Orgilus strigosus Muesebeck 1970

Wash., Calif.

Orgilus strigosus

This species is most similar to mundus, new species, with which it is easily confused. It differs, however, in its smooth and polished cheeks, relatively longer head and less receding temples, less extensively sculptured second tergite and completely black abdomen.

FEMALE.—Length about 4 mm. Slender, head in dorsal view at least 0.7 as long as wide, not wider than thorax; straight-line width of face hardly exceeding eye height; face largely smooth and shiny but with some well-separated sharp punctures; malar space hardly 0.5 as long as eye height, shagreened and dull; cheeks smooth and polished except near lower and posterior margins where they are shagreened; temples 0.85 as wide as eyes, receding only very slightly, largely smooth and polished; antennae 31-segmented in both known specimens, a few segments in apical third of flagellum a little wider than long.

Mesoscutum shiny, weakly punctate; notauli not deep, finely foveolate and meeting in a very acute angle; disc of scutellum polished but with a few very shallow punctures; propodeum rugulose but with a narrow, triangular, smooth and polished area each side at extreme base, the anteriorly open median apical area rugulose, defined laterally by very short stubs of carinae that arise from the posterior margin; side of pronotum entirely finely rugulose and rather dull; mesopleuron smooth and polished, the longitudinal furrow evenly finely foveolate; metapleuron very shiny and smooth except posteriorly and below where it is finely rugulose. Hind coxa decidedly more than half as long as hind femur, rugulose above, smooth on outer side below; hind femur barely four times as long as broad; inner calcarium of hind tibia fully half as long as metatarsus; tarsal claws simple. Radial cell on wing margin as long as stigma, which is very narrow; second abscissa of radius nearly on a line with intercubitus; stub of third abscissa of cubitus as long as second abscissa; nervulus postfurcal by about one-third its length; hind wing about 4.3 times as long as wide; lower abscissa of basella longer than nervellus but less than half as long as mediella.

Abdomen slender, narrower than thorax; first tergite largely closely, longitudinally striate, 1.5 times as long as broad at apex, the spiracles three times as far from apex as from base; second tergite fully as long as wide at base, smooth and polished except for a small, finely rugulose area each side at base, a broad polished median space between the rugulose patches; remainder of dorsum of abdomen polished; ovipositor sheath a little longer than head, thorax, and abdomen combined.

Black; mandibles and lower third of clypeus ferruginous; scape entirely black, the flagellum dark brown on basal half below, black apically; legs brownish yellow, the hind coxae blackish on basal half, all femora more or less darkened on the inner sides, also hind tibiae at apices and the tarsi more or less, darkened; tegulae and wing bases brownish black; wings lightly infumated; abdomen entirely black.

MALE.—Unknown.

HOLOTYPE.—USNM 70194.

DISTRIBUTION.—Known from two females: The holotype from Sagehen nr. Hobart Mills, California, 21 July 1951, R. H. Goodwin; the paratype from Hope Valley, Alpine County, California, 18 July 1948, R. C. Bynum.