Felt, E.P.

Proceedings of the Hawaiian Entomological Society

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43A New Species of Gall Midge Predacious on MealybugsBY DR. E). P. FELTStamford, Conn.(Presented by Dr. Carter at the meeting of February 4, 1937.)Dicrodiplosis guatemalensis n. sp.The gall midges were received under date of December 11, 1935from Dr. Walter Carter, accompanied by a statement that they werereared from brilliant carmine colored larvae, predacious on mealybugs, the specimens being labelled "Guatemala May 1935". Thespecies is tentatively referred to this genus.Mate.—Length 1.5 mm., antennae nearly as long as the body, ratherthickly haired, mostly dark brown, the distal portion of the segments yellowish,fourteen segments, the fifth with stems one-half and one and one-half timestheir diameter, the basal enlargement globose, the distal enlargement with alength twice its diameter, slightly constricted in the middle; there are whorlsof stout setae nearly as long as the segment, basally on the basal enlargement,distally on the distal enlargement, the circumfila moderately numerous andwith a length about equal to the diameter of the enlargement; palpi quadri-articulate, the first segment quadrate, the second with a length one-halfgreater than its width, the third and fourth each with a length about fourtimes the width; eyes fused at the apex; mesonotum, scutellum and post scu-tellum reddish-brown, abdomen mostly yellowish-brown; wings hyaline;halteres whitish, transparent; legs thickly haired, mostly dark brown, femoraand tibiae narrowly banded with yellowish at the apex, tarsal segments broadlybanded apically with yellowish, the distal tarsal segment of the posterior legsyellowish-white; claws long, strongly curved, unidentate, the pulvili rudimentary; genitalia yellowish; basal clasp segment moderately long, broad,with a small basal process, terminal clasp segment slender, as long as the basalclasp segment; dorsal plate triangularly emarginate, the lobes tapering andnarrowly rounded; ventral plate long, divided, the lobes long, slender, andbroadly rounded; harpes broadly sickle-shaped; style long, slender.Female.—Length 1.5 mm., antennae about one-half the length of the body,rather thickly haired, mostly dark brown, the tips of the segments obscurelyyellowish, the fifth with a stem one-fourth the length of the cylindrical basalenlargement, which latter has a length about five times its diameter; ovipositorshort, the lobes long, broadly rounded, with a length about five times theirwidth and rather thickly setose. Other characters about as in the male.Types deposited in the U. S. National Museum, co-types in thecollection of the Experiment Station, Pineapple Producers Cooperative Association, Ltd., Honolulu, Hawaii.Proc. Haw. Ent. Soc, X, No. 1, July, 1938.

A New Species of Gall Midge Predacious on Mealybugs

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A New Species of Gall Midge Predacious on Mealybugs

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