Orgilus balsameae Muesebeck 1970

Que., N. S., N. B., Maine, N. Y., W. Va., Ont., Mich., Wis.

Orgilus balsameae

Structurally this species is very similar to modicus, new species, seeming to differ only in minor details; but it is readily distinguished from modicus by its blackish antennae, tegulae, and wing bases, its extensively blackish legs, its slightly infumated wings and distinctly pigmented radiella and cubitella of the hind wing.

FEMALE.—Length about 3 mm. Head broader than thorax, in dorsal view about 0.6 as long as broad; face just about as wide as eye height, strongly shiny, weakly rugulose punctate, especially laterally above; clypeus shiny, weakly punctate, medially not separated from the face; malar space shagreened and somewhat mat, about as long as clypeus and 0.4 as long as eye height; lower cheeks shagreened; temples a little rounded, gradually receding, about 0.75 as wide as eyes, smooth and shiny, ocellocular line hardly twice as long as diameter of an ocellus; antennae normally 29- to 31-segmented, the 10 or 12 segments before the last about as wide as long.

Mesoscutum smooth and shiny with only indistinct setigerous punctures; notauli sharply impressed, finely, minutely punctate and meeting at the very apex of the scutum; disc of scutellum smooth and polished; propodeum finely rugulose but with a large smooth and polished area each side of the middle at base and five small, smooth areas at apex separated by very short stubs of longitudinal carinae that arise from the posterior margin; side of pronotum largely finely rugulose but broadly smooth and shiny at upper margin; mesopleuron smooth and polished, the longitudinal furrow nearly straight and finely foveolate; metapleuron rugulose at the posterior margin, otherwise smooth and shiny, with scattered, extremely shallow punctures. Hind coxa very shiny, more or less rugulose on dorsal edge toward base and on upper part of outer side, largely smooth elsewhere; hind femur about twice as long as hind coxa and 4.5 to 4.7 times as long as broad; inner calcarium of hind tibia a little more than half as long as metatarsus, tarsal claws simple. Radial cell on wing margin not longer than stigma; second abscissa of radius on a line with intercubitus; stub of third abscissa of cubitus longer than second abscissa; nervulus distinctly postfurcal; hind wing 4.6 times as long as wide; lower abscissa of basella longer than nervellus but not quite, or barely, half as long as mediella or maximum width of hind wing.

Abdomen slender; first tergite about one and one-half times as long as wide at apex, weakly longitudinally sculptured but smooth and polished basally and narrowly across apex; second tergite nearly as long as broad at base, largely or entirely smooth and polished, at most with a little weak sculpture each side of middle toward base; third and following tergites polished; second suture very fine but distinct; ovipositor sheath slightly longer than propodeum and abdomen combined.

Black; mandibles red; clypeus black; antennal flagellum more or less brownish beneath toward base; tegulae and wing bases black or blackish; all coxae black, remainder of legs dark brown to black, with considerable variation in the intensity of the darkening; wings a little infumated, radiella and cubitella distinctly somewhat pigmented.

MALE.—Like the female in essential characters.

HOLOTYPE.—In the Canadian National Collections.

DISTRIBUTION.—Quebec, New Brunswick, Ontario, Maine, New York, and Wisconsin. The type-series consists of the following: 3 females (one the holotype) and 2 males reared at New Carlisle, Quebec, from what was thought to be Pulicalvaria piceaella (Kearfott) in June and July 1958; 1 female from an unknown host on balsam fir, Ashland, Maine, 14 June 1948; 3 males from P. piceaella on balsam fir, Saranac Lake, New York, 10 June 1948; 1 female from P. piceaella, St. Augustine, Quebec, 29 June 1948; 1 female from the same host, St. Denis, Quebec, 26 July 1947; 1 male and 2 females from "Recurvaria" sp., Tobique, New Brunswick, June and July 1960; 1 male, same host, Kedgwick, New Brunswick, 29 June 1960; 2 unusually small females with 27-segmented antennae from unknown hosts, Burnett County, Wisconsin, 21 May 1956, and Douglas County, Wisconsin, 4 June 1956; 1 female from Zeiraphera sp., Fort William, Ontario; and 1 female, Tobique, New Brunswick, 13 July 1963, 2 females and 1 male, Upsalquitch, New Brunswick, July 1963, 5 females and 3 males, Green River, New Brunswick, July 1963, and 1 male, Cape Breton, Nova Scotia, July 1963, all reared from "Evagora sp." on balsam fir by T. Renault.