Trirogma kohima Girish Kumar and Sheela 2018

Trirogma kohima Girish Kumar and Sheela, 2018, new record for China Figs 3A–I, 4A–I Trirogma kohima Girish Kumar and Sheela, 2018: 114, ♂. Holotype: ♂, India: Nagaland: Kohima (Zoological Survey of India, Kolkata) Material examined. 1♂, China: Zhejiang, Lanxi, 29°12N, 119°27′E, 1985.VIII.4–5, Xuexin Chen; 1♂, China: Zhejiang, Huangyan, 28°40′N, 121°15′E, 1965.VIII.5, Junhua He & Dengdi Jin; 1♂, China: Guangdong, Conghua, Liuxi River, 23°48′N, E 113°46′E, 2002. VI.24–28, Zaifu Xu; 1♂, China: Zhejiang, Jinyun, 28°41′N, 120°6′E, 1987. VI.1, Sichun Li; 2♂ 2♀, China: Yunnan, Dehong, Yinjiang, Mangyun, 24°31′N, 97°45′E, 2024. V.27, Rongfu Chen; 1♂, China: Yunnan, Honghe, Yuanyang, 23°14′N, 102°51′E, 2007.VII.24, Bing Chen; 1♀, China: Zhejiang, Songyang, 23°27′N, 119°29′E, 1983.IV.7, Hanlin Chen; 1♀, China: Yunnan, Dehong, Yinjiang, Taiping, 24°39′N, 97°51′E, 2023. VII.27. Description. Female (First description). Body length 16–26 mm. Bright metallic blue and purple luster (Fig. 3A). Mandible black, yellowish brown at apex; antennae black except scape metallic blue; wings hyaline, veins and stigma dark brown; legs metallic blue, claws reddish brown. Body with white, long setae, dense on clypeus, gena and mesosoma ventrally. Head. Mandible sharp at apex, with four small, blunt, inner teeth (Fig. 3B). Clypeus approximately triangular, middle with a posterior groove, anterior margin arc-shaped convex and slightly upturned medially (Fig. 3B). Frons with dense, irregular reticulation; frontal lobe ‘U’ shaped, frons immediately above platform with a deep, transverse, bisinuate groove; frontal line short, incomplete, slightly impressed (Fig. 3B). Ratio of ID: F1 = 29: 32. Ocelli in triangle with a deep posterior groove. Vertex and gena with small to midsize, sparse punctures (Figs 3B, C). Antennae twelve segments, ratio of F1: F2+F3 = 31: 52. Mesosoma. Pronotum with midsize, sparse punctures; posterolateral tubercles of pronotal collar slightly raised, short cone-shaped (Fig. 3D); propleurum with sparse, fine punctures and several distinct, long and oblique carinae on each side (Fig. 3E); prosternum with midsize, sparse punctures. Scutum median area with dense, large punctures, each sides with dense, irregular reticular ridges, slightly raised medially; notaulus complete, crenulate (Fig. 3D). Mesopleuron and mesosternum with dense, small, irregular punctures; area close to omaulus with parallel groove, crenulate; upper mesopleural groove crenulate (Fig. 3F); sternaulus present, not crenulate. Scutellum not elevated, with small to midsize, dense punctures (Fig. 3D). Metanotum with small, dense punctures. Propodeal enclosure approximately triangular, shiny and smooth, medially with two strong, longitudinal carinae, laterally with several strong, oblique, longitudinal ruga (Fig. 3G). Posterior surface of propodeum with distinct, irregular reticulation. Lateral surface of propodeum with several short, sturdy, oblique longitudinal ruga (Fig. 3F). Wings and legs. Fore wings with three submarginal cells, vein M+Cu diverging before crossvein cu-a; hind wings with vein M+Cu diverging after crossvein cu-a (Fig. 3H). Hind coxa with a small tubercle dorsally. Metasoma. T1–T3 with fine and dense punctures; T4–T6 alutaceous. S2 with a bisinuate groove interrupted by median tubercle, not crenulate (Fig. 3I). Male. Differs from female as follows: Body length 12 mm. Mandible with two inner teeth, mid tooth large, sharp, other one blunt and small (Fig. 4B). Clypeus approximately trapezoidal, anterior margin slightly emarginated medially;transverse bisinuate groove deeper(Fig.4B).Ratio of ID:F1 =23:19.Gena with coarser punctures.Antennae with thirteen segments, ratio of F1: F2+F3 = 10: 21. Scutum slightly concave medially and raised laterally (Fig. 4D); sternaulus present, crenulate (Fig. 4F). Scutellum slightly elevated, with a cone-like projection at middle (Fig. 4D). Fore wings with vein M+Cu diverging at crossvein cu-a (Fig. 4H). Bisinuate groove interrupted by median tubercle on S2 crenulate (Fig. 4I). T1–T3 with midsized dense punctures. Remarks. This study complements the characteristics that distinguish this species from other species of this genus: scutum with dense, large punctures medially, each sides with dense, irregular, reticular ridges. But the roughness of the entire scutum is almost the same in other species.