Dirhinus secundarius Masi, 1933

Narendran, T. C. & van Achterberg, Cornelis, 2016, Revision of the family Chalcididae (Hymenoptera, Chalcidoidea) from Vietnam, with the description of 13 new species, ZooKeys 576, pp. 1-202 : 75-76

Taxon classification Animalia Hymenoptera Chalcididae

Dirhinus secundarius Masi, 1933

Dirhinus secundarius Masi, 1933: 10-11 (♀, Taiwan, (syntypes) (MNHN)); Habu 1960: 131-363 (redescription); Narendran 1989: 290, 301 (keyed).

Description

(based on Habu 1960). ♀.

Colour. Black with following parts as follows: tegulae reddish brown; fore and mid trochanters brown; fore and mid femora reddish black with base and apex brown; fore and mid tibiae brown with basal half slightly reddish; tarsi pale brown; claws and arolium somewhat dark; wings hyaline with somewhat brownish tinge; veins pale brown or dark reddish. Pubescence on body silvery (in some specimen golden dorsally).

Head. Head with horns slightly diverging towards apex, apex with a distinct notch; horns a little wider than space between them; a little more than one-third as long as head; twice as long as wide. Antenna inserted at level of ventral margin of eyes; anterior tentorial pits distinctly delimited by longitudinal carina at outer margin, not distinctly smooth; height of malar space 0.6 × major axis of compound eye; antenna with scape longer than combined length of F1 to F3, 2.1 × as long as clava; F1 a little longer than F2 (12:10); clava about 2.6 × as long as F7.

Mesosoma. Mesosoma with scutellum a little longer than wide, with close pits, interstices carinate; median areola of propodeum subparallel-sided, distinctly longer than wide, with fine secondary carinae; depression posterior to median areola long, lateral costae with two teeth; anterior tooth behind spiracle distinct, posterior tooth small.

Wings. Fore wing with MV 1.2 × as long as SMV.

Metasoma. Petiole slightly longer than wide (12:10) with 4 longitudinal carinae; metasoma a little longer than combined length of pronotum, mesoscutum and scutellum; T1 almost reaching middle of metasoma, with 8 long and six short carinae at base, with posterior margin not straight but produced posteriorly in middle.

Host.

Unknown.

Distribution.

China (Taiwan), Japan.

Remarks.

This species is not known from Vietnam, but included here because it may occur in North Vietnam.