Lonchaea pleuriseta
Male and Female. — Glossy black, without a pronounced blue tinge. Orbits
above, and upper half of frons shining, lower part of latter becoming whitish
tomentose and densely so at anterior margin; face, parafacials, and cheeks
densely white tomentose; antennae and palpi black. Legs black, tarsi more or
less broadly reddish yellow at bases. Wings clear, veins brown, paler basally.
Calyptrse gray, fringes black. Halteres black.
Eyes densely hairy, the hairs on male much longer than those no female;
third antennal segment about twice as long as wide, its apex almost at mouthmargin;
cheek from margin of mouth to lower margin of eye wider than third
antennal segment, with rather dense, erect, fine hairs; frons of male about twice
as long as width at vertex, narrowed a little anteriorly, the surface with rather
long hairs, some hairs above orbital bristle; frons of female about one-third of
the head-width, the hairs as in male but shorter; dorsum of thorax with rather
dense hairs; scutellum with numerous hairs on disc and some long setulose hairs
on margin, which are almost as long as the marginal bristles; pteropleura with
some setulose hairs in centre. Second costal division over half as long as first;
inner cross-vein well in front of apex of first vein; veins 3 and 4 subparallel.
Length 4-5 mm.