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 cucphuongensis sp. nov. urn:lsid:zoobank.org:act: EA39FFB2-1727-4E81-9A8D-13920217A0D4 Figs 8 , 25E Etymology Named after the type locality ‘Cuc Phuong National Park’. Type material Holotype VIETNAM • ♂ ; Ninh Binh Province , Cuc Phuong NP ; 20.360° N , 105.599° E ; 23 Aug. 2019 ; R. Matsumoto leg.; VNMN . Paratypes VIETNAM • 1 ♂ ; same locality data as for holotype; 11 Aug. 2016 ; T. Mita leg.; VNMN • 1 ♂ ; same locality data as for holotype; 23 Aug. 2019 ; T. Mita leg.; VNMN • 1 ♂ ; same locality data as for holotype; 22Aug. 2019 ; Y. Komeda leg.; VNMN • 1 ♂ ; same locality data as for holotype; 28 Aug. 2019 ; Y. Hisasue ; VNMN • 1 ♂ ; same locality data as for holotype; 29 Aug. 2019 ; N. Tsuji leg.; VNMN • 1 ♂ ; Bac Kan province , Ba Be NP ; 22.4130° N , 105.6320° E ; 280–600 m a.s.l. ; 19–23 May 2019 ; A. Brunke and H. Schillhammer leg.; FIT ; CNC • 1 ♂ ; Cuc Phuong NP ; 20°20′57.48″ N , 105°35′46.48″ E : 390 m a.s.l. ; 17–20 Jun. 2017 ; A. Brunke leg.; FIT ; CNC • 1 ♂ ; Cuc Phuong NP ; 20°21′14.40″ N , 105°35′9.60″ E ; 390 m a.s.l. ; 17 Jun. 2017 ; A. Brunke leg.; beating ; FIT ; CNC . Description Male ( Fig. 8A ). MEASUREMENTS . Body length 3.2–4.5 mm ; forewing length 3.2–4.2 mm . HEAD . Head ( Fig. 8B–D ) 1.8–2.1 times as long as high, 1.3–1.4 times as long as wide; inner ocular length 0.56 times as long as head width; frontal projection rectangular in frontal view ( Fig. 8B ); frons granulate, with microstriae ( Fig. 8D ); frons with low ridge extending to vertex along inner orbit of eye ( Fig. 8D ); frons with indistinct wrinkles towards median ocellus ( Fig. 8C ); spraclypeal area with transverse carinae ( Fig. 8B ); temple 0.80–1.4 times as long as MOD ( Fig. 8D ); POL 1.1–1.4 times as long as MOD; OOL 1.3–1.5 times as long as MOD; LOL 0.29–0.50 times as long as MOD; behind ocelli without transverse depression ( Fig. 8D ); cervical expansion weakly convex in lateral view ( Fig. 8C ); basal part of cervical expansion parallel in dorsal view ( Fig. 8D ); scape 2.8–3.2 times as long as wide; scape with longitudinal grooves; scape with transparent flange; F1 2.0 times as long as wide; F2 1.8–2.0 times as long as wide; F11 2.9–3.2 times as long as wide; relative length of F1–F11: 1.1: 1.0: 1.0: 1.1: 1.1: 1.1: 1.0: 1.1: 1.0: 1.0: 1.3. Fig. 8. Loboscelidia cucphuongensis sp. nov. , holotype, ♂ (VNMN). A . Lateral habitus. B . Head , frontal view. C . Head , dorsal view. D . Head , lateral view. E . Pronotum, dorsal view. F . Forewing. G . Mesosoma, dorsal view. Scale bars: A, C–G = 0.5 mm; B = 0.2 mm. MESOSOMA . Pronotum 0.85–0.86 times as long as posterior width of pronotum ( Fig. 8E ); posterior width of pronotum 1.2–1.6 times as wide as anterior width and as wide as head width; dorsolateral surface of pronotum carinate ( Fig. 8A ); notauli of scutum parallel, not reaching posterior margin ( Fig. 8G ); scutellum rugose, with lateral carina ( Fig. 8G ); scrobal sulcus present, strongly depressed ( Fig. 8A ); metanotum with four ridges, 0.39–0.40 times as long as scutellum ( Fig. 8G ); propodeal angle strongly developed; propodeum without transverse carina above foramen. WINGS . Forewing ( Fig. 8F ) with M curved; cu-a 0.17–0.33 times as long as R; A extending half of Cu+M; R1 0.33 times as long as R; Rs 2.6–3.2 times as long as R. LEGS . Tibiae carinate; flange on forefemur 0.43–0.52 times longer, 0.67–0.90 times wider than tubular part of forefemur; flange on foretibia 0.44–0.60 times longer, 0.27–0.67 times wider than tubular part of foretibia; flange on midfemur 0.43–0.52 times longer, 0.32–0.88 times wider than tubular part of midfemur; flange on midtibia 0.56–0.64 times longer, 0.58–0.60 times wider than tubular part of midtibia; hindcoxa 2.0 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 carinate; flange on hindfemur 0.63–0.64 times longer, 0.76–1.1 times wider than tubular part of hindfemur; flange on hindtibia 0.74–0.77 times longer, 1.0–1.7 times as wide as tubular part of hindtibia. PILOSITY . Lower gena with sparse decumbent simple and cuneate setae ( Fig. 8C ); scape with sparse decumbent and suberect simple setae; pedicel with sparse suberect simple setae; forefemur with sparse decumbent simple setae; midtrochanter with sparse decumbent cuneate setae; hindcoxa with sparse decumbent cuneate setae. COLORATION . Body reddish brown; antenna reddish brown; legs reddish brown; flanges yellowish brown; ribbon-like setae yellow brown. Female Unknown. Distribution Vietnam (Northern Vietnam ) ( Fig. 26 ). Remarks Loboscelidia cucphuongensis sp. nov. resembles L. cuneata sp. nov. , L. maai (Lin, 1964) , L. nitidula Kimsey, 2012 and L. pallarela sp. nov. in having a parallel cervical expansion. However, L. cuchphuongensis sp. nov. can be distinguished by the following characteristics: forefemur bearing simple setae (with cuneate setae in L. cuneata sp. nov. ); R1 less than 0.5 times as long as R (more than 0.5 times as long as R in other four species); cu-a less than 0.5 times as long as R (as long as R in L. maai and L. nitidula ); and Rs about 2.5 times as long as R (more than 3. 0 times as long as R in L. nitidula and L. pallalela sp. nov. ).