Bambusiphaga striola Lv, Li & Chen, 2024

Lv, Sha-Sha, Li, Hong-Xing, Yang, Lin, Zhang, Yu-Bo & Chen, Xiang-Sheng, 2024, Three new species of the genus Bambusiphaga Huang & Ding, 1979 (Hemiptera, Fulgoroidea, Delphacidae, Tropidocephalini) from China, with an updated checklist and key to species, ZooKeys 1217, pp. 291-307 : 291-307

Bambusiphaga striola Lv, Li & Chen sp. nov.

Figs 5 , 6

Type material.

Holotype: China • ♂; Tibet Province, Milin County, Milin Town ; 29°13'N, 94°13'E; sweeping, 22 August 2022; Yong-Jin Sui leg.; IEGU . Paratypes: China • 13 ♂♂, 15 ♀♀; same collection data as for holotype; IEGU .

Diagnosis.

The salient features of the new species include: vertex (Fig. 5 A, C ) brownish-black, basal compartment milky-white; tegula (Fig. 5 A, C ) milky-white; forewings (Fig. 5 F ) with a dark brown longitudinal band from anterior margin of basal part to posterior margin of apical part along the CuP and MP; pygofer (Fig. 6 C, G ) with a pair of medioventral processes; anal segment (Fig. 6 C, E ) with the process distinctly divided into 3 processes at apex; apical part of aedeagus (Fig. 6 J ) with two unciform processes, basal and middle parts each with a dentate processes. This species is similar to B. pianmaensis Chen & Liang, 2007 , but differs from the latter in: (1) posterior margin of pronotum milky-white at middle part (posterior margin of pronotum blackish-brown at middle part in B. pianmaensis ); (2) apical part of anal segment divided into 3 processes at apex (apical part of anal segment divided into 2 processes at apex in B. pianmaensis ); and (3) basal and middle parts of aedeagus each with a dentate process (basal and middle parts of aedeagus without a dentate process in B. pianmaensis ).

Description.

Measurements. Total length: male 4.8–5.0 mm (N = 14), female 5.3–5.6 mm (N = 15).

Coloration. General color milky-white to dark brown (Fig. 5 A – F ). Vertex blackish-brown, basal compartment milky-white. Frons milky-white, basal part with two blackish-brown spots. Clypeus milky-white. Genae basal 1 / 4 dark brown, rest milky-white. Antennae light brown. Pronotum with lateral carinae yellowish-white at inner side, with two dark brown spots, outer side black, lateral margins yellowish-white. Mesonotum pale yellowish-brown, lateral sides with two blackish-brown spots, lateral margins yellow, apex of scutellum yellowish-white. Tegula milky-white. Forewings translucent, with a dark brown longitudinal band from anterior margin of basal part to posterior margin of apical part along CuP and MP. Legs yellowish-white, except coxae of fore and median legs dark brown.

Head and thorax. Vertex (Figs 5 C , 6 A ) shorter in middle line than wide at base (1: 1.30), width at apex narrower than at base (1: 1.31), middle part of anterior margin convex, lateral margins widened towards the end, lateral and submedian carinae distinct, Y-shaped carina indistinct. Frons (Figs 5 E , 6 B ) longer in middle line than wide at widest portion (about 2.06: 1), widest at apex, median carina simple. Base of postclypeus (Figs 5 E , 6 B ) as wide as apex of frons. Antennae (Figs 5 E , 6 B ) with first segment longer than wide, shorter than second segment (1: 2.41). Pronotum (Figs 5 C , 6 A ) nearly equal in length to vertex in midline (1.10: 1). Mesonotum (Figs 5 C , 6 A ) longer than 1.40 times pronotum and vertex combined. Forewings (Fig. 5 F ) slender, longer than maximal width (3.41: 1).

Male genitalia. Pygofer ventral margin longer than dorsal margin in lateral view (Fig. 6 D ), ventral margin slightly concave, posterior margin convex medially, in posterior view (Fig. 6 C ) with opening longer than wide, oval, ventral margin with a relatively short medioventral process, forked medially. Anal segment (Fig. 6 C – F ) ring-like, with a thick and long anal process at left lateroapical angle, taper the end, distinctly divided into 3 processes at apex. Genital styles (Fig. 6 C, D, H – I ) short, hogged, apical part pointed, curved inward. Aedeagus (Fig. 6 J ) with phallobase, phallus tubular, basal part thick, curved ventrally in the middle, basal and middle parts each with a dentate process, apical part with two unciform spinous processes; gonopore located at apex of phallus; phallobase slender and long, curved at apex.

Host plant.

Bamboo.

Distribution.

China (Tibet Province).

Etymology.

The species name is derived from the Latin word “ striola ”, referring to forewing with a dark brown stripe.

Figures

Figure 5. Bambusiphaga striola Lv, Li & Chen, sp. nov., male A habitus, dorsal view B habitus, lateral view C head and thorax, dorsal view D head and thorax, lateral view E frons, ventral view F forewing.

Figure 6. Bambusiphaga striola Lv, Li & Chen, sp. nov., male A head and thorax, dorsal view B frons, ventral view C male genitalia, posterior view D male genitalia, lateral view E anal segment, posterior view F anal segment, lateral view G pygofer, posterior view H genital style, posterior view I genital style, lateral view J aedeagus, lateral view. Scale bars: 0.5 mm (A, B); 0.2 mm (C – J).