Dolichomitus mandibularis (Uchida)

Matsumoto, Rikio, 2018, Review of the mandibularis group of the genus Dolichomitus (Hymenoptera, Ichneumonidae, Pimplinae), Journal of Hymenoptera Research 62, pp. 73-82 : 79-80

Dolichomitus mandibularis (Uchida)

Figs 1g , 5

Ephialtes mandibularis Uchida, 1932: 160.

Dolichomitus mandibularis : Townes, Momoi & Townes, 1965: 19.

Remarks.

Relatively small species among members of the Dolichomitus mandibularis group, with fore wing length 15mm or less. This species differs from D. khasianus and D. flavicrus sp. n. by the underside of the metasoma being not entirely blackish (Fig. 1g ), with whitish membranous areas adjacent to sternites, and by its reddish fore and mid coxae (Fig. 5 ) and brown hind femur which is obviously darker than fore and mid femora (in the latter two species almost entirely yellow to reddish yellow).

Length.

Fore wing 11-15mm in ♀, 11-13 mm in ♂.

Specimens examined.

Holotype ♀ of Ephialtes mandibularis Uchida (Fig. 5 ), 1.VII.1929, Minoo, Osaka, (C.Teranishi) (SEHU); 6♂ 2♀, 2.V.2016, Byakugouji-cho, Nara-shi, Nara Pref. (R.M.), (1♂: DNA sample: OMNH_Pol-413, INSD accession number LC337797 ); 2♂, 7.V.2016, same locality, (R.M.); 2♀, 16.V.2016, same locality, (R.M.) (1♀ DNA sample: OMNH_Pol-384, INSD accession number LC337796 ); 1♀, 18.VI.2006, Mikusayama, Nose-shi, Osaka Pref., (R.M.); 1♀, 19.V.1941, Tsuyutani, Aoya-cho [Tottori-shi], Tottori Pref., (H. Aoki); 1♀, 17.VI.1953, Tottori Pref. (H. Aoki).

Distribution.

Japan (Hokkaido, Honshu); China ( Sheng and Sun 2002).

Remarks.

All male specimens were collected while flying along a trunk of an unidentified dead deciduous tree.

Figures

Figure 1. Dolichomitus species of the Dolichomitus mandibularis group: a-d, f, h D. flavicrus sp n. (paratype) e D. khasianus (Holotype) g D. mandibularis a head in frontal aspect b propodeum in dorsal aspect c fore femur in posterior aspect d, e first metasomal tergite in dorsal aspect f, g first to third metasomal segments in ventral aspect h ovipositor tip in lateral aspect. Scale bars: 0.5 mm (a, b, c, h); 1 mm (d, e, f, g).

Figure 5. Holotype female of D. mandibularis: a lateral aspect b labels c underside of data label. Scale bar: 10 mm.