Bracon pallicarpus Thomson, 1894

Samartsev, Konstantin G. & Dokuchaev, Nikolai E., 2024, A new subspecies of Bracon pallicarpus Thomson, 1892 (Hymenoptera, Braconidae, Braconinae) parasitising larvae of Dorytomus cinereus Hochhuth (Coleoptera, Curculionidae) in Magadan Province, Russia, Journal of Insect Biodiversity and Systematics 10 (1), pp. 11-30 : 20-21

Key to the species most closely related to Bracon pallicarpus Thomson

1 Face width about 1.9 × combined height of face and clypeus ( Fig. 38). Clypeal sulcus deep, crenulate. – Vein r arising from basal 0.45–0.50 of pterostigma. Middle flagellomeres 1.1–1.3 × as long as wide. Median length of T1 0.80–0.95 × its apical width. Fifth segment of hind tarsus 0.7–0.8 × as long as second segment. OOL 2.1–2.3 × POL. ( Figs 36–38). ........................................................... B. mediator Nees

— Face width 1.3–1.6 × combined height of face and clypeus ( Figs 6, 7, 41, 51, 54). Clypeal sulcus absent, dorsal clypeal margin more or less smooth. .................................................................................................... 2

2 Suture between T2 and T3 almost straight and wide ( Fig. 40). – T2 with very weak narrow elongate-triangular median area and with large impressed thyridia. Marginal cell 18 × as long as distance from its apex to apex of wing. Longitudinal diameter of eye in lateral view 1.3 × its transverse diameter; transverse diameter of eye (lateral view) 2.5 × minimum width of temple. Vein cu-a postfurcal. Metasoma with distinct rugulose sculpture only on T2. ( Figs 39–42). ...................... B. fukushimai Tobias

— Suture between T2 and T3 curved and less wide ( Figs 12, 13, 24, 44, 48, 53). ............................................. 3

3 Flagellum somewhat thickened, middle flagellomeres less than 1.35 × as long as wide ( Fig. 46). First flagellomere 1.6 × as long as its apical width, penultimate flagellomere 1.5 × as long as wide. – Width of hypoclypeal depression 1.2 × distance from depression to eye. Vein r arising from basal 0.45 of pterostigma. Median length of T1 about 0.85 × its apical width. T2 with spiracles located in anterior part of tergite and with shallow dorsolateral impressions. ( Figs 43–46). ..................... B. momphae Papp

— Flagellum not thickened, middle flagellomeres 1.5–2.1 × as long as wide. First flagellomere 1.7–2.9 × as long as its apical width, penultimate flagellomere 1.6–2.2 × as long as wide. ............................................ 4

4 Longitudinal diameter of eye in lateral view 1.2–1.3 × its transverse diameter; transverse diameter of eye 2.6–3.0 × minimum width of temple ( Fig. 47). Propodeum with mid-longitudinal keel in apical half ( Fig. 48). T2 with weakly defined, small, elongate-triangular median area. – Marginal cell 10–20 × as long as distance from its apex to apex of wing. Claws with acute angularly protruding basal lobe. Median length of T1 0.90–0.95 × its apical width. Spiracle of T2 located in middle of tergite. Ovipositor sheath 1.3–1.8 × as long as hind tibia. ( Figs 47–49). ........................................... B. flavinus Fahringer, 1928

— Longitudinal diameter of eye in lateral view 1.4–1.7 × its transverse diameter; transverse diameter of eye 1.3–2.2 × minimum width of temple ( Figs 19, 50). Propodeum with mid-longitudinal keel occupying less than its apical third ( Figs 23, 55). Median area of T2 indistinct. ......................................... 5

5 Claws with relatively short angularly protruding basal lobe ( Fig. 52). Spiracle located in anterior part of T2. Mesosoma and head with light pattern: face brownish yellow; propleuron, pronotum, mesoscutum along notauli, and mesopleuron dorsally reddish brown. Tegulae yellow. Longitudinal diameter of eye 3.4–3.7 × as long as malar space (front view) ( Figs 50–52). .............. B. pulcher Bengtsson

— Claws with long, protruding (acute or blunt) basal lobe ( Fig. 16). Spiracle located in middle of T2 ( Fig. 24). Mesosoma and head without light pattern, entirely brownish black ( Fig. 14, 56). Tegulae dark brown or yellowish brown. Longitudinal diameter of eye 2.6–3.4 × as long as malar space (front view; Figs 6, 7, 54). ......................................................................................................................................................... 6

6 Metasoma entirely smooth ( Fig. 53). Longitudinal diameter of eye in lateral view 1.6–1.7 × its transverse diameter; transverse diameter of eye (lateral view) 1.3–1.4 × minimum width of temple; hind margins of eye and temple (in lateral view) slightly broadened dorsally ( Figs 53–56). ..................... ........................................................................................................................................ B. conjugellae Bengtsson

— Metasoma with rugulose sculpture on T1–T2 and with weak granulate sculpture on T2–T5 or T2–T6 ( Figs 12, 13, 24). Longitudinal diameter of eye in lateral view 1.4–1.5 × its transverse diameter; transverse diameter of eye (lateral view) 1.5–2.2 × minimum width of temple; hind margins of eye and temple (in lateral view) parallel or broadened ventrally ( Figs 10, 19). ....................................................... 7

7 Longitudinal diameter of eye 3.1–3.3 × longer than malar space (front view; Figs 6, 7). Face width 1.3– 1.5 × combined height of face and clypeus. Vein 3-SR 1.1–1.2 × vein 2-SR ( Fig. 5). Median length of T1 1.1–1.2 × its apical width ( Fig. 11). T2 medially 0.8–0.9 × as long as T3 ( Figs 12, 13). .................................. ................................................................................................................... B. pallicarpus pallicarpus Thomson

— Longitudinal diameter of eye 2.6–2.9 × longer than malar space (front view; Fig. 18). Face width about 1.6 × combined height of face and clypeus. Vein 3-SR 1.2–1.5 × vein 2-SR ( Fig. 25). Median length of T1 0.97–1.06 × its apical width ( Fig. 21). T2 medially 0.70–0.85 × as long as T3 ( Fig. 24). ................................. .............................................................................................................. B. pallicarpus dorytomovorus ssp. nov.