200 NEW YORK STATE MUSEUM 



Both of these insects were reared from exuded masses of pitch pro: 
duced by Parharmonia pini Kell. and in the case of tha 
Retinodiplosis, at least, development and transformations occurrec 
within the pitch and the probabilities are that the same is true 
though possibly to a more limited extent, of the Mycodiplosis. 
Mycodiplosis aurata Felt 
1908 Felt, E. P. N.Y. State Mus. Bul. 124, p. 402 
The brownish orange male was taken June 11, 1906 on maple 
leaved arrow-wood, Viburnum acerifolium, at Albany 
INS. 
Male. Length 1.5 mm. Antennae one-half longer than the body 
rather thickly haired, reddish brown; 14 segments, the fifth with 
stems two and two and one-half times their diameters; termina’ 
segment produced, the basal portion of the stem with a length six 
times its diameter, the distal enlargement subcylindric, with a length 
nearly four times its diameter and bearing apically a long, rather! 
stout, fingerlike process. Palpi; the first segment short, stout. 
irregularly subquadrate, the second rather stout, with a length 
four times its diameter, the third a little longer and more slender 
than the second, the fourth one-third longer and more slender thar 
the third. Face pale yellowish brown; eyes black. Mesonotumn| 
rather dark brown, the submedian lines yellowish, sparsely haired. 
Scutellum and postscutellum pale orange, the former sparsely haired. 
Abdomen a bright orange with the basal segments and genitalia 
slightly fuscous and sparsely clothed with fine, reddish hairs, which 
latter are somewhat abundant laterally. Wings hyaline, costa light 
brown. Legs a nearly uniform pale straw; claws long, stout, strongly 
curved, the pulvilli rudimentary, about one-fourth the length of 
the claws. Genitalia; basal clasp segment long, stout; terminal 
clasp segment short, stout; dorsal plate long, deeply and narrowly 
incised, the lobes broad, tapering, subtruncate; ventral plate long, 
broad, broadly and slightly emarginate; style stout. Type Cecid. 
22). 

Mycodiplosis silvana Felt 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 402 
The dark, reddish brown male was taken June 14, 1906 on hem- 
jock, Tsuga canadensis, at Nassau, N. Y. 
Male. Length 1.6 mm. Antennae one-half longer than the body, 
thickly haired, light brown; basal segments yellowish; 14 segments, 
the fifth with stems each with a length two and one-half times its 
diameter; terminal segment, distal enlargement with a length about 
three times its diameter, strongly constricted near the basal third, 
apically a long, tapering, fingerlike process. Palpi; the first segment 
