Taxonomic revision of the genus Loboscelidia Westwood, 1874 (Hymenoptera: Chrysididae: Loboscelidiinae) from Vietnam Hisasue, Yu Pham, Thai-Hong Mita, Toshiharu European Journal of Taxonomy 2023 2023-08-04 887 1 1 68 Hisasue & Pham & Mita, 2023 Hisasue & Pham & Mita 2023 [635,855,1496,1523] Insecta Chrysididae Loboscelidia Animalia Hymenoptera 50 51 Arthropoda species vang sp. nov.   urn:lsid:zoobank.org:act: 7FEE8B5C-8DED-4602-9418-E60F91693BC3  Figs 23, 25P    Etymology The specific name is derived from the Vietnamese word ‘vàng’ meaning ‘yellow’, referring to the yellowish body color.    Type material    Holotype VIETNAM• ♂; Bac Giang Province, Tay Yen Tu NR; 21°10′52.33″ N, 106°43′24.3″ E;  8 Jul. 2014; K. Tsujiileg.; VNMN.    Paratype VIETNAM• 1 ♂; same collection data as for holotype but  9 Jul. 2014; T. Mitaleg.; VNMN.    Description  Male( Fig. 23A)  MEASUREMENTS. Body length 3.1 mm; forewing length 3.2 mm.  HEAD. Head ( Fig. 23B–D) 1.8 times as long as high, as long as wide; inner ocular length 0.61 times as long as head width; frontal projection triangular in frontal view ( Fig. 23B); apical margion of frontal projection depressed ( Fig. 23C); frons polished and unpunctured; frons with low ridge extending from vertex along inner orbit of eye ( Fig. 23C); frons with distinct carinae towards median ocellus ( Fig. 23C); frons with indistinct frontal line ( Fig. 23C); spraclypeal area with transverse carinae ( Fig. 23B); temple 1.6 times as long as MOD ( Fig. 23C); POL 1.4 times as long as MOD; OOL 0.96 times as long as MOD; LOL 0.40 times as long as MOD; behind ocelli with transverse depression ( Fig. 23C); cervical expansion strongly convex in lateral view ( Fig. 23D); basal part of cervical expansion strongly constricted in dorsal view ( Fig. 23C); scape 3.8 times as long as wide; scape with longitudinal grooves; scape with transparent flange; F1 1.8 times as long as wide; F2 1.7 times as long as wide; F11 3.5 times as long as wide; relative length of F1–F11: 1.0: 1.2: 1.1: 1.1: 1.1: 1.1: 1.1: 1.2: 1.2: 1.2: 1.7.  MESOSOMA. Pronotum 0.81 times as long as posterior width of pronotum ( Fig. 23F); posterior width of pronotum 1.5 times as wide as anterior width and as wide as head width; dorsolateral surface of pronotu carinate ( Fig. 23A); notauli of scutum parallel, reaching posterior margin ( Fig. 23G); scutellum polished and punctured ( Fig. 23G); apico-lateral area of scutellum without longitudinal grooves ( Fig. 23G); metanotum with medial ridge ( Fig. 23G); scrobal sulcus present, strongly depressed ( Fig. 23A); metanotum 0.52 times as long as scutellum ( Fig. 23G); propodeal angle weakly developed; propodeum without transverse carina above foramen.  WINGS. Forewing ( Fig. 23E) with M straight; cu-a absent; A extending Cu+M; R1 0.44 times as long as R; Rs 1.9 times as long as R.  LEGS. Tibiae carinate; flange on forefemur 0.53 times longer, 0.85 times wider than tubular part of forefemur; flange on foretibia 0.40 times longer, 0.43 times wider than tubular part of foretibia; flange on midfemur 0.49 times longer, as wide as tubular part of midfemur; flange on midtibia 0.72 times longer, 0.25 times wider than tubular part of midtibia; hindcoxa 2.2 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 0.43 times longer, 0.83 times wider than tubular part of hindfemur; flange on hindtibia 0.57 times longer, 0.55 times wider than tubular part of hindtibia; hind tarsal claw with one median tooth, reaching tarsal claw ( Fig. 25).  PILOSITY. Lower gena with sparse suberect simple setae ( Fig. 23D); cervical expansion without setae ( Fig. 23C); scape with sparse suberect simple setae; pedicel with sparse suberect simple setae; lateral surface of pronotum with sparse suberect simple setae ( Fig. 23A); forecoxa and foretrochanter with sparse suberect simple setae; foretrochanter with sparse suberect simple setae; midcoxa and midtrochanter with sparse suberect simple setae; midfemur and midtibia with sparse decumbent and suberect simple and cuneate setae; hindcoxa with sparse decumbent simple setae; hindtrochanter with sparse suberect simple setae; hindfemur and hindtibia with sparse decumbent and suberect simple and cuneate setae.  COLORATION. Body yellowish brown; antenna yellowish brown; legs yellowish brown; flanges yellowish brown; ribbon-like setae whitish yellow.  Female Unknown.    Distribution  Vietnam(Northern Vietnam) ( Fig. 29).    Remarks   Loboscelidia vang sp. nov.resembles  L. collaris Fouts, 1922in having the following characteristics: yellowish brown body color; basal part of cervical expansion strongly constricted in dorsal view; and carinated dorso-lateral surface of pronotum. However, it can be distinguished by the following characteristics: rectangular frontal projection (triangular in  L. collaris); scape more than 3.5 times as long as wide (less than 3.0 times as long as wide in  L. collaris); F1 and F2 less than twice as long as wide (more than twice as long as wide in  L. collaris); temple longer than MOD (shorter than MOD in  L. collaris); and straight M vein (curved in  L. collaris). 4170525302 2014-07-08 VNMN K. Tsujii Vietnam 21.181202 Tay Yen Tu NR 1 106.72342 50 51 1 1 Bac Giang Province holotype 4170525308 2014-07-09 VNMN T. Mita Vietnam 21.181202 VIETNAM 1 106.72342 50 51 1 1 Bac Giang paratype