Orgilus boharti Muesebeck 1970

Calif.

Orgilus boharti

Orgilus, new species.—Bohart, 1947, p. 291.

In many respects this is very similar to vallis, new species, but it differs from that form in its uniformly infumated wings, in its much more coarsely rugose propodeum with prominent and relatively long stubs of longitudinal carinae at its posterior margin, in its closely punctate mesoscutum, and the reddish testaceous coloring of the second and third tergites of the female. From detectiformis Viereck, which it also resembles closely, it differs particularly in the presence of sculpture on the upper occiput, in the much more strongly punctate mesoscutum, and in the sculpture of the mesopleura.

FEMALE.—Length about 3.8 mm. Head a little wider than thorax, in dorsal view about 0.6 as long as wide; face 1.3 times as wide as eye height, finely closely rugulose punctate and somewhat mat; malar space longer than clypeus and about half as long as eye height, finely granulose and dull; cheeks also granulose and dull; clypeus closely punctate and shiny; temples gradually receding, nearly three-fourths as wide as eyes, broadly shagreened and mat along the occipital carina, smooth and polished adjacent to the eyes; vertex smooth and shiny, with only setigerous punctures; occiput more or less rugulose above, the occipital carina broadly interrupted at the middle; ocellocular line hardly twice as long as diameter of an ocellus; antennae 29-segmented in the available females, not tapering noticeably toward the tips, and with some of the segments of the apical fourth a little wider than long.

Mesoscutum with notauli deep and coarsely foveolate; middle lobe finely and densely punctate, confluently so anteriorly, the lateral lobes more sparsely but distinctly punctate; disc of scutellum strongly convex, smooth and shiny; propodeum coarsely rugose reticulate on the dorsal face but with a small transverse smooth and polished area each side of the middle at base, the rather long posterior face divided into five large, anteriorly open areas by very prominent stubs of longitudinal carinae; side of pronotum rugulose; mesopleuron smooth and shiny above the longitudinal furrow, rather extensively and coarsely punctate below it, the furrow itself coarsely foveolate and medially widened into a small rugose area; metapleuron rugose, very coarsely so on posterior lower half. Hind coxa about half as long as hind femur, rugulose above at base, rather coarsely granulose outwardly; hind femur about four and one-half times as long as wide; inner calcarium of hind tibia slightly more than half as long as metatarsus, tarsal claws simple. Radial cell on wing margin about as long as stigma; second abscissa of radius only four times as long as the first and on a line with intercubitus; stub of third abscissa of cubitus as long as second abscissa; nervulus very slightly postfurcal; hind wing about 4.2 times as long as wide, lower abscissa of basella slightly longer than nervellus but less than half as long as mediella and much less than half as long as maximum width of hind wing.

Abdomen nearly as wide as thorax, first tergite about 1.3 times as long as wide at apex, finely rugulose except basally where it is smooth and shiny, the spiracles well beyond the basal third of the segment, the basal, dorsal keels poorly developed; second tergite large, slightly broader at base than long, largely smooth and polished but with a little weak sculpture medially toward base; second suture very weak; third and following tergites smooth and polished; ovipositor sheath as long as propodeum and abdomen combined.

Head and thorax black; palpi blackish; mandibles and apex of clypeus reddish yellow; antennae dark brown, scape and first flagellar segment lighter below; tegulae and wing bases yellow; legs, including all coxae, testaceous, with the bases of hind coxae, the basal trochanters, the apices of hind femora and tibiae, and all the tarsi a little darkened, hind femora not darkened along dorsal edges and on inner surfaces as in detectiformis and vallis; forewings entirely rather strongly infumated; abdomen black at base and apex but with apex of first tergite and all of second and third tergites reddish yellow.

MALE.—In general like the female except as follows: Antennae 30-segmented in the two available males with complete antennae, entirely black, longer and tapering noticeably toward tips, all flagellar segments considerably longer than wide; clypeus entirely black; abdomen without the conspicuous reddish-yellow band, the second tergite piceous to castaneous with rufous shadings laterally.

HOLOTYPE.—USNM 70141.

DISTRIBUTION.—Known only from the short type-series consisting of the following: 2 females (one the holotype) and 1 male reared from bent grass at Southgate, Los Angeles County, California, 29 July 1941, and 1 male reared from bluegrass, Bakersfield, California, 30 June 1941, by R. M. Bohart, who has informed me in correspondence that all the specimens were reared from the larvae of Crambus spp.; also 1 female from Tulare County, California, 14 May 1947, collected by N. W. Frazier.