Apsilocera triapitzini Tselikh, Haas & Ku 2024, sp. nov.

Apsilocera triapitzini Tselikh, Haas & Ku sp. nov. Figs 81–88, 98 Type material. Holotype • female, Republic of Korea: “ Gyeongsangnam-do, Goseong-gun, Hail-myeon, Suyang-ri, 34°58'34.8"N, 128°12'08.3"E, 18.VI.2022, coll. E. Tselikh ” (NIBR). Paratypes • 1 male, same labels as holotype (SMNE) • 1 female, “ Gyeongsangnam-do, Geochang-gun, Mari-myeon, Yeongseung-ri, 35.714060N, 127.876007E, 06.VII.2023, coll. E. Tselikh ” (ZISP) • 1 female, “ Russia, Primirskii Reg., Lazovsky Reserve, Preobrazhenie Vill., 18–19.VIII.2010, coll. E. Tselikh ” (ZISP) • 1 female (SMNS_Hym_T 00798), “ Sweden, Mörbylånga, Kalkstad (# 114 / 2014), mixed deciduous forest, 27.VI–30.VII.2014, Malaise trap, 56.609569N, 16.503726E, coll. M. Jaschhof, C. Jaschhof ”, Sample ID: 48265 (SMNS) • 1 female (NHRS-HEVA 000022838), “ Sweden Öl, Mörbylånga kommun, Västerstads almlunds naturreservat., Old elm forest (3002 Trap ID, 3053 Event ID), 10.VI-9.VII.2014, Malaise trap, 56.427648N, 16.421110E, leg. Swedish Malaise Trap Project ”, Sample ID: SMNS_50682 (NRM). Description. Female. Body length 1.20–1.61 mm; fore wing length 1.05–1.36 mm. Coloration. Head black; antenna with scape yellowish brown; pedicel, anelli, F 1 – F 6, and clava brown. Mesosoma black, but propodeum dorsally dark blue with metallic diffuse luster. Fore coxae metallic blue, mid coxae yellowish brown, hind coxae basally metallic blue, apically yellowish brown; all femora and tibiae yellowish brown, all tarsi yellow. Fore wing hyaline, venation yellowish brown. Metasoma dorsally brown with metallic green diffuse coppery luster, laterally and ventrally yellowish brown; ovipositor sheaths brown. Sculpture. Head grossly reticulate; clypeus radially striate, but near clypeal margin smooth. Mesosoma grossly reticulate; propodeum alutaceous. Metasoma weakly alutaceous and shiny. Head. Head in dorsal view 2.15–2.32 × as broad as long and 1.24–1.34 × as broad as mesoscutum; in frontal view 1.37–1.52 × as broad as high. POL 1.22–1.50 × as long as OOL. Eye height 1.24–1.33 × eye length and 1.94–2.05 × as long as malar space. Distance between antennal toruli and lower margin of clypeus 1.87–2.21 × distance between antennal toruli and median ocellus. Antenna with scape 0.90–0.97 × as long as eye height and 1.12–1.28 × as long as eye length; pedicel 1.33–1.45 × as long as broad; combined length of pedicel and flagellum 0.99–1.15 × breadth of head; F 1 – F 4 longer than broad, F 5, F 6 subsquare, with single row of sensilla; clava 2.70–3.23 × as long as broad, with small micropilose area on each C 3 and C 4. Clypeal margin produced and emarginate medially. Mandible formula 3: 4. Mesosoma. Mesosoma 1.30–1.42 × as long as broad. Scutellum arched, 0.77 × as long as broad, frenal area indistinct. Propodeum 0.39–0.50 × as long as scutellum. Fore wing 2.02–2.09 × as long as its maximum width; basal cell bare; basal vein pilose; speculum partly closed below; M 0.93–1.13 × as long as PM and 2.20–2.38 × as long as S, stigma small. Metasoma. Metasoma 1.53–1.77 × as long as broad and 1.22–1.35 × as long as mesosoma. Petiole strongly transverse. Ovipositor sheath projecting slightly beyond apex of metasoma. Male. Body length 0.95 mm; fore wing length 0.90 mm. Eye height 2.46 × as long as malar space. Distance between antennal toruli and lower margin of clypeus 3.16 × distance between antennal toruli and median ocellus. Antenna with pedicel 1.60 × as long as broad; clava 5.60 × as long as broad; combined length of pedicel and flagellum 1.29 × breadth of head. Metasoma 2.30 × as long as broad and 0.97 × as long as mesosoma. Otherwise, similar to female. Etymology. The species is named in honor of the prominent entomologist, an expert on Encyrtidae (Hymenoptera), Dr., Prof. Vladimir A. Trjapitzin. Distribution. Russia, Republic of Korea, Sweden. Comments. Apsilocera triapitzini sp. nov. belongs to a group of species that have a vertex with regular sculpture. This species is very similar to A. bramleyi; the differences between these species are given in the key.