Loboscelidia bachmaensis, Hisasue & Pham & Mita, 2023

Hisasue, Yu, Pham, Thai-Hong & Mita, Toshiharu, 2023, Taxonomic revision of the genus Loboscelidia Westwood, 1874 (Hymenoptera: Chrysididae: Loboscelidiinae) from Vietnam, European Journal of Taxonomy 887 (1), pp. 1-68 : 7-9

Loboscelidia bachmaensis sp. nov.

urn:lsid:zoobank.org:act:45AE8FE5-9A36-4E8C-9E81-AD92B60E90D0

Figs 4 , 25A

Etymology

The species epithet is named after the type locality, “Bạch Mã”.

Type material

Holotype VIETNAM • ♂; Thua Thien Hue Province, Bach Ma NP , 19 km point; 16.192° N, 107.849° E; 3–6 Aug. 2016; T. Mita and Y. Komeda leg.; YPT; VNMN.

Paratypes VIETNAM • 2 ♂♂; same collection data as for holotype; VNMN .

Description

Male ( Fig. 4A )

MEASUREMENTS. Body length 2.7 mm; forewing length 2.7 mm.

HEAD. Head ( Fig. 4B–D ) 1.5 times as long as high; 1.2 times as long as wide; inner ocular length 0.66 times as long as head width; frontal projection rectangular in frontal view ( Fig. 4B ); apical margin of frontal projection straight; lower part of frontal projection shorter than upper part ( Fig. 4D ); frons granulate, finely microstriate ( Fig. 4C ); frons with low ridge extending from median ocellus along inner orbit of eye ( Fig. 4C ); spraclypeal area with transverse carinae ( Fig. 4B ); temple 0.80 times as long as MOD ( Fig. 4C ); POL 0.8 times as long as MOD; OOL 1.2 times as long as MOD; LOL 0.2 times as long as MOD; behind ocelli without transverse depression ( Fig. 4C ); cervical expansion convex in lateral view ( Fig. 4D ); basal part of cervical expansion constricted weakly in dorsal view ( Fig. 4C ); scape 2.1 times as long as wide; scape with longitudinal grooves; F1 1.4 times as long as wide; F2 1.6 times as long as wide; F11 3.2 times as long as wide; relative length of F1–F11: 1.0: 1.1: 1.2: 1.2: 1.2: 1.2: 1.3: 1.3: 1.3: 1.3: 1.8.

MESOSOMA. Pronotum 0.81 times as long as posterior width of pronotum ( Fig. 4F ); posterior width of pronotum 1.2 times as wide as anterior width and as wide as head width; dorsolateral surface of pronotum carinate ( Fig. 4A ); notauli of scutum slightly convergent to posterior, not reaching posterior margin ( Fig. 4F ); median part of scutellum polished ( Fig. 4E ); posterior part of scutellum rugose; scrobal sulcus present, weakly depressed ( Fig. 4A ); metanotum with three ridges; metanotum 0.39 times as long as scutellum ( Fig. 4E ); propodeal angle weakly developed; propodeum without transverse carina above foramen.

WINGS. Forewing with M curved ( Fig. 4G ); cu-a 0.37 times as long as R; A extending half of Cu+M; R1 0.67 times as long as R; Rs 2.8 times as long as R.

LEGS. Tibiae smooth; flange on forefemur 0.61 times longer, 0.89 times wider than tubular part of forefemur; flange on foretibia 0.42 times longer, 0.50 times wider than tubular part of foretibia; flange on midfemur 0.76 times longer, 0.70 times wider than tubular part of midfemur; flange on midtibia 0.76 times longer, 0.67 times wider than tubular part of midtibia; 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 0.74 times longer, 1.2 times wider than tubular part of hindfemur; outer surface of hindtibia smooth; flange on hindtibia 0.79 times longer, 2.0 times wider than tubular part of hindtibia; hindtarsal claw with tooth reaching ⅓ of hindtarsal claw.

PILOSITY. Lower gena with sparse decumbent simple and cuneate setae ( Fig. 4D ); scape with sparse decumbent simple and simple setae; pedicel with sparse decumbent cuneate setae; dorsal surface of pronotum with sparse decumbent cuneate setae ( Fig. 4F ); forefemur with sparse decumbent and suberect simple setae; hindtibia with sparse decumbent cuneate setae.

COLORATION. Body reddish brown; antenna reddish brown; legs reddish brown; flanges yellowish brown; ribbon-like setae white.

Female

Unknown.

Distribution

Vietnam (Central Vietnam) ( Fig. 26 ).

Remarks

This species closely resembles L. vietnamensis sp. nov. in having the following characteristics: weakly convex cervical expansion, F11 3.0 times as long as wide, and a polished scutellum. However, L. bachmaensis sp. nov. can be distinguished by the following characteristics: frontal projection equal to shorter than upper part in lateral view (longer than above in L. vietnamensis sp. nov.); temple 0.80 times as long as MOD (0.3–0.6 times longer than in L. vietnamensis sp. nov.); POL shorter than MOD (longer than MOD in L. vietnamensis sp. nov.); tooth of hindtarsal claw reaching ⅓ of hindtarsal claw (less than ¼ in L. vietnamensis sp. nov.).

Figures

Fig. 4. Loboscelidia bachmaensis sp. nov., holotype, ♂ (VNMN). A. Lateral habitus. B. Head, frontal view. C. Head, dorsal view. D. Head, lateral view. E. Mesosoma, dorsal view. F. Pronotum, dorsal view. G. Forewing. Scale bars: A, G = 0.5 mm; B–F = 0.2 mm.

Fig. 25. Hind tarsal claw of Loboscelidia Westwood, 1874. A. L. bachmaensis sp. nov. B. L. barbata sp. nov. C. L. cilia sp. nov. D. L. convexa sp. nov. E. L. cucphuongensis sp. nov. F. L. cuneata sp. nov. G. L. do sp. nov. H. L. flavipes sp. nov. I. L. fulgens Kimsey, 2012. J. L. glabra sp. nov. K. L. komedai sp. nov. L. L. mediata sp. nov. M. L. parallela sp. nov. N. L. piriformis sp. nov. O. L. squamosa sp. nov. P. L. vang sp. nov. Q. L. vietnamensis sp. nov.

Fig. 26. Distribution map of Loboscelidia spp. in Vietnam. L. asiana Kimsey, 1988 (read circle). L. bachmaensis sp. nov. (dark blue circle). L. barbata sp. nov. (yellow circles). L. cilia sp. nov. (green circle). L. convexa sp. nov. (pink circle). L. cucphuongensis sp. nov. (gray circles).