250 NEW YORK STATE MUSEUM 



Trotteria caryae Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. no (separate, p. 14) 



(Choristoneura) 

 1908 N. Y. State Mus. Bui. 124, p. 335 



This species was taken at Albany, N. Y., June 20, 1906 on hickory. 



Male. Length 2 mm. Antennae dark brown, probably 20 

 segments, the first with a length about two and one-half times its 

 diameter, the fifth with a length about three-fourths its diameter, 

 cylindric. Palpi; the first segment short, rather slender, second and 

 third subequal, stouter, the fourth one-half longer than the third. 

 Head dark brown with two silvery spots at the base of the antennae, 

 eyes black. Mesonotum covered with bronzy scales. Scute lum 

 and postscutellum with long scales. Pleurae with very large, 

 silvery scales. Abdomen clothed with pale brown scales, those on 

 the last two segments with a bluish tinge. Wings hyaline, costa 

 dark brown, the third vein joining costa at the apical third. Legs 

 thickly scaled, pale yellowish at the base, the tibiae and tarsi dark 

 brown; claws heavy. Genitalia; basal clasp segment stout; terminal 

 clasp segment stout; dorsal plate broad, deeply incised; ventral plate 

 narrow, deeply incised. Harpes stout, nearly straight. Type 

 Cecid. 334. 



Trotteria argenti Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 335 



This midge was taken at Albany, N. Y., July 3, 1906 on New 

 Jersey tea, Ledum latifolium. 



Male. Length 3 mm. Antennae dark brown; 20 segments, the 

 first with a length fully three times its diameter, the fifth with a 

 length scarcely three-fourths its diameter; terminal segment pro- 

 longed, more than twice the length of the preceding, obtusely rounded. 

 Palpi; the first segment short, subquadrate, the second a little 



Fig. 54 Trotteria argenti, posterior femur, enlarged (original) 



longer, stouter, rounding distally, the third longer and more slender 

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

 slender. Mesonotum dark brown, thickly clothed with golden 

 yellow scales, becoming more abundant posteriorly and giving the 

 posterior half of the mesonotum a distinct, yellowish appearance, 



