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 parallela sp. nov. urn:lsid:zoobank.org:act: D512C463-0D4E-4D9F-98A2-3EC86F9D3141 Figs 2B , 18 , 25M Etymology Named after the Latin ‘ parallela ’, meaning ‘parallel’, referring to the parallel cervical expansion. Type material Holotype VIETNAM • ♂ ; Bac Giang Province , Tay Yen Tu NR ; 21°10′52.33″ N , 106°43′24.3″ E ; 9 Jul. 2014 ; T. Mita leg.; VNMN . Paratype VIETNAM • 1 ♂ ; same collection data as for holotype; VNMN . Description Male ( Fig. 18A ) MEASUREMENTS . Body length 3.2 mm ; forewing length 3.2 mm . HEAD . Head ( Fig. 18B–D ) 1.9 times as long as high, 1.3 times as long as wide; inner ocular length 0.61 times as long as head width; frontal projection rectangular in frontal view ( Fig. 18B ); apical margion of frontal projection depressed ( Fig. 18C ); frons granulate, with microstriae ( Fig. 18C ); frons with low ridge extending from vertex along inner orbit of eye ( Fig. 18C ); spraclypeal area with transverse carinae ( Fig. 18B ); temple as long as MOD ( Fig. 18C ); POL 1.2 times as long as MOD; OOL 1.7 times as long as MOD; LOL 0.2 times as long as MOD; behind ocelli without transverse depression ( Fig. 18C ); cervical expansion flattened in lateral view ( Fig. 18D ); basal part of cervical expansion parallel in dorsal view ( Fig. 18C ); scape 3.1 times as long as wide; scape with longitudinal grooves; scape with transparent flange; F1 2.0 times as long as wide; F2 1.8 times as long as wide; F11 3.3 times as long as wide; relative length of F1–F11: 1.2: 1.0: 1.1: 1.0: 1.0: 0.9: 1.1: 1.1: 1.1: 1.0: 1.5. MESOSOMA . Pronotum 0.78 times as long as posterior width of pronotum ( Fig. 18E ); posterior width of pronotum 1.4 times as wide as anterior width and 1.1 times as wide as head width; dorsolateral surface of pronotum carinate ( Fig. 18A ); notauli of scutum slightly curved, reaching posterior margin ( Fig. 18F ); scutellum polished, with lateral carina ( Fig. 18F ); apico-lateral area of scutellum with longitudinal grooves ( Fig. 18F ); metanotum with two ridges ( Fig. 18F ); scrobal sulcus present, weakly depressed ( Fig. 18A ); metanotum 0.51 times as long as scutellum ( Fig. 18F ); propodeal angle weakly developed; upper area of propodeum without transverse carina; propodeum without transverse carina above foramen. WINGS . Forewing ( Fig. 18G ) with M curved; cu-a 0.50 times as long as R; A extending half of Cu+M; R1 0.83 times as long as R; Rs 3.2 times as long as R. LEGS . Tibiae carinate; flange on forefemur 0.49 times longer, 0.85 times wider than tubular part of forefemur; flange on foretibia 0.35 times longer, 0.50 times wider than tubular part of foretibia; flange on midfemur 0.53 times longer, 0.85 times wider than tubular part of midfemur; flange on midtibia 0.59 times longer, 0.29 times wider than tubular part of midtibia; hindcoxa dorso-laterally carinate; basal part of hindfemur producing; hindfemur basally stout, apparently wider than distal part; ventral margin of hindfemur flat; flange on hindfemur 0.61 times longer, 0.80 times wider than tubular part of hindfemur; outer surface of hindtibia smooth; flange on hindtibia 0.68 times longer, 1.2 times wider than tubular part of hindtibia. Fig. 18. Loboscelidia parallela sp. nov. , holotype, ♂ (VNMN). A . Lateral habitus. B . Head , dorsal view. C . Head , frontal view. D . Head , lateral view. E . Pronotum, dorsal view. F . Mesosoma, dorsal view. G . Forewing. Scale bars: A, E–G = 0.5 mm; B–D = 0.2 mm. PILOSITY . Lower gena with sparse decumbent cuneate setae ( Fig. 18D ); scape with sparse decumbent and suberect simple setae; forecoxa with sparse decumbent cuneate setae; foretibia with sparse decumbent and suberect simple and cuneate setae; midcoxa with sparse decumbent cuneate setae; midfemur and midtibia with sparse decumbent and suberect simple and cuneate setae; hindcoxa with sparse decumbent cuneate setae; hindfemur and hindtibia with sparse decumbent and suberect simple and cuneate setae. COLORATION . Body reddish brown; antenna reddish brown; legs yellowish brown; ribbon-like setae whitish yellow. Female Unknown. Distribution Vietnam (Northern Vietnam ) ( Fig. 28 ). Remarks Loboscelidia parallela sp. nov. resembles L. cuneata sp. nov. and L. halimunensis ; however, it can be distinguished by the following characteristics: femora with simple setae (with cuneate setae in L. cuneata sp. nov. ); flange of forefemur 0.85 times as wide as the tubular part (0.25 times as wide as the tubular part in L. cuneata sp. nov. ); flange of foretibia 0.50 times as wide as the tubular part (1.5 times as wide as the tubular part in L. cuneata sp. nov. ); and curved M vein (straight in L. halimunensis ).