. Diptera : Lonchaeidae, Sapromyzidae, Ephydridae, Chloropidae, Agromyzidae. Diptera. 304 PERCY SLADEN TRUST EXPEDITION at the base, then black ; it is very beautifully feathered, each ray being shaped like an elongated S: there are about 18 rays each side. Palpi stout, fleshy, black and hairy, somewhat compressed sideways. One pair of fronto-orbital bristles, two pairs of verticals, the outer much weaker than the inner, a fine pair of forwardly-directed divergent post-verticals, stout ocellars : in profile the frons is seen to be finely haired all over. Thorax. Dorsum clothed with adpressed h
. Diptera : Lonchaeidae, Sapromyzidae, Ephydridae, Chloropidae, Agromyzidae. Diptera. 304 PERCY SLADEN TRUST EXPEDITION at the base, then black ; it is very beautifully feathered, each ray being shaped like an elongated S: there are about 18 rays each side. Palpi stout, fleshy, black and hairy, somewhat compressed sideways. One pair of fronto-orbital bristles, two pairs of verticals, the outer much weaker than the inner, a fine pair of forwardly-directed divergent post-verticals, stout ocellars : in profile the frons is seen to be finely haired all over. Thorax. Dorsum clothed with adpressed hairs, but the hind part is bare. Scutellum duller and greyish in colour. Bristles normal. Wings (Fig. 1) pellucid with yellow veins, the fine costal ciliation black. Calypters small, whitish yellow, pale-margined and white-haired. Halters black with paler stalks. Legs. Front: femora with two rows of long bristly hairs; tibiae and tarsi clothed with short bristly hairs. Middle : femora all covered with short bristly hairs, an inferior posterior row of longer ones is conspicuous ; tibia? with similar fine bristles and a terminal crown of spines ; tarsi with black bristly hairs. Hind : covered with fine bristly hairs, among which is a somewhat conspicuous row below the i Fig. 1. Lonchcea plumata, n. sp., wing. Abdomen. $. The last segment is slightly longer than the two previous ones together (PL 15, fig. 2) and has the form of a truncate triangle with the end notched. The two angular tips thus formed bear a bunch of black bristly hairs. The whole surface dorsal and ventral is covered with similar hairs which are stouter on the margins of the segments and towards the end of the last segment. $ like the male, except as follows :—Face about one-third as wide again as that of the male ; abdomen with equal segments except the one before the ovipositor, which is a little narrower; the ovipositor is shining black, acicular, scarcely flattened, the sheath is paler. Size about
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdiptera, bookyear1912
