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

Loboscelidia piriformis sp. nov.

urn:lsid:zoobank.org:act: BFF0E445-90C3-4CFB-B3FE-5C6E866795DC

Figs 20, 25N

Named after the Latin ‘ piri ’, meaning ‘pear’, and ‘formis’, meaning ‘shape’, referring to the head shape.

Holotype VIETNAM • ♀; Thua Thien Hue Province, Bach Ma NP, 19 km point; 16.198° N, 107.860° E; 3–6 Aug. 2016; T. Mita and Y. Komeda leg.; YPT; VNMN.

Female (Fig. 20A)

MEASUREMENTS. Body length 4.2 mm; forewing length 3.6 mm.

HEAD. Head (Fig. 20B–D) 1.9 times as long as high, 1.4 times as long as wide; inner ocular length 0.66 times as long as head width; frontal projection rectangular in frontal view (Fig. 20B); apical margion of frontal projection depressed (Fig. 20B); frons rugose, with low ridge extending from vertex along inner orbit of eye (Fig. 20C); frons with distinct carinae towards posterior ocelli (Fig. 20C); spraclypeal area with transverse carinae (Fig. 20B); temple 2.8 times as long as MOD (Fig. 20C); POL 1.1 times as long as MOD; OOL 2.0 times as long as MOD; LOL 0.43 times as long as MOD; behind ocelli without transverse depression (Fig. 20C); cervical expansion flattened in lateral view (Fig. 20D); basal part of cervical expansion constricted strongly in dorsal view (Fig. 20C); scape 3.0 times as long as wide; scape with longitudinal grooves; scape with transparent flange, as long as tubular part of scape, 0.36 times as wide as tubular part of scape; F1 1.2 times as long as wide; F2 as long as wide; F11 as long as wide; relative length of F1–F11: 2.3: 1.5: 1.1: 1.1: 1.1: 1.1: 1.0: 1.0: 1.0: 1.0: 1.8.

MESOSOMA. Pronotum 0.80 times as long as posterior width of pronotum (Fig. 20E); posterior width of pronotum 1.7 times as wide as anterior width and 1.2 times as wide as head width; dorsolateral surface of pronotum carinate (Fig. 20A); notauli of scutum slightly curved, reaching posterior margin (Fig. 20F); scutellum polished and punctured (Fig. 20F); apico-lateral area of scutellum without longitudinal grooves (Fig. 20F); scrobal sulcus absent (Fig. 20A); metanotum with four ridges, 0.44 times as long as scutellum; (Fig. 20F); propodeal angle weakly developed; propodeum without transverse carina above foramen.

WINGS. Forewing (Fig. 20G) with M curved; cu-a 0.20 times as long as R; A extending half of Cu+M; R1 0.50 times as long as R; Rs 2.8 times as long as R.

LEGS. Posterior portion of tibiae longitudinally carinate; flange on forefemur 0.47 times longer, 1.2 times wider than tubular part of forefemur; flange on foretibia 0.55 times longer, 0.57 times wider than tubular part of foretibia; flange on midfemur 0.51 times longer, 0.89 times wider than tubular part of midfemur; flange on midtibia 0.55 times longer, 1.2 times wider than tubular part of midtibia; hind coxa 1.5 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 0.55 times longer, 0.75 tubular part of hindfemur; flange on hindtibia 0.82 times longer, 1.4 times wider than tubular part of hindtibia; hind tarsal claw without median tooth (Fig. 25N).

PILOSITY. Frons with sparse decumbent cuneate setae (Fig. 20C); spraclypeal area with sparse decumbent and simple and cuneate setae (Fig. 20B); eye with sparse erect simple setae (Fig. 20B); lower gena with sparse decumbent and simple and cuneate setae cervical expansion with sparse decumbent cuneate setae (Fig. 20D); hypostoma with sparse decumbent cuneate setae; scape with sparse suberect and erect simple setae; pedicel with sparse suberect and erect simple setae; F1 with sparse suberect and erect simple setae; dorsal part of pronotum with sparse suberect and erect cuneate setae; lateral surface of pronotum with sparse suberect and erect cuneate setae (Fig. 20A); scutum with sparse decumbent and suberect cuneate setae (Fig. 20F); mesopleuron with sparse decumbent cuneate setae (Fig. 20A); tegula with sparse suberect and erect cuneate setae (Fig. 20F); scutellum with sparse decumbent and suberect cuneate setae (Fig. 20F); lateral surface of propodeum with sparse decumbent cuneate setae (Fig. 20A); forecoxa and foretrochanter with sparse decumbent and simple and cuneate setae; foretibia with dense suberect simple setae; midcoxa and midtrochanter with sparse decumbent simple and cuneate setae; midfemur with sparse decumbent and suberect simple and cuneate setae; midtibia with dense suberect simple setae; hindcoxa and hindtrochanter with sparse decumbent simple and cuneate setae; hindfemur with sparse decumbent and suberect simple and cuneate setae; hindtibia with dense suberect simple setae; lateral margin of T4 with sparse decumbent simple and cuneate setae.

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

Male

Unknown.

Vietnam (Central Vietnam) (Fig. 29).

This new species can easily distinguished from other species by the pear-shaped head in the dorsal view (diamond- or kite-shaped in other species).