86 THE ENTOMOLOGIST. 
DIADIPLOSIS COCCIDIVORA, N. sp. 
By E. Porter FE.t. 
Tue small midges described below were reared in some 
numbers from a species of Pseudococcus by A. Rutherford, 
Government Entomologist of the Department of Agriculture, 
Peradeniya, Ceylon, and forwarded for identification under the 
date of November 27th, 1913. This species appears to be 
congeneric with D. cocci, Felt, a species reared earlier by Mr. 
William H. Patterson from larve preying upon the eggs of 
black scale, Saissetia nigra, in St. Vincent, West Indies. The 
two species are quite different, and further studies may result in 
their being referred to different genera. 
g. Length 1 mm. Antenne probably half longer than the 
body, presumably thickly haired, fuscous yellowish ; fourteen segments, 
the fifth binodose, the two portions of the stem each with a length 
approximately a quarter greater than the diameter, the distal enlarge- 
ment with a length a quarter greater than its diameter, and bearing 
two moderately stout circumfili. Palpi: the first segment small, 
globose; the second with a length nearly three times its diameter ; 
the third a little longer, more slender. Mesonotum dark yellowish 
brown, the submedian lines, scutellum and postscutellum fuscous 
yellowish. Abdomen fuscous yellowish. Wings hyaline, the third 
vein uniting with costa at the apex of the wing, the fifth joining the 
posterior margin at the distal fourth, its branch at the basal third. 
Halteres and legs a nearly uniform fuscous yellowish, tarsi probably 
somewhat darker; claws moderately stout, strongly curved, the 
anterior and mid unidentate, the posterior simple, the pulvilli about 
half the length of the claws. Genitalia: basal clasp segment 
moderately short, stout ; terminal clasp segment short, stout, with a 
rather large, strongly curved apical spur; dorsal plate long, deeply 
and triangularly emarginate, the lobes narrowly rounded and sparsely 
setose ; ventral plate moderately long, tapering to a narrowly rounded 
setose apex. Harpes foliate, tapering to a narrowly rounded apex, 
laterally with a thick patch of long, stout sete; style long, slender, 
slightly curved. 
@. Length 15mm. Antenne probably nearly as long as the 
body, sparsely haired, dark brown ; fourteen subsessile segments, the 
fifth with a stem one-sixth the length of the cylindric basal enlarge- 
ment, which latter has a length about thrice its diameter. Palpi: 
the first segment subglobose, the second with a length more than 
three times its diameter, the third half longer than the second, 
and more slender. Mesonotum dark yellowish brown. Abdomen 
yellowish orange. Ovipositor short, the terminal lobes narrowly 
oval and sparsely setose, otherwise nearly as in the male. 
Type Cecid a2486. 
State Museum, Albany, N.Y. 
