Brachyzapus, Gauld & Dubois, 2006

Choi, Jin-Kyung, Kolarov, Janko & Lee, Jong-Wook, 2019, Descriptions of two new species of Brachyzapus Gauld & Dubois (Hymenoptera: Ichneumonidae: Pimplinae) from South Korea with key to a Palaearctic species, Zootaxa 4711 (2), pp. 293-306 : 294

Key to the Palaearctic species in the genus Brachyzapus

1 Propodeum with apical carina, petiolar area distinct. Hind femur slender.......................................... 2

- Propodeum without apical carina, petiolar area not limited. Hind femur variable.................................... 3

2 Flagellum with white ring. Hind femur 5.0 × as long as wide............................... B. nitidus (Hao & Sheng)

- Flagellum without white ring. Hind femur 6.0 × as long as wide.................... B. unicarinatus (Uchida & Momoi)

3 Scutellum and postscutellum yellow ( Fig. 12 ). All tergites with distinct yellow stripes apically ( Figs 8, 9 ).................................................................................................. B. nikkoensis (Uchida)

- Scutellum and postscutellum black. Metasomal terga entirely black or with trace of yellow stripe on tergites 3–7.......... 4

4 Face very strongly convergent down ( Fig. 3 ), 1.9 × as long as wide. Malar space 0.15 × as long as basal width of mandible..................................................................................... B. convergens sp. nov.

- Face moderately convergent down, 1.6 × as long as wide. Malar space longer...................................... 5

5 Malar space 0.66 × as long as basal width of mandible. Scutellum weakly convex; lateral carina present at base............................................................................................... B. atripedalis Sheng

- Malar space shorter, about 0.3 × as long as basal width of mandible. Scutellum strongly convex; lateral carina extending to middle.............................................................................................. 6

6 Nervellus distinctly reclival, intercepted above middle ( Fig. 35 ). Median dorsal carinae of first tergite short, not reaching middle of the tergite ( Fig. 30 ).......................................................... B. pyramidalis sp. nov.

- Nervellus almost vertical, intercepted on middle. Median dorsal carinae of first tergite longer, reaching or bypass middle of the tergite............................................................................................... 7

7 Face and dorsal surface of propodeum densely punctate. Mesopleuron with epicnemal carina sinuous ( Fig. 41 ). Mesopleural suture strongly angled. Median longitudinal carina of first tergite not extending to posterior transverse smooth band. Second tergite with low basal oblique groove. Hind wing with veins Rs, M and Cu 1 more or less pigmented ( Fig. 42 )......................................................................................... B. tenuiabdominalis (Uchida)

- Face and dorsal surface of propodeum polished, sparsely punctate. Mesopleuron with epicnemal carina weakly curved ( Fig. 27 ). Mesopleural suture weakly angled. Median longitudinal carina of first tergite extending to posterior transverse smooth band. Second tergite with distinct basal oblique groove. Hind wing with veins Rs, M and Cu 1 present as traces..................................................................... B. politus Pham, Broad, Matsumoto & Wägele, 2012

Figures

FIGURES 8–14. Brachyzapus nikkoensis: 8–Habitus in lateral view; 9–Habitus in dorsal view; 10–Head in frontal view; 11–Head in dorsal view; 12–Mesoscutum and propodeum; 13–Mesosoma in lateral view; 14–Wings. Scale bars: 2 mm=8,9,14; 1 mm=13; 0.5 mm=10,12; 0.2 mm=11.

FIGURES 1–7. Brachyzapus convergens sp. nov.: 1–Habitus in lateral view; 2–Habitus in dorsal view; 3–Head in frontal view; 4–Head in dorsal view; 5–Mesoscutum and propodeum; 6–Mesosoma in lateral view; 7–Wings. Scale bars: 2 mm=1,2,7; 1 mm=6; 0.5 mm=3,4; 0.2 mm=4.

FIGURES 29–35. Brachyzapus pyramidalis sp. nov.: 29–Habitus in lateral view; 30–Habitus in dorsal view; 31–Head in frontal view; 32–Head in dorsal view; 33–Mesoscutum and propodeum; 34–Mesosoma in lateral view; 35–Wings. Scale bars: 2 mm=29,35; 1 mm=33,34; 0.2 mm=31,32.

FIGURES 36–42. Brachyzapus tenuiabdominalis: 36–Habitus in lateral view; 37–Habitus in dorsal view; 38–Head in frontal view; 39–Head in dorsal view; 40–Mesoscutum and propodeum; 41–Mesosoma in lateral view; 42–Wings. Scale bars: 2 mm=36,37,41,42; 0.5 mm=40; 0.2 mm=38,39.

FIGURES 22–28. Brachyzapus politus: 22–Habitus in lateral view; 23–Habitus in dorsal view; 24–Head in frontal view; 25– Head in dorsal view; 26–Mesoscutum and propodeum; 27–Mesosoma in lateral view; 28–Wings. Scale bars: 2 mm=22,23,28; 1 mm=27; 0.5 mm=26; 0.2 mm=24,25.