REPORT OF THE STATE ENTOMOLOGIST I9I4 2.1'] 



Phytophaga perocculta Ckll. 



1904 Cockerell, T. D. A. Canad. Ent., 36:156 (Cecidomyia) 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 371 (Mayetiola) 



Examples of this form were received from Prof. T. D. A. Cockerell, 

 labeled Colorado Springs, April 21st. The specimens were reared 

 from the stems of willow, Salix. 



Male. Length 2 mm. Antennae about as long as the body, 

 dark brown, thickly long-haired; 20 segments, the fifth with a stem 

 three-fourths the length of the basal enlargement, which latter has 

 a length one-third greater than its diameter; terminal segment 

 produced, tapering, narrowly rounded. Palpi; the first segment 

 rather long, expanded distally, the second a little longer, roundly 

 subquadrate, the third as long as the second, more slender, the 

 fourth one-third longer than the third, slender. Mesonotum dark 

 brown, the submedian lines thickly clothed with very long hairs, 

 they having a length equal to more than two-thirds the width of the 

 mesonotum. Scutellum dark brown, postscutellum a little darker. 

 Abdomen very dark brown and thickly clothed with long, fuscous 

 hairs, the latter having a length about equal to the diameter of 

 the abdomen; genitaUa fuscous. Wings hyaline, costa light brown, 

 the third vein uniting with the anterior margin just before the 

 apex. Halteres yellowish basally, fuscous apically. Legs a variable 

 fuscous yellowish, the extremities of the segments usually darker, 

 the posterior tarsi a lighter fuscous yellowish; claws long, stout, 

 strongly curved distally, the pul villi a little longer than the claws. 

 Genitalia; basal clasp segment short, very stout; terminal clasp 

 segment short, stout, greatly swollen; dorsal plate short, broad, 

 deeply and triangularly emarginate; ventral plate long, narrow, 

 broadly and roundly emarginate. Harpes short, stout, tapering, 

 irregularly oblique, with several subquadrate tubercles. 



Described from the dried type specimens kindly donated by 

 Prof. T. D. A. Cockerell. Type Cecid. 1251. 



Janetiella Kieff. 



1897 Kieflfer, J. J. Syn. Cecid. Eur. & Alg., p. 23 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 371 



1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:336 



191 1 Felt, E. P. N. Y. Ent. Soc. Jour., 19:46 

 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 58 



This genus, when erected, was separated from Oliogotrophus by the 

 elongate, quadriarticulate palpi, and from Phytophaga by the third 

 vein uniting with the anterior margin of the wing and not extending 

 to its apex. The first species named, J. t h y m i Kieff., we take as 

 the type of the genus. This species, according to its describer, has 

 14 antennal segments in both sexes, the middle flagellate segment in 

 the male having a stem with a length equal to the ovate basal enlarge- 

 ment, which latter is provided with two whorls of hairs. The ses- 



