Taxonomic revision of the genus Loboscelidia Westwood, 1874 (Hymenoptera: Chrysididae: Loboscelidiinae) from Vietnam Author Hisasue, Yu D2E20D5E-B406-4169-9B1D-A4D0078D06EE Entomological Laboratory, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, Fukuoka, 819 - 0395, Japan. & Ogasawara Division of Japan Wildlife Research Center, Okumura, Chichijima, Ogasawara, Tokyo 100 - 2101, Japan. hybrizonist@gmail.com Author Pham, Thai-Hong B226B19B-509B-4878-B2FD-8505B688A1D2 Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology (VAST), 321 Huynh Thuc Khang, Hue, Vietnam. & Graduate School of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam. phamthai@vnmn.vast.vn Author Mita, Toshiharu 6CC49F2C-C91C-463C-9C2D-8269588E1A6A Entomological Laboratory, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819 - 0395 Japan. t3mita@agr.kyushu-u.ac.jp text European Journal of Taxonomy 2023 2023-08-04 887 1 1 68 http://zoobank.org/788ae14a-0698-4c42-819c-bc2412f76fca journal article 60724 10.5852/ejt.2023.887.2203 e07425be-9a2c-4459-aa8b-b51c90eafc0f 2118-9773 8222523 788AE14A-0698-4C42-819C-BC2412F76FCA Loboscelidia komedai sp. nov. urn:lsid:zoobank.org:act: 7D4199E6-8EAF-4828-B589-E46ABA1BB314 Figs 15 , 25K Etymology The specific name is in honor of Dr Yoto Komeda who collected the holotype of this new species. Type material Holotype VIETNAM • ♂ ; Thua Thien Hue Province , Bach Ma NP , rhododendron trail; 16.192° N , 107.849° E ; 3 Aug. 2016 ; Y. Komeda leg.; VNMN . Paratypes VIETNAM • 1 ♂ , same locality data as for holotype; 3–6 Aug. 2016 ; YPT ; VNMN • 1 ♂ ; Thua Thien Hue Province , Bach Ma NP , phaesant trail; 16.231° N , 107.852° E ; 4 Aug. 2016 ; T. Mita leg.; VNMN . Description Male ( Fig. 15A ) MEASUREMENTS . Body length 3.9–4.1 mm ; forewing length 3.9–4.1 mm . HEAD . Head ( Fig. 15B–D ) 1.8–1.9 times as long as high, 1.3 times as long as wide; inner ocular length 0.55–0.61 times as long as head width; frontal projection rectangular in frontal view ( Fig. 15B ); apical margin of frontal projection straight ( Fig. 15C ); frons granulate ( Fig. 15C ); frons with low ridge extending from vertex along inner orbit of eye; frons with indistinct carina towards median ocellus ( Fig. 15C ); spraclypeal area with transverse carinae ( Fig. 15B ); temple 0.43–0.86 times as long as MOD ( Fig. 15C ); POL 1.5–1.6 times as long as MOD; OOL 1.3–2.0 times as long as MOD; LOL 0.29–0.57 times as long as MOD; behind ocelli without transverse depression ( Fig. 15C ); cervical expansion weakly convex in lateral view ( Fig. 15C ); basal part of cervical expansion constricted weakly in dorsal view ( Fig. 15C ); scape 2.5–2.6 times as long as wide; scape with longitudinal grooves; F1 1.6–2.6 times as long as wide; F2 1.5–2.8 times as long as wide; F11 3.4–3.8 times as long as wide; relative length of F1–F11: 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 1.4. MESOSOMA . Pronotum 0.81–0.83 times as long as posterior width of pronotum ( Fig. 15F ); posterior width of pronotum 1.4–1.7 times as wide as anterior width and 1.1–1.2 times as wide as head width; dorsolateral surface of pronotum carinate ( Fig. 15A ); notauli of scutum slightly curved, reaching posterior margin ( Fig. 15G ); scutellum punctured and rugose; scrobal sulcus present, weakly depressed ( Fig. 15G ); metanotum with medial ridge ( Fig. 15G ), 0.39–0.46 times as long as scutellum; propodeal angle weakly developed ( Fig. 15G ); upper area of propodeum without transverse carina; propodeum without transverse carina above foramen. Fig. 15. Loboscelidia komedai sp. nov. , holotype, ♂ (VNMN). A . Lateral habitus. B . Head , dorsal view. C . Head , frontal view. D . Head , lateral view. E . Forewing. F . Pronotum, dorsal view. G . Mesosoma, dorsal view. Scale bars = 0.5 mm. WINGS . Forewing ( Fig. 15E ) with M curved; cu-a 0.72–0.80 times as long as R; A extending half of Cu+M; R1 0.60–0.67 times as long as R; Rs 2.7–3.1 times as long as R. LEGS . Tibiae carinate; flange on forefemur 0.64–0.66 times longer, 0.70–0.92 times wider than tubular part of forefemur; flange on foretibia 0.50–0.63 times longer, 0.63–0.73 times wider than tubular part of foretibia; flange on midfemur 0.71–0.83 times longer, 0.75–1.0 times wider than tubular part of midfemur; flange on midtibia 0.58–0.68 times longer, 0.56–0.80 times wider than tubular part of midtibia; hindcoxa 1.8 times as long as hind trochanter; hindcoxa dorso-laterally carinate; basal part of hindfemur strongly producing; hindfemur basally stout, apparently wider than distal part; ventral margin of hindfemur flat; outer surface of hindfemur smooth; flange on hindfemur 0.77–0.86 times longer, 0.79–0.9 times wider than tubular part of hindfemur; outer surface of hindtibia smooth; flange on hindtibia 0.67–0.75 times longer, 1.5–1.7 times wider than tubular part of hindtibia; median tooth of tarsal claw extending half of tarsal claw. PILOSITY . Spraclypeal area with erect simple setae ( Fig. 15B ); lower gena with sparse decumbent simple setae; scape with sparse decumbent simple setae; dorsal and lateral surfaces of pronotum with sparse decumbent cuneate setae ( Fig. 15F ); forefemur with sparse decumbent and suberect simple setae; midfemur with sparse decumbent simple setae; midtibia with sparse decumbent simple setae; hindfemur with sparse decumbent simple setae; hindtibia with sparse decumbent simple setae; hindcoxa with sparse decumbent simple setae. COLORATION . Body reddish brown to blackish brown; scutum, scutellum and metanotum blackish brown; ribbon-like setae yellowish brown; flanges yellowish brown. Female Unknown. Distribution Vietnam (Central Vietnam ) ( Fig. 28 ). Remarks This species resembles L. sarawakensis Kimsey, 1988 in having a darker body color, scrobal sulcus, and scape more than twice as long as wide. However, it can be distinguished by the following combination of characteristics: rectangular frontal projection ( L. sarawakensis triangular); transverse depression absent behind ocelli ( L. sarawakensis with transverse depression).