Illustrated Key to the Genera of Pepsinae of Northeastern North America

(Modified from Townes, 1957)

[Illustrations Coming Soon]

II. Key to the tribes and genera of Pepsinae of Northeastern North America

 

1A    a. T1 in dorsal view straight or slightly convex on the sides, forming a broad attachment to the propodeum.

        b. T1 laterally with a fine suture that marks off a laterotergite.

        c. Parapenial lobe of male not decurved at apex to form a hook (Pepsini)...............................................................................2

1B    a. T1 in dorsal view concave on the sides, giving the abdomen a slightly petiolate appearance.

        b. T1 laterally without a fine suture as above (exception: Phanagenia).

        c. Parapenial lobe slender and decurved at the apex, forming a hook (Ageniellini)................................................................10

 

2A    a. S6 strongly laterally compressed.

        b. tCu2 (2r-m) and tCu3 (3r-m) continuously curved outward and similar in appearance.

        c. Lacking a series of teeth on dorsal side of posterior tibiae in both sexes.

        d. Claws bifid..............................................................................................................................................V. Minagenia Banks

2B    a. S6 not strongly laterally compressed.

        b. tCu2 (2r-m) and tCu (3r-m) not similar in appearance, one or the other may be continuously curved.

        c. At least females with a series of teeth on the dorsal edges of the posterior tibiae (exception: Dipogon).

        d. Claws dentate.......................................................................................................................................................................3

 

3A    a. Mandible with three teeth (including the apical point).

        b. Dorsal surface of hind tibiae of both sexes lacking a series of teeth.

        c. Cardo of each maxilla of the female with a fascicle of long, curved hairs...................................................XI. Dipogon Fox

3B    a. Mandible with two teeth (including the apical point).

        b. Dorsal surface of the posterior tibiae of at least the female (commonly the male) with a series of teeth.

        c. Cardo of each maxilla of the female lacking a fascicle of hairs.............................................................................................4

 

4A    a. MC apically separated from costal margin, the apical tip of the cell rounded.

        b. SM2 receiving rv1 before its basal 0.33.

        c. Very large species; all black with brilliant blue refulgence and yellow flagella.........................................Pepsis menechma

4B    a. MC apically adjacent to the costal margin.

        b. SMC2 receiving rv1 beyond its basal 0.4.

        c. Smaller species; color various...............................................................................................................................................5

 

 

5A    a. tCu2 (2r-m) straight (vertical or oblique).

        b. Legs and antennae short and stout; 2nd flagellomere 1.5-4.5X as long as wide.

        c. Clypeus wide, short, and rather flat.

        d. Brush on inner side of posterior tibia broadly continuous to the apex.......................................VI. Calopompilus Ashmead

5B    a. tCu2 (2r-m) more or less curved (exception: Entypus and Cryptocheilus).

        b. Legs and antennae longer and more slender; 2nd flagellomere rarely less than 3.2X as long as wide.

        c. Clypeus larger and more convex.

        d. Brush on inner side of posterior tibia often with a subapical constriction or interruption.......................................................6

 

6A    a. Cu not quite reaching wing margin.

        b. A of posterior wing meeting Mdv beyond the origin of Cu.

        c. Clypeus very large and convex........................................................................................................VII. Priocnessus Banks

6B    a. Cu reaching wing margin -OR- if not:

        b. A of posterior wing meeting Mdv distinctly before the origin of Cu.

        c. Clypeus smaller and not quite as convex..............................................................................................................................7

 

7A    a. Underside of apical tarsal segment with two longitudinal rows of bristles.

        b. tCu2 (2r-m) straight or evenly curved....................................................................................................................................8

7B    a. Underside of apical tarsal segment lacking bristles, or if present they are not arranged in two longitudinal rows.

        b. tCu (2r-m) straight anteriorly but strongly curved posteriorly.................................................................................................9

 

8A    a. Carina on mesosternum in front of each mesocoxa angled medially and at the angle usually produced as a tooth.

        b. A of posterior wing meeting Mdv before, at or occasionally beyond the origin of Cu........................VIII. Entypus Dahlbom

8B    a. Carina on mesosternum in front of each mesocoxa evenly curved.

        b. A of posterior wing meeting Mdv distinctly before the origin of Cu................................................IX. Cryptocheilus Panzer

 

9A    a. Jugal lobe elliptical, the apical half of its hind margin evenly curved.

        b. Anterior tibiae of female without a stout, blunt, spine-like bristle on its outer apical corner.

        c. tM of anterior wing beyond BV by 0.7-1.3X its length.

        d. Pronotum of normal length..............................................................................................................X. Priocnemis Schiodte

9B    a. Jugal lobe subtriangular, the apical half of its hind margin rather straight.

        b. Anterior tibiae of female with a stout, blunt, spine-like bristle on its outer apical corner.

        c. tM of anterior wing at or beyond BV by less than 0.3X its length.

        d. Pronotum quite short......................................................................................................Caliadurgus fasciatellus (Spinola)

 

10A  a. T1 laterally with a fine suture that marks off a laterotergite.

        b. Propodeum without long, erect hairs.

        c. Mentum of female with a brush of about 20 long bristle that are not divided into left and right groups.

        d. Underside of apical tarsal segment with preapical bristles............................................Phanagenia bombycina (Cresson)

10B  a. T1 lacking with a fine suture that marks off a laterotergite.

        b. Propodeum with or without long, erect hairs.

        c. Mentum of female with a few weak bristles or with a brush of strong bristles that are divided into left and right groups.

        d. Underside of apical tarsal segment without preapical bristles.............................................................................................11

 

11A  a. Propodeum with long, erect hairs.

        b. Female with a bare, oval area on T6.

        c. Female with a brush of strong bristles on the mentum (divided into two groups: one left, one right).

        d. SGP of male large with a high, sharp longitudinal ridge.....................................................................XII. Auplopus Spinola

11B  a. Propodeum on northeastern species without long, erect hairs.

        b. Female without a bare area on T6.

        c. Female with at most a few weak bristles on the mentum.

                d. SGP of male smaller, with the ridge (when present) low and dull........................................................XIII. Ageniella Banks