Triraphis storozhenkoi Belokobylskij & Ku, 2025

Belokobylskij, Sergey A. & Ku, Deok-Seo, 2025, The species of the genus Triraphis Ruthe, 1855 (Hymenoptera: Braconidae: Rogadinae) in the fauna of the Korean Peninsula, Zootaxa 5715 (1), pp. 106-118 : 111-112

Triraphis storozhenkoi Belokobylskij & Ku , sp. nov.

http://zoobank.org/ E83FCE21-7181-4ABA-8564-0FD15181B6C3

( Figs 4 ; 5 )

Type material. Holotype: female, “ Korea: Jeollanam-do ( JN), Gangjin-gun, Gundong-myeon, Deokcheon-ri , 28.VIII–11.IX.2017, Hyung-Keun Lee, Malaise trap, 34°55’47.64’’ N, 126°57’49.37’’ E ” (NIBR) . Paratype. 1 female, “ Jeollanam-do ( JN), Wando , 7–20.VIII.2018, Hyung-Keun Lee, Malaise trap ” (ZISP) .

Description. Female. Body length 3.6–3.8 mm; fore wing length 3.2–3.3 mm. Head width (dorsal view) 1.8– 1.9 × its median length. Occipital carina widely interrupted dorsally. Head behind eye (dorsal view) strongly and curvedly narrowed; transverse diameter of eye 2.7–2.8 × length of temple. Ocelli enlarged, arranged in triangle with base 1.1–1.2 × its sides; POL 0.6–0.8 × Od, 1.0–1.2 × OOL; Od 1.5–1.6 × OOL. Eye high, 1.4–1.5 × higher than broad. Face weakly convex, its width 0.9–1.0 × height of face and clypeus combined, ~ 0.6 × height of eye. Hypoclypeal depression subcircular, its width 1.3–1.4 × distance from edge of depression to eye, ~ 0.5 × minimum width of face. Malar space ~ 0.2 × height of eye, 0.6–0.8 × basal width of mandible. Head below eyes (anterior view) distinctly and almost linearly narrowed. Third and fourth segments of female maxillary palpus weakly widened.

Antenna slender, setiform, 34–36-segmented, about 1.5 × longer than body. Scape relatively long, 1.5–1.8 × longer than maximum width. First flagellomere 2.5–2.8 × longer than its apical width, 1.1–1.2 × longer than second flagellomere. Penultimate flagellomere 3.0–3.3 × longer than wide, 0.6–0.8 × as long as first flagellomere, 0.7–0.8 × as long as apical flagellomere. Apical flagellomere acuminate and with distinct ‘spine’.

Mesosoma 1.4–1.5 × longer than high. Mesoscutum high and curvedly elevated above pronotum (lateral view), approximately as wide as its medial length (dorsal view). Prescutellar depression (scutal sulcus) long, about 0.5 × as long as scutellum, with distinct numerous carinae, partly reticulate between carinae. Precoxal sulcus distinct, relatively wide, short, strongly oblique, crenulate. Metanotum without dorsal tooth (lateral view). Propodeum distinctly and almost straightly oblique in posterior 0.7–0.8.

Wings. Fore wing 2.7–2.8 × longer than its maximum width. Radial vein (r) arising distinctly before middle of pterostigma. Radial (marginal) cell not shortened; metacarp (1-R1) 1.2–1.3 × longer than pterostigma. First radial abscissa (r) 0.7–0.9 × as long as maximum width of pterostigma. Second radial abscissa (3-SR) ~ 2.5 × longer than first abscissa (r) and formed very obtuse angle with it, 0.5 × as long as third radial abscissa (SR1), 1.5–1.6 × longer than first radiomedial vein (2-SR). Second radiomedial (submarginal) cell long, 2.5–2.6 × longer than maximum width, 1.5–1.6 × longer than brachial (subdiscal) cell. First medial abscissa (1-SR+M) weakly sinuate. Recurrent vein (m-cu) weakly curved, 4.5–5.5 × longer than second abscissa of medial vein (2-SR+M), 0.9–1.0 × as long as first radiomedial vein (2-SR). Nervulus (cu-a) weakly curved, weakly oblique, strongly postfurcal, distance (1-CU1) between basal vein (1-M) and nervulus (cu-a) 0.8 × nervulus (cu-a) length; first abscissa of cubital vein (1-CU1) 0.2–0.3 × its second abscissa (2-CU1). In hind wing, radial (marginal) cell weakly widened in basal 0.3, distinctly narrowed towards apex. Radial vein (SR) arising from costal vein (2-SC+R) closely to basal vein (r-m); third abscissa of costal vein (2-SC+R) short, weakly elongate. Nervulus (cu-a) weakly curved. First abscissa of mediocubital vein (M+CU) 1.1–1.3 × longer than second abscissa (1-M).

Legs. Hind femur 4.0–4.2 × longer than wide. Inner longest spur of hind tibia ~ 0.4 × as long as hind basitarsus. Hind tarsus 0.9 × as long as hind tibia. Hind basitarsus 0.5–0.6 × as long as second to fifth segments combined. Second segment of hind tarsus 0.40–0.45 × as long as basitarsus, ~ 0.8 × as long as fifth segment (without pretarsus). Claw without acuminate basal lobe, but strongly expanded basally and distinctly evenly narrowed towards apex.

Metasoma. Length 1.6–2.0 × larger than its maximum width. First tergite short, distinctly and almost evenly widened from base to apex; length of tergite 0.8–0.9 × its posterior width, posterior width 2.3–2.4 × larger than its anterior width. Basal area of first tergite wide, rather long and semi-oval. Second tergite without basal area, its medial length 0.6 × anterior width, 1.6–1.8 × length of third tergite. Suture between second and third tergites deep and crenulate. Ovipositor sheath about as long as first tergite, 1.5–1.6 × longer than hind basitarsus, ~ 0.2 × as long as fore wing.

Sculpture and pubescence. Head mainly smooth; face weakly reticulate, smooth medially. Mesoscutum, scutellum and mesopleuron smooth. Propodeum smooth anteriorly and reticulate in remaining part, with irregular or relatively regular carinae delineated rather narrow areola, its length 2.0–2.3 × maximum width, antero-medial carina distinct and relatively short. Hind leg smooth. First to fourth metasomal tergites entirely and distinctly densely striate with dense and weak reticulation between striae; fifth tergite laterally striate with reticulation, but only reticulate medially.

Colour. Head and mesosoma mainly yellow to brownish yellow, propodeum at least partly fuscous. Metasoma light reddish brown or brownish yellow, whitish yellow laterally and posteriorly, first tergite with large or small dark medial spot. Antenna mainly yellow, evenly and faintly fuscous distally. Palpi whitish. Legs mainly yellow, almost white in their basal quarters. Wing mainly hyaline, with faint obfuscation along veins medially; pterostigma mostly brown, but with small basal yellow spot, costal vein (C+SC+R) mainly yellow.

Male. Unknown.

Host. Unknown.

Distribution. Korean Peninsula.

Etymology. This new species is named in honour of Prof. Sergey Yurievich Storozhenko, the well-known Russian orthopterologist, dedicated in celebration of his upcoming 70th birthday.

Comparative diagnosis. This new species distinctly differs from all known Triraphis species by the absence of the acuminate basal lobe on the tarsal claws.

According to the key of Triraphis species by Chen & He (1997), the new species reminds of T. flavus Chen & He, 1997 from China ( Zhejiang and Guangdong Provinces) ( Chen & He 1997) and the Korean Peninsula (this study), but it differs, beside of the shape of the claw, also by having the head (dorsal view) curvedly narrowed behind eye (almost directly narrowed in T. flavus ), the frons and malar space smooth (with the transverse striae or rugosity in T. flavus ), and the hind femur 4.0–4.2 × longer than wide (5.0 × in T. flavus ).

Figures

FIGURE 4. Triraphis storozhenkoi sp. nov. (female, holotype). (A) Habitus, lateral view. (B) Head, front view. (C) Head, dorsal view. (D) Apical antennomeres. (E) Basal antennomeres. (F) Head and mesosoma, lateral view. (G) Mesosoma, dorsal view. (H) Hind leg. (I) Claw of hind leg.

FIGURE 5. Triraphis storozhenkoi sp. nov. (female, holotype). (A) Wings. (B) Propodeum, metasoma and ovipositor, dorsal view. (C) Metasoma and ovipositor, lateral view.