Lonchaea atraposa
Aim. Resenibling L. jol.w.rcyi n. sp. in general appearance, but differing as follows:
Larger; length 4.5 to 5.5 mm. \\'ithour purplish reflections. Compound eye pubescent; hairs
fully as long as com!>ined diameters of two ommatidia, but rather sparse. Always with
hereral hairs on orbital plates above orbital bristle. Frons slightly broader throughout. Parafacial
broader; opposite base of antenna, almost as wide as distance between posterior ocelli.
?\ntennae lnnger and narrower. Third segment about 2.7 times as long as wide (8.1:3.0).
Arista yellowish-brown on basal third.
Notopleural depression and prescutellar area with several hairs. With 5 or 6 stigmatal
hairs. Scutellum with numerous hairs on margin between the bristles, and a few in front of
the anterior bristle; disc with many erect hairs, some arising cephalad of anterior brirtles.
Sternopleuron with 2 or 3 strong hairs behind bristle.
Two basal segments of front tarsi and first three of mid and hind tarsi always pale
yellow.
Epandrium in side view not as high in proportion to length. Cercus about half as large
in proportion to size of epandrium. Posteroventral projection of surstylus much shorter and
blunter; inner surface of surstylus with a blade-like flange dorsomesad of posteroventral
projection, somewhat as in L. laxa Collin, but smaller. Anteroventral surface of basal segment
of aedeagus appearing as if a relatively large bite had been taken out of it, i.e., lateral profile
with a strong concavity midway along ventral surface.
FEMALE. Resembling male except for usual sexual differences. Somewhat larger than
male. Ovipositor very similar to that of S. johnseyi and laxa.