Lepidopria bicarinata, Chemyreva & Yoon & Ku, 2025

Chemyreva, Vasilisa G., Yoon, Seonwoo & Ku, Deok-Seo, 2025, Revision of the genus Lepidopria Kieffer (Hymenoptera, Diapriidae, Diapriinae) of the world fauna, Journal of Hymenoptera Research 98, pp. 1107-1126 : 1107-1126

Lepidopria bicarinata sp. nov.

Figs 2 , 3

Type material.

Holotype, • female: South Korea, Jeju-do (JJ), Jeju-si, Sanduk-ro, 593-40, near Temple Gwaneum rest area (Livestock Research Institute), MT , 1–24. IX. 2022, Deokseo Ku & Jeongjun Ahn legs ( NIBR) . Paratypes: same locality as holotype, 1–16. VII. 2022, 16–31. VII. 2022, 1 ♀ and 2 ♂ ( ZISP) .

Etymology.

The name derives from Latin “ bi- ” and “ carina ” and refers to the well-developed two carinae on male A 3 and A 4.

Diagnosis.

Head globular in frontal view (Fig. 2 E ); female antennae stout, with A 9 - A 11 transverse, A 9 about as long as, and as wide as A 10 (Fig. 2 F ); male A 3 with carina and without emargination, male A 4 slightly enlarged, slightly longer and slightly wider than A 3, with shallow emargination and membranous, pale carina (Fig. 3 D, E ); mesoscutellum with single transverse scutellar pit (Figs 2 B , 3 B ); propodeum densely setose dorsally, with median carina; plica hardly indicated under setae (Figs 2 B, D , 3 B ); petiole weakly swollen dorsally and projecting upwards, dorsally covered with foamy structure in female and long pale setae in male (Figs 2 B, D , 3 B ).

Description.

Female, holotype. Body length 1.5 mm, antennae length 0.85 mm; fore wing length 1.4 mm. Body dark brown except petiole and apex of metasoma brown; tegulae, antenna and legs brownish yellow.

Head rounded, smooth, in dorsal view as long as wide, and 1.15 times as high as long in lateral view, covered with short, erect setae; postgenal cushion dense; ocelli small, inconspicuous, arranged in an almost equilateral triangle; LOL 2.5 times as long as diameter of frontal oculus; OOL large, 3 times as long as POL; compound eye small with fewer than 50 ommatidia; face smooth, epistomal sulcus indistinct; malar space large, 1.1 times as long as height of eye; tentorial pit small and distinct; malar distance about as long as shortest distance between eye in frontal view; mandibles bidentate, with apices slightly overlapping.

Antenna 12 - merous, covered with short, semidecumbent to erect setae; A 1 slightly compressed and curved, about 3.7 times as long as its greatest width, smooth, shining, and bare ventrolaterally, coriaceous and setose otherwise; in dorsal view A 2 cylindrical and 1.8 times as long as wide, in lateral view it tapering towards base; A 3 slightly narrower than the A 2, 1.5 times as long as wide; A 4 and A 5 about as wide as A 3, subequal to each other and about 1.2 times as wide as long; A 6 - A 8 distinctly transverse and becoming gradually wider; A 9 - A 12 forming abrupt 4 - segmented clava, its setation denser and slightly shorter than on other antennomeres; A 10 and All subequal, slightly transverse; A 9 transverse and slightly wider than A 12; A 12 ovoid, 1.2 times as long as wide.

Mesosoma about as wide as head; pronotal collar weakly developed (Fig. 2 B, D ); pronotal shoulders prominent, crossed with sharply projecting pronotal suprahumeral sulcus (Fig. 2 D ); lateral side of pronotum smooth, with short scattered and erect setation; propleuron with setae and foamy structures on ventral 0.3 and smooth and bare dorsally; mesoscutum weakly convex anteriorly and laterally, and slightly depressed posteromedially, without notauli and covered with short, scattered erect setae; mesoscutellum with transverse and reniform anterior scutellar pit, pit smooth and bare inside; mesoscutellar disc with very weak median carina and elongate rugulae anteriorly, covered with several erect setae laterally; mesopleuron smooth, laterally covered with scattered, short, erect setae; mesopleuron ventrally with short recumbent setae and foamy structures anterior to mid-coxa; metanotum entirely setose, sculptured with scattered setigerous punctures; metascutellum short, with low median carina and weakly projecting lateral carina; ventral side of metapleuron with foamy structure; propodeum and metapleuron entirely densely setose, covered with short, adpressed white setae; metapleuron and lateral side of propodeum without visible carinae; in dorsal view posterior margin of propodeum deeply arcuate: propodeum short medially and significantly longer laterally; lateral and median carinae of propodeum almost parallel, narrow and hidden under setation; nuchal area smooth and bare. Legs moderately robust, covered with short, erect setae similar to those of body; fore tibia with apical spine, its length about half of apical width of tibia; all femora with short basal stalk; hind femur 2.3 times as long as its greatest width. Fore wing 0.9 times as long as body, with single costal vein reaching 0.3 of fore wing length.

Metasoma. Petiole cylindrical in dorsal view, as wide as long, densely covered with foamy structure on dorsal surface; in lateral view, medial portion slightly swollen upwards; ventral side of petiole covered with short recumbent white setation, not projecting ventrally; gaster about 0.9 times as long as head and mesosoma combined, more than 1.7 times as long as its greatest width, dorsoventrally compressed; T 2 dorsally with short, erect, evenly distributed setae, base of T 2 flat, wider than petiole; T 3 - T 5 smooth and scarcely setose; base of S 2 densely setose, with deep lateral groove and median convexity; basal corners of S 2 extending forwards either side of petiole beyond base of large tergite; ovipositor shortly exserted.

Male. Body length 1.4 mm. Differing from female as follows: colour of body black, mandibles and tegula brown, antennae dark brown with A 2 yellowish, legs yellowish brown with coxae, femoral and tibial clubs darkened; body less densely setose than in female, especially metasoma, foamy structures developed only on propleuron ventrally and hidden under long setation; eye and ocelli distinctly larger; malar space short, eye 3.2 times as high as length of malar space; antenna 14 - merous, scape as for female, pedicel cylindrical and narrowed at base, 1.5 times as long as wide; A 3 and A 4 modified, its inner surface curved and with carina, 1.7 and 1.8 times as long as it greatest width respectively; A 4 1.2 times as long as A 3; A 5 - A 11 about as long as wide; A 12 and A 13 slightly elongate; A 14 ovoid; petiole 1.4 times as long as wide, slightly swollen dorsally and covered with long wight setation; gaster broader, 1.5 times as long as greatest width.

Biology.

Unknown.

Distribution.

South Korea.

Figures

Figure 2. Lepidopria bicarinata sp. nov., female. A habitus, lateral view B head, mesosoma and base of metasoma, dorsal view C metasoma, lateral view D head and mesosoma, lateral view E face F antenna, lateral view. Scale bars: 0.5 mm (A); 0.3 mm (B – E).

Figure 3. Lepidopria bicarinata sp. nov., male. A habitus, lateral view B mesosoma and metasoma, dorsal view C antenna, lateral view D, E base of antenna in dorsal (D) and lateral (E) views. Scale bars: 0.5 mm (A); 0.3 mm (B, C).