Rhogadopsis obliqoides Han & van Achterberg, 2024

Han, Yunjong, van Achterberg, Cornelis & Kim, Hyojoong, 2024, Three new species of the genus Rhogadopsis Brèthes (Hymenoptera, Braconidae, Opiinae) from South Korea, ZooKeys 1214, pp. 325-338 : 325-338

Rhogadopsis obliqoides Han & van Achterberg sp. nov.

Figs 13 , 14–24

Type material.

Holotype, • ♀ ( KSNU), “ South Korea: Baekgye-ro, Okryong, Gwangyang , Jeonnam, 10. ix. – 24. ix. 2019, 35°01'41"N 127°36'51"E, MT [= Malaise trap], Hyojoong Kim leg., KSNU ” . Paratype, • 1 ♂ ( KSNU), “ South Korea: Yeoseo-ri, Cheongsan-myeon, Wando , Jeonnam, 2. vii. 2020, 33°59'15.1"N 126°55'04.6"E, SW [= collected by sweeping], Hyojoong Kim leg., KSNU ” .

Diagnosis.

Second and third metasomal tergites largely smooth except for some faint sculpture anteriorly of both tergites (Fig. 18 ); hypoclypeal depression distinct (Fig. 19 ); precoxal sulcus crenulate (Fig. 16 ); medio-posterior depression of mesoscutum present (Fig. 17 ); first tergite reticulate-rugose without transverse carinae (Fig. 18 ); vein m-cu of fore wing linear with veins 2 - CU 1 and 2 - M (Fig. 14 ); vein 1 r-m of hind wing 0.7 × as long as vein 1 - M; vein m-cu of hind wing absent.

Description.

Holotype, female; length of body 2.1 mm, of fore wing 2.2 mm.

Head. Antenna with 23 segments and as long as body; third segment 2.8 × longer than its width, 1.1 × longer than fourth segment (Fig. 24 ); eye in dorsal view 3.2 × longer than temple (Fig. 20 ); vertex and frons shiny, smooth and sparsely setose; clypeus 2.1 × wider than its maximum height (Fig. 19 ); clypeus rather convex with setae and its ventral margin almost straight; hypoclypeal depression distinct (Fig. 19 ); maxillary palp 0.8 × longer than height of head; malar sulcus present; occipital carina interrupted dorsally; mandible triangular and gradually widened basally (Fig. 19 ).

Mesosoma. Mesosoma in lateral view 1.3 × longer than its height; pronope deep, large and round (Figs 17 , 20 ); mesopleuron smooth but precoxal sulcus oblique and crenulate (Fig. 16 ); epicnemial area smooth dorsally; mesopleural sulcus smooth; anterior groove of metapleuron crenulate, ventral area faintly rugose and remainder area smooth; notauli absent on disc except for both deep and short impressions anteriorly (Fig. 17 ); mesoscutum shiny, smooth and sparsely setose along imaginary notaulic courses and around medio-posterior depression; scutellum shiny and smooth; medio-posterior depression of mesoscutum round (Fig. 17 ); scutellar sulcus widened and distinctly crenulate; propodeum coarsely reticulate-rugose with a medio-longitudinal carina and two oblique transverse carinae (Fig. 21 ).

Wings. Fore wing (Fig. 14 ): pterostigma triangular, gradually narrowed apically; veins 1 - M and SR 1 curved; veins 1 - SR + M and 2 - SR straight; vein 3 - SR 1.7 × longer than vein 2 - SR; r: 3 - SR: SR 1 = 5: 36: 57; vein m-cu distinctly postfurcal and twice as long as vein 2 - SR + M; vein CU 1 b rather long (Fig. 14 ); first discal cell closed. Hind wing (Fig. 15 ): vein m-cu absent; vein 1 r-m 0.7 × as long as vein 1 - M.

Legs. Length of hind femur 4.1 × its maximum width (Fig. 22 ); hind femur with rather long and tibia with medium-sized setae.

Metasoma. First tergite 0.9 × as long as its apical width, its surface shiny, irregularly and densely rugose and convex medially in lateral view (Fig. 18 ); dorsope absent, but dorsal carinae strongly developed (Fig. 18 ); second metasomal suture distinct; second tergite largely smooth but anteriorly striate-rugose; third tergite largely smooth but densely and shortly striate-rugose anteriorly; following tergites smooth and with few setae posteriorly; setose part of ovipositor sheath 0.7 × as long as first tergite and 0.1 × as long as fore wing, slightly protruding beyond apex of metasoma (Fig. 23 ).

Colour.

Generally black (Fig. 13 ); scape and pedicel of antenna brown; antenna, ventral half of clypeus and mandible dark brown; palpi pale yellowish; legs and tegular yellowish-brown; veins and pterostigma greyish; wings subhyaline.

Distribution.

South Korea.

Biology.

Unknown.

Etymology.

The name is a combination of the specific name “ obliqua ” and “ oides ” (Latin for resembling) because the new species is similar to R. obliqua Li & van Achterberg.

Remarks.

This species runs to Rhogadopsis obliqua Li & van Achterberg in the key of Li et al. (2013), because of having the antenna of ♀ with only about 23 segments, clypeus 2.1 × wider than its maximum height, the medio-posterior depression of mesoscutum distinctly impressed, the propodeum with a short medio-longitudinal carina, the wide hind wing with less oblique vein 1 r-m of hind wing, 0.7 × as long as vein 1 - M, the third metasomal tergite largely smooth, ventro-posterior crenulate groove of pronotal side, the medio-posterior depression of mesoscutum distinctly developed and the precoxal sulcus crenulated. However, it differs by having the second metasomal tergite more or less sculptured (smooth in R. obliqua ), the lack of vein m-cu of hind wing (presented as unpigmented trace), vein 1 - M of fore wing distinctly curved (slightly curved), vein m-cu of fore wing twice as long as vein 2 - SR + M (1.5 times longer) and hind tibia of female wider and conspicuously setose (narrower and sparse setose).

Figures

Figure 13. Rhogadopsis obliqoides Han & van Achterberg, sp. nov., holotype, ♀, South Korea, habitus, lateral.

Figures 14–24. Rhogadopsis obliqoides Han & van Achterberg, sp. nov., holotype, ♀, South Korea 14 fore wing 15 hind wing 16 mesosoma, lateral 17 mesosoma, dorsal 18 metasoma, dorsal 19 head, anterior 20 head, dorsal 21 propodeum 22 hind leg 23 ovipositor and sheath 24 antenna.