Gnathochorisis Foerster , 1869

Humala, Andrei E., Choi, Jin-Kyung & Lee, Jong-Wook, 2016, A review of the genera Gnathochorisis Foerster and Symplecis Foerster of South Korea, with notes on Korean orthocentrines (Hymenoptera, Ichneumonidae, Orthocentrinae), ZooKeys 562, pp. 85-104 : 87-88

Taxon classification Animalia Hymenoptera Ichneumonidae

Genus Gnathochorisis Foerster, 1869

Gnathochorisis Förster, 1869: 152. Type species: Gnathochorisis flavipes Förster, 1871: 113.

Blapticus Förster, 1869: 171. Type species: Blapticus leucostomus Förster, 1871: 83.

Laepserus Förster, 1869: 205. Type species: Blapticus crassulus Thomson, 1888: 1289.

Acroblapticus Schmiedeknecht, 1911: 2173. Type species: Blapticus dentifer Thomson, 1888: 1288.

Diagnosis.

Body rather stout. Head transverse; clypeus small, weakly to strongly separated from face by a groove; eye large; temple short; malar space with subocular sulcus; occipital carina complete; antenna long, male antenna lacking tyloids. Mesosoma finely or densely punctate on mesoscutum, polished on mesopleuron. Epicnemial carina complete, dorsally distant from anterior margin of mesopleuron; propodeum polished or matt, usually with carinae complete and strong; often propodeal apophyses somewhat developed. Fore wing with areolet present or absent, when present sessile or short petiolate, rectangular. Hind leg as a rule stout, hind femur 2.85-4.9 times as long as high. First metasomal segment with glymma lacking, sternite fused to tergite and reaching 0.5-0.6 of the segment, with spiracle near middle; second tergite matt or polished, sometimes with longitudinal striae; ovipositor upcurved, with a dorsal subapical notch, 0.5-1.1 times as long as hind tibia.

Remarks.

Medium-sized genus, with 13 described species ( Yu et al. 2012). Eight species occur in the Nearctic region and seven in the Palaearctic region (two species are distributed on both continents). Beyond the Holarctic region, one species of Gnathochorisis is known in Mexico ( Dasch 1992, Humala et al. 2011). The genus was also reported from Australia ( Gauld 1984), Ecuador, and Central America ( Veijalainen et al. 2012). Five species of Gnathochorisis , including two newly described, are presently reported from South Korea here. This is the first record of the genus from this country. In the European part of Russia Gnathochorisis flavipes Förster was reared from the fungus gnat Neoempheria striata Meigen ( Mycetophilidae : Mycomyinae) ( Humala 2003), other published host records ( Dasch 1992) seem to be doubtful.

Key to species of Gnathochorisis occurring in South Korea