Rhogadopsis clausulata 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 clausulata Han & van Achterberg sp. nov.

Figs 1 , 2–10 , 11–12

Type material.

Holotype, • ♀ ( RMNH), “ South Korea: Kangwondo, Cuncheon, Nam-myeon, Hudong-li , MT [= Malaise trap], 17. viii. – 5. ix. 2003, 37°44'N 127°35'E, P. Tripotin, RMNH ’ 12 ” . Paratype: • 1 ♀ ( RMNH), “ South Korea: Kangwondo, Cuncheon, Magogli, along Hongchen river , 70 m, 12. vi. – 11. vii. 2004, 37°44'N 127°35'E, P. Tripotin, RMNH ’ 12 ” .

Diagnosis.

Antennal scape and pedicel yellowish-brown, but flagellum dark brown (Figs 9 , 10 ); hypoclypeal depression absent (Figs 7 , 8 ); mandible with a rather basal lamella below at base (Fig. 8 ; invisible in anterior view); notauli largely absent on disc (Fig. 4 ); mesoscutum and scutellum shiny, smooth and largely glabrous; medio-posterior depression of mesoscutum absent (Fig. 4 ); pterostigma wide triangular and narrowed apically (Fig. 2 ); vein m-cu of fore wing distinctly postfurcal; second and following tergites dark brown, except light pattern posteriorly (Fig. 5 ); setose part of ovipositor sheath shorter than first metasomal tergite and hardly protruding beyond apex of metasoma (Fig. 6 ).

Description.

Holotype, female; length of body 3.9 mm, of fore wing 3.6 mm.

Head. Antenna with 33 segments and 1.1 × longer than body; third antennal segment 3.0 × longer than its width (Figs 9 , 10 ); eye 1.3 × longer than temple in dorsal view; vertex smooth and frons glabrous, punctate, setose; median keel on face smooth and shiny; clypeus 2.0 × wider than its maximum height, moderately setose, rather flat in lateral view and its ventral margin slightly protruding medio-apically; hypoclypeal depression absent (Fig. 7 ); maxillary palp 1.1 × longer than height of head; malar sulcus present (Figs 7 , 8 ); occipital carina absent dorsally; mandible symmetrical with a rather basal lamella below at base in lateral view (Fig. 8 ).

Mesosoma. Mesosoma in lateral view 1.3 × longer than its height; pronope large and elliptical (Fig. 4 ); propleuron shiny and smooth; pronotal side largely shiny and smooth, but postero-ventral area sculptured; mesopleuron smooth, including narrow precoxal sulcus (Fig. 12 ); epicnemial area crenulate ventrally, remaining area smooth; mesopleural sulcus crenulate; anterior groove of metapleuron crenulate; metapleuron shiny, reticulate-rugose and moderately setose; notauli absent on disc but with pair of short deep impressions anteriorly (Fig. 4 ); mesoscutum and scutellum shiny, smooth and sparsely setose; medio-posterior depression of mesoscutum absent (Fig. 4 ); scutellar sulcus widened medially and distinctly crenulate; propodeum coarsely reticulate-rugose with a short medio-longitudinal carina and diverging oblique two transverse carinae (Figs 4 , 5 ).

Wings. Fore wing (Fig. 2 ): pterostigma wide, triangular and gradually narrowed apically; vein 1 - M almost straight; vein 1 - SR + M straight; vein 3 - SR linear with vein r, 1.5 × longer than vein 2 - SR; vein 2 - SR oblique; vein SR 1 nearly straight; r: 3 - SR: SR 1 = 3: 29: 57; vein m-cu distinctly postfurcal and 4 × longer than vein 2 - SR + M; vein cu-a postfurcal; vein CU 1 b short (Fig. 2 ). Hind wing: vein m-cu only pigmented basally; vein 1 r-m 0.6 × as long as vein 1 - M; vein 2 - M pigmented.

Legs. Length of hind femur 3.4 × its maximum width (Fig. 1 ).

Metasoma. First tergite as long as its apical width, its surface shiny, reticulate-rugose and convex medially in lateral view (Figs 5 , 6 ); dorsope absent, but dorsal carinae strongly developed and separated posteriorly (Figs 4 , 5 ); following tergites smooth and moderately setose posteriorly (Fig. 5 ); second metasomal suture obsolescent dorsally; setose part of ovipositor sheath 0.3 × as long as first tergite and 0.05 × as long as fore wing, and slightly protruding beyond apex of metasoma (Fig. 6 ).

Colour.

Generally black or blackish-brown (Fig. 1 ); scape and pedicel of antenna and ventral half of clypeus yellowish-brown; mandible, tegulae and legs light brown; palpi pale yellowish; posterior bands of third to seventh tergites yellowish; pterostigma and veins of wings brown; wings hyaline.

Variation.

The paratype is very similar to the holotype, but antenna with 36 segments, length of body 4.1 mm, and of fore wing 3.6 mm, medio-longitudinal carina of propodeum distinct and half as long as propodeum.

Distribution.

South Korea.

Biology.

Unknown.

Etymology.

Named after the closed hypoclypeal depression: “ clausus ” is Latin for shut or closed.

Remarks.

This new species runs to Rhogadopsis Brèthes by having a distinct medio-longitudinal carina on the propodeum, a complete vein CU 1 b of fore wing, a symmetrical mandible and a wide hind wing with less oblique vein 1 r-m of hind wing, 0.6 × as long as vein 1 - M ( van Achterberg 2023). It is similar to Rhogadopsis unicarinata (Fischer) because of the lack of the medio-posterior depression of the mesoscutum, the short vein r of the fore wing and the distinct medio-longitudinal carina of the propodeum ( Chen et al. 2016). It differs from the latter by the robust first tergite (slender in R. unicarinata ), lack of the hypoclypeal depression (wide), head mainly black (more or less yellow), absence of precoxal sulcus (present medially), vein m-cu of fore wing straight (curved) and the very large pronope (absent).

Figures

Figure 1. Rhogadopsis clausulata Han & van Achterberg, sp. nov., holotype, ♀, South Korea, habitus, lateral.

Figures 2–10. Rhogadopsis clausulata Han & van Achterberg, sp. nov., holotype, ♀, South Korea 2 wings 3 mesosoma, lateral 4 mesosoma, dorsal 5 propodeum and metasoma, dorsal 6 metasoma, lateral 7 head anterior and mesonotum, antero-ventral 8 mandible, latero-ventral 9 antenna 10 base of antenna.

Figures 11, 12. Rhogadopsis clausulata Han & van Achterberg, sp. nov., ♀, South Korea 11 holotype mesosoma, lateral 12 paratype mesosoma, lateral.