FEMALE: Length 9 mm.

Head:

1) head considerably broader than long, 1.24:1; inner margin of compound eyes subparallel; OVD = 4.5MOD, OOD = 3MOD, IOD = 2MOD. 2) supraclypeal area shiny, nearly flat in lateral view, with slightly elevated midline; clypeus mostly shiny, nearly twice as broad as long, its apical margin convex, strongly protuberant in lateral view; labrum slightly broader than long, partly hidden when mandibles are closed. 3) mandible bi-dentate. 4) genal area nearly as wide as compound eye in lateral view. 5) pubescence brown, long and moderately thick, hairs longest and most dense on vertexal area, scape, between antennal bases, and on clypeus, though never obscuring surface below; vertex with a row of yellow hairs along posterior vertexal area; supraclypeal area nearly bare on apical half. 6) clypeus with punctures of two sizes, larger punctures coarse, deep and well separated (<2pd), small punctures fine, shallow, and sparser than large punctures (<4pd); punctures coarse and close basally on the supraclypeal area (<1pd), becoming fine and much reduced apicomedially; lower paraocular area less densely punctate (<2pd) than upper part of face below ocelli (<1pd), where punctures are deep, distinct, and rather fine becoming very sparse with shiny interspaces between antenna and compound eye (1-2pd); punctures small and dense over most of vertexal area (<1pd), with impunctate shiny areas along outer margin of lateral ocelli and anterior to median ocellus; punctures more obscure on upper part of genal area (1-2pd), lower surface of genal area lateral to hypostomal carina shiny, sparsely punctate (3-4pd). 7) IAD subequal to AOD; antennal socket separated from upper margin of clypeus by slightly less than its diameter; antennal flagellomeres wider than long except F1 nearly as wide as long, F10 slightly longer than wide.

Mesosoma:

8) mesoscutum with pubescence long, thin, and pale brown, longest on mesopleuron, mesoscutellum, and lateral propodeum. 9) mesoscutum somewhat shiny, punctures of two sizes: smaller punctures fine, close laterally (≤1pd), finer and crowded along extreme anterior and lateral margins; larger punctures less dense (2-3pd), becoming sparser on disc around admedian line; mesoscutellum shiny, punctures similar to those of mesoscutum, very fine and crowded apically and laterally, even and sparse on disc; mesopleuron somewhat dull, punctures minute, close and obscure anteriorly, more distinct posteriorly (1-2pd); hypoepimeral area strongly imbricate on upper ¾, punctures dense but becoming sparse toward lower margin; propodeal triangle 2/3 as long as mesoscutellum, imbricate with dense and fine striae, adjacent dorsolateral surface densely punctate (1-2pd), punctures of two sizes, lateral propodeal surface anteriorly shiny becoming dull and imbricate posteriorly, punctures separated by 2-4pd. 10) legs dark brown basally, apical tarsomeres somewhat reddened; tibial spurs, especially the mid and hind, long and slender, yellowish, slightly reddened apically, mid tibial spur about 2/3 as long as mid basitarsus. 11) tegula dark brown, dull, obscurely punctate with a few thick brownish hairs anteriorly, becoming shiny and impunctate posteriorly, with sparse hairs on anterior half. 12) wings lightly infuscated, veins and stigma brownish-red, 1st recurrent vein entering 2nd submarginal cell about half as far from base than distance of 2nd recurrent vein to apex.

Metasoma:

13) terga smooth and shiny, punctures well separated (>3pd), denser basally (<1pd); T1-T4 with small punctures dispersed among large ones; T4-T5 with coarser, dense, evenly distributed punctures; apical impressed areas smooth and impunctate; pubescence on disc very short, sub-erect, dark brown-black. 14) sterna with dark, erect apical pubescence, becoming denser on more apical sterna; S1 with sparse pubescence basally, S2 and S3 with long pubescence laterally, medially short, S5 densely pubescent at apex, with a raised carinate ridge.

MALE: Length 8.5 mm.

Head:

1) head much broader than long, 1.23:1; compound eyes very slightly divergent below; OVD = 4.5MOD, OOD = 3MOD, IOD = 2MOD; 2) supraclypeal area nearly flat in lateral view, with slightly elevated midline; clypeus imbricate, slightly protuberant, nearly twice as broad as long; labrum much broader than long. 3) mandible bi-dentate. 4) genal area slightly wider than compound eye, slightly narrowed below. 5) pubescence largely brown between antennae and on scape, clypeus with sparse, thin, erect, brown hairs basally, pale hairs apically, apical margin with dense, long, pale hairs; vertex with a row of yellow hairs along posterior vertexal area; supraclypeal area nearly bare on apical half. 6) punctures of vertexal area fine, less dense medially than on face, with impunctate shiny areas along outer margin of lateral ocelli and anterior to median ocellus, genal area closely and obscurely punctate above, becoming shiny and nearly impunctate below and around compound eye margin; punctures below ocelli fine and densely crowded (<1pd), becoming coarser and less dense (1-2pd) on lower paraocular area, most sparse lateral to antenna (>2pd); supraclypeal area densely pubescent between antennae (<1pd), largely hidden beneath the dense pubescence, punctures becoming finer and sparser apically and laterally (<2pd); clypeus with shallow, dense punctures on apical 2/3 (1pd), beneath the dense pale pubescence, punctures more sparse on the largely bare basal third (2-3pd). 7) IAD subequal to AOD, antennal socket separated from margin of clypeus by a space only slightly smaller than its diameter, F1 about as broad as long, slightly longer than pedicel and half as long as F2, F2 slightly longer than broad, F3-F10 about as long as broad, F11 longer than broad; F6-F11 with basal depression.

Mesosoma:

8) pubescence pale brown, with a few pale hairs on mesopleuron and lateral propodeum, largely brown on mesoscutum and mesoscutellum, longest on mesopleuron, lateral mesoscutellum, and lateral propodeum. 9) mesoscutum and mesoscutellum somewhat shiny, very finely and closely punctate, punctures somewhat separated on discs (2-3pd), becoming denser, but not crowded, at extreme sides (1pd); mesoscutellum with a median depression most strongly pronounced anteriorly; mesopleuron dull, mostly smooth, punctures minute and rather vague, hypoepimeral area strongly imbricate on upper ¾, punctures dense but becoming sparse toward lower margin; propodeal triangle 2/3 as long as mesoscutellum, imbricate, finely rugosostriate, adjacent dorsolateral surface densely punctate (1-2pd); lateral propodeal surface anteriorly shiny becoming dull and imbricate posteriorly, punctures separated by 2-4pd. 10) legs dark brown, hind trochanter triangularly produced ventrally; hind femur robust, greatest width about ¾ length; hind tibia robust, apical width subequal to length, triangular; hind basitarsus parallel-sided, slightly narrowed basally, outer surface slightly concave; mid tibial spur about 0.7 times as long as mid basitarsus. 11) tegula brownish-hyaline, anterior third densely punctate becoming shiny and nearly impunctate posteriorly, with sparse hairs on anterior half. 12) wings lightly infuscated, veins and stigma brownish-red; 1st recurrent vein entering 2nd submarginal cell about half as far from base than distance of 2nd recurrent vein to apex.

Metasoma:

13) terga somewhat shiny, minutely punctate, punctures more dense and fine on basal area (2-3pd) becoming more sparse apically; T1-T4 with small punctures dispersed among large ones; apical impressed areas entirely impunctate, more or less reddened, becoming slightly yellowish hyaline on apices; discal pubescence suberect, thin and obscure, largely pale on the more basal terga, becoming more erect, conspicuous and dark brown-black on T5-T7. 14) S1-S5 relatively simple, S3 medially depressed with a lateral spine, S4 with ventrally directed triangular flange on apical margin medially, with lateral spine as in S3, S5 medially depressed, apical margin broadly and deeply concave, S6 with medial subtriangular area flattened and shiny, with large medial process gradually curved and densely pubescent.

Genitalia: Dorsal view Ventral view

Distribution:

In Canada, this species is known from Waterton Lakes National Park in southwestern Alberta and adjacent British Columbia (see Map).