I go NEW YORK STATE MUSEUM 



and median angles produced; ventral plate long, stout, broadly 

 and roundly emarginate, the lobss irregularly truncate; style long, 

 stout. 



Female. Length 1.75 mm. Antennae as long as the body, sparsely 

 haired, pale straw; 14 segments, the fifth with a stem as long as 

 the basal enlargement, which latter has a length twice its diameter; 

 subbasal andsubapical whorls thick; terminal segment, basal enlarge- 

 ment greatly produced, slender, the distal portion short, stout, 

 narrowly rounded. Palpi; the first segment short, stout, subquad- 

 rate, the second with a length four times its diameter, slender, the 

 third one-third longer than the second, more slender, the fourth a 

 little longer and more slender than the third; thorax and abdomen 

 a very pale lemon yellow, the dorsum of the basal abdominal seg- 

 ment slightly tinged with orange. Wings h3.^aline, costa and mem- 

 brane pale yellowish; halteres yellowish transparent. Legs yellowish 

 transparent basally, the tarsi a very pale yellowish straw. Ovi- 

 positor about one-fourth the length of the abdomen, the terminal 

 lobes constricted at the base, slender, lanceolate, otherwise nearly 

 as in the male. Type Cecid. ai543b. 



Mycodiplosis tenuitas Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 401 



The pale yellowish male was taken June 14, 1906 in a trap lantern 

 at Poughkeepsie, N. Y. 



Male. Length 1.2 mm. Antennae one-half longer than the body, 

 rather thickly haired, straw brown; basally sooty yellowish; 14 

 segments, the fifth with stems three and four times their diameters, 

 respectively. Palpi; the first segment short, stout, subglobose, the 

 second long, subfusifonn, with a length three times its diameter, 

 the third a little longer and more slender than the second, and the 

 fourth longer and more slender than the third; face pale yellowish. 

 Mesonotum a nearly uniform dark brown, the submedian lines 

 yellowish, sparsely haired. Scutellum pale sooty yellow with sparse 

 apical setae; postscutelltmi and abdomen pale yellowish, the latter 

 with the basal segment dark brown and rather thickly clothed dis- 

 tally with pale yellowish hairs. Wings hyaline, costa pale straw; 

 halteres whitish transparent; coxae pale yellowish; femora dull 

 fuscous dorsally, lighter ventrally; tibiae and tarsi mostly pale straw; 

 claws rather long, curved at almost right angles, pulvilli nearly 

 one-half the length of the claws. Genitalia; basal clasp segment 

 long, stout, a broadly triangular lobe at the internal basal angle; 

 terminal clasp segment long, slender; dorsal plate long, broad, 

 deeply and narrowly incised, the lobes very broadly and slightly 

 emarginate, the lateral angles each with a stout seta; ventral 

 plate long, stout, tapering, deeply and triangularly emarginate, 

 the lobes long, stout, narrowly rounded; style long, slender. Type 

 Cecid. 306. 



