Orgilus infrequens Muesebeck 1970

Mass., Va., Fla., Tex.

Orgilus infrequens

Except for its lighter coloring this species is exceedingly like melissopi, from which it may be distinguished, however, as indicated in the description of that species and in the key.

FEMALE.—Length about 4.6 mm. Head about as wide as thorax, and in dorsal view fully twice as wide as long; face weakly convex, finely punctate, and only very slightly wider than eye height; anterior tentorial pits on a line with lower eye margins; malar space hardly one-fourth as long as eye height; cheeks and lower temples minutely granulose and mat; temples strongly receding, about 0.6 as wide as eyes; occipital carina complete; ocellocular line a little more than twice as long as diameter of an ocellus, the distances between the ocelli very slightly greater than the diameter of one of them; antennae 33- or 34-segmented in the available specimens, most of the segments of the apical fourth fully as broad as long, the apical segment with a minute terminal spicule.

Thorax stout; mesoscutum smooth and very shiny, with scattered weak punctures on middle lobe; the notauli finely foveolate anteriorly and the depression in which they meet not at all rugulose or punctate; unlike the condition in melissopi, the narrow strip along posterior margin of mesoscutum impunctate; propodeum very shiny, convex, rather strongly punctate medially, sometimes confluently so there but very weakly punctate laterally; side of pronotum smooth and polished above the impression, shagreened or, in part, weakly rugulose below it; mesopleuron and metapleuron smooth and polished, the longitudinal furrow of the mesopleuron sinuate and finely foveolate. Hind coxa smooth and shiny outwardly but with a few weak punctures, delicately shagreened on the upper edge; hind femur four times as long as wide; longer calcarium of hind tibia not more than half as long as metatarsus; tarsal claw with a strong subbasal tooth. Radial cell large, on wing margin 1.6 times as long as stigma; second abscissa of radius not nearly on a line with intercubitus; stub of third abscissa of cubitus more or less punctiform; nervulus slightly postfurcal; hind wing barely more than four times as long as wide; lower abscissa of basella longer than nervellus and more than half as long as mediella.

Abdomen smooth and shiny, at most with a little longitudinal striation laterally on the first tergite; first tergite much longer than wide at apex; second tergite nearly as long as wide at base; ovipositor sheath nearly as long as thorax and abdomen combined.

Brownish yellow; antennae dark brown, blackish apically; palpi piceous; stemmaticum black; propodeum somewhat darkened medially; tegulae and wing bases pale yellow; wings clear hyaline; legs concolorous with the body, the middle and hind femora black at apices, the hind tibia infuscated but with a narrow yellowish-white annulus at extreme base and a broader yellowish band at the middle, all the tarsi more or less infuscated; first tergite, except laterally at apex, and the second medially, somewhat darkened.

MALE.—Unknown.

HOLOTYPE.—USNM 70170.

DISTRIBUTION.—Known from three female specimens : The holotype from Florida Caverns State Park, Jackson County, Florida, collected by H. V. Weems, Jr., 21 August 1958; one paratype collected by R. C. Shannon at Mathias Point, Virginia, 5 September 1931, and a second paratype from Martha’s Vineyard, Massachusetts, collected by C. W. Johnson in August 1931.