86 THE ENTOMOLOGIST. 



DIADIPLOSIS COCCIDIVORA, n. sp. 



By E. Porter Felt. 



The small midges described below were reared in some 

 numbers from a species of Pseudococcus by A. Eutberford, 

 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 larvae 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. 



cT . Length 1 mm. Antennse 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 setae ; style long, slender, 

 slightly curved. 



$ . Length 1-5 mm. Antennae 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. 



