Indiopius chenae van Achterberg & Li, 2013

Han, Yunjong, van Achterberg, Cornelis & Kim, Hyojoong, 2024, Four genera of the subfamily Opiinae Blanchard (Hymenoptera, Braconidae) new for Japan, with the description of two new species, ZooKeys 1206, pp. 207-229 : 207-229

Indiopius chenae van Achterberg & Li, 2013

Figs 14 , 15–25

Indiopius chenae van Achterberg & Li, 2013: 66–69.

Material.

1 ♂ ( OMNH), “ Japan (Honshu): Oyamada-chou, Kawachinagano, Osaka, 34.4509 ° N, 135.5504 ° E, 23. ix. 2017, SW [= collected by sweeping], Shumei Fujie leg., OMNH ”; 1 ♀ ( OMNH), “ Japan (Honshu): Yamazakichou Koudani, Shisou, Hyogo, 35.0238 ° N, 134.5619 ° E, 16. ix. 2019, SW [= collected by sweeping], Shumei Fujie, OMNH ”; 1 ♀ ( OMNH), “ Japan (Honshu): Oyamada-chou, Kawachinagano, Osaka, 34.4509 ° N, 135.5504 ° E, 5. ix. 2016, SW [= collected by sweeping], Takao Aoki leg., OMNH ”.

Diagnosis.

Antenna with 19 segments (Fig. 24 ); between stemmaticum and eyes sparsely setose without depression; occipital carina entirely absent (Figs 19–21 ); clypeus 4.3 × longer than its maximum height (Fig. 19 ); mandible gradually widened basally; vein 1 - R 1 of fore wing 1.7 × longer than distance between apex of vein 1 - R 1 and apex of fore wing; vein cu-a of fore wing interstitial (Fig. 15 ); maxillary palpi 0.5 × as long as height of head; scutellar sulcus robust and distinctly crenulate medially (Fig. 17 ); fore femur somewhat wider than middle femur; strong dorsal carinae separated up to posterior of first metasomal tergite; first metasomal tergite entirely granulate-rugose (Figs 18 , 23 ).

Re-description.

Female; length of body 1.6 mm, of fore wing 1.3–1.6 mm, male; length of body 1.3 mm, of fore wing 1.5 mm.

Head. Antenna with 19 segments, 1.1 × longer than body (Fig. 24 ); third segment 3.1 × longer than its width and 1.2 × longer than fourth segment (Figs 24 , 25 ); middle flagellar segment 2.9 × longer than its width; depression of frons slightly present near antennal sockets; eye as long as temple (Fig. 20 ); vertex, frons, stemmaticum and occiput smooth and glabrous; face shiny, smooth and moderately setose (Fig. 19 ); median keel of frons slightly present; clypeus 4.3 × wider than its maximum height; clypeus narrow, trapezoid-shaped, shiny, smooth, moderately setose and flat in lateral view, and its ventral margin straight; hypoclypeal depression slightly present; maxillary palpi 0.5 × as long as height of head; malar sulcus present and short; occipital carina absent (Figs 20 , 21 ); mandible slightly twisted, moderately setose and slightly widened basally.

Mesosoma. Mesosoma 1.3 × longer than its height (Fig. 16 ); pronope absent; pronotal side smooth, glabrous, and anterior and posterior groove of pronotal side smooth (Fig. 16 ); propleuron shiny, smooth and rather moderately setose; mesopleuron largely smooth, but precoxal sulcus deeply narrowly crenulate; epicnemial area narrowly crenulate ventrally, remaining area smooth; mesopleural sulcus smooth; mesosternum rather sparsely setose; anterior groove of metapleuron smooth; metapleuron largely shiny, smooth and densely setose posteriorly; notauli absent on disc of mesoscutum, but deeply crenulate anteriorly (Fig. 17 ); medio-posterior depression of mesoscutum absent; mesoscutum smooth and glabrous; scutellar sulcus straight, relatively short, medium-sized and densely crenulate medially, but reduced laterally; scutellum smooth, glabrous and not protruding above level of mesoscutum in lateral view (Figs 16 , 17 ); propodeum smooth and glabrous without any carinae (Figs 18 , 22 ).

Wings. Fore wing (Fig. 15 ): Pterostigma triangular; vein 1 - M slightly curved; vein 1 - SR + M curved downwards; vein 3 - SR + SR 1 strongly curved and pointing towards apex of vein 1 - R 1; vein 1 - R 1 of fore wing about 1.7 × longer than distance between its apex and apex of fore wing; vein 3 - SR converging with vein 2 - M; vein 1 - SR short; vein cu-a interstitial; first subdiscal cell open. Hind wing: entirely narrow and subparallel-sided; vein cu-a absent; vein m-cu absent; vein 2 - M pigmented basally and reduced apically.

Legs. Length of hind femur 3.9 × its maximum width; fore femur slightly wider than middle femur, nearly 1.1 × wider than maximum width of middle femur.

Metasoma. First metasomal tergite as long as its apical width, its surface reticulate-rugose with strong dorsal carinae, and slightly convex medially in lateral view (Fig. 14 ); dorsope absent; second metasomal suture obsolescent dorsally (Fig. 18 ); second tergite granulate and glabrous, with pair of triangular depressions basally; third tergite granulate antero-medially and remaining area smooth; following tergites shiny, smooth, and moderately setose posteriorly.

Colour. Body generally dark brown to black (Fig. 14 ); clypeus and mandible, light brown; pronotal side ventrally and first to third anteriorly metasomal tergites, brown; antenna and legs, dark brown (except legs darker brown dorsally); pterostigma and veins of wings, greyish-brown; wings, hyaline.

Distribution.

Japan (Honshu; new record), China (Fujian).

Biology.

Unknown.

Figures

Figure 14. Indiopius chenae van Achterberg & Li, ♂, Japan, habitus, lateral.

Figures 15–25. Indiopius chenae van Achterberg & Li, ♂, Japan. 15 wings 16 mesosoma lateral 17 mesosoma dorsal 18 propodeum and metasoma dorsal 19 head anterior 20 head dorsal 21 head lateral 22 propodeum dorsal 23 first metasomal tergite dorsal 24 antenna 25 base of antenna.