Loboscelidia vang Hisasue & Pham & Mita 2023, sp. nov.

Loboscelidia 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. Tsujii leg.; VNMN. Paratype VIETNAM • 1 ♂; same collection data as for holotype but 9 Jul. 2014; T. Mita leg.; 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, 1922 in 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).Published as part of Hisasue, Yu, Pham, Thai-Hong & Mita, Toshiharu, 2023, Taxonomic revision of the genus Loboscelidia Westwood, 1874 (Hymenoptera: Chrysididae: Loboscelidiinae) from Vietnam, pp. 1-68 in European Journal of Taxonomy 887 (1) on pages 51-54, DOI: 10.5852/ejt.2023.887.2203, http://zenodo.org/record/822252