch of silvery white scales, the eyes distinctly 

 margined posteriorly with a rather broad band of silvery white 

 scales. Mesonotum dark brown, variably margined laterally and 

 anteriorly with silvery white and yellowish scales, the submedian 

 Hues rather sparsely clothed with golden yellow hairs, the median 

 and sublateral areas rather uniformly clothed with short, golden 

 yellow hairs. Scutellum dark brown with numerous yellowish 

 setae apically, postscutellum dark brown. Abdomen dark brown 

 with large, submedian rows of lunate, silvery white spots, the 

 latter on the posterior margins of the segments and extending to 

 the lateral hne; genitalia dull yellowish, slightly fuscous apically, 

 venter suffused with silvery white scales. Halteres a nearly uni- 

 form pale yellowish. Legs with coxae mostly fuscous, the base of 

 femora yellowish white, the distal portion of tibiae and tarsi dark 

 brown, the latter darker. 



Female. Length 2.5 mm. Antennae with 21 to 22 segments. 

 Color characters about as in the opposite sex. 



