Protarchus, Forster, 1869

Watanabe, Kyohei, 2024, Taxonomic Study of Japanese Ctenopelmatinae (Hymenoptera, Ichneumonidae), with Descriptions of 22 New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 53, pp. 39-102 : 88

Key to Japanese species of Protarchus (modified from the key in Viitasaari (1979))

1. Metasomal tergites entirely black ( Fig. 32A ). Hind femur reddish brown ( Fig. 32A ). Hind tibia black except for its base sometimes tinged with red or yellow ( Fig. 32A ). Notaulus weak and sharrow.

......................... Protarchus sorbi ( Ratzeburg, 1844) -. Metasomal tergites with reddish brown markings. Hind femur and tibia reddish brown except for apical part of tibia more or less darkened. Notaulus strong and sharp.

.................. Protarchus testatorius (Thunberg, 1822)

Figures

Fig. 32. Protarchus sorbi (Ratzeburg, 1844) (KPM-NK 84816, female) ― A: lateral habitus; B: head, frontal view; C: mesopleuron; D: propodeum and T I, dorsal view; E: areolet.