Bambusiphaga ventroprocessa, Hong-Xing, Li, Yang, Lin & Chen, Xiang-Sheng, 2018

Hong-Xing, Li, Yang, Lin & Chen, Xiang-Sheng, 2018, Two new species of the bamboo-feeding planthopper genus Bambusiphaga Huang & Ding from China (Hemiptera, Fulgoromorpha, Delphacidae), ZooKeys 735, pp. 83-96 : 89-95

Bambusiphaga ventroprocessa sp. n. Figs 22-30, 31-39

Type material.

Holotype: ♂, China: Hainan Province, Lingshui County (110°01'E, 18°30'N), on bamboo, 16 Apr. 2017, H.-X. Li; paratypes, 3♂♂, 10♀♀, same data as holotype.

Etymology.

The specific name is a combination of the Latin word venter (truncated, with o- connecting vowel), meaning belly, ventral; and the Latin word processus, meant in the modern biological sense of a projection or appendage, truncated with the feminine termination -a.

Measurements.

Body length (from apex of vertex to tip of forewings): male 2.4-2.6 mm (N = 4); female 2.4-2.7 mm (N = 10); forewings length: male 2.0-2.2 mm (N = 4); female 2.0-2.3 mm (N = 10).

Diagnosis.

The salient features of the new species include the following: forewings with two large black markings at base (Fig. 29); pygofer with mediovental process large and inversed (Fig. 32); aedeagus with numerous inversed spines at apical 1/2 (Fig. 36).

Description.

Coloration. General color yellowish white to black (Figs 22-30). Vertex, frons, clypeus, antennae and legs yellowish white. Genae black brown. Eyes and ocelli brownish red (Figs 26, 28). Pronotum (Figs 24-25) black, disc with anterior 1/3 between lateral carinae and median carina yellowish white. Mesonotum (Figs 24-25) blackish brown, apex of scutellum yellowish white. Forewings (Fig. 29) with two large dark brown markings at basal area.

Head and thorax. Vertex (Figs 24-25) with anterior margin angled convex medially, Y-shaped carina with stalk absent, ratio of length to width at base 0.9, ratio width at base to width at apex 1.4. Frons (Figs 26-27) with ratio of length in middle line to width at widest 2.6, widest at apex, median carina simple and obscure apically. Clypeus (Figs 26-27) with width at base as same as frons at apex. Antennae (Figs 26-27) with basal segment subequal to broad, shorter than second segment (1.0: 3.0), reaching to frontoclypeal suture. Pronotum (Figs 24-25) with carinae distinct, lateral carinae attaining hind margin, length in midline as long as vertex. Mesonotum (Figs 24-25) with lateral carinae straight, subparallel, attaining hind margin, median carina obscured apically, ratio length to pronotum and vertex combined in middle line 1.3. Forewings (Fig. 29) with radio of length in middle line to width at widest part 2.5, apical margin rounded. Hindwings (Fig. 30) elongate.

Male genitalia. Pygofer in posterior view (Fig. 32) with medioventral process large and inversed, opening longer than wide, lateral margins sinuate; in lateral view (Fig. 33) dorsal margin shorter than ventral margin distinctly, posterior margin concave. Aedeagus (Fig. 36) stout, tubular, apical 1/2 with numerous inversed spines. Genital styles (Fig. 35) moderately long, tapering apically. Anal segment (Fig. 31) short, ring-like, ventral margin without process.

Female genitalia. Female pygofer (Fig. 37) with gonocoxa VIII moderately large. Ovipositor (Fig. 37) overpassing apical margin of pygofer distinctly. Gonangulum with apical margin blunt, connected gonocoxa VIII. Gonapophyses IX (Fig. 39) long and large, curved and directed basad, apex sharp, dorsal margin with apical 1/2 serrated.

Host plant.

Bamboo.

Distribution.

South China (Hainan) (Fig. 40).

Remarks.

This species is similar to B. kunmingensis Yang & Chen, 2011, but can be distinguished by the basal area of forewing with two dark brown markings (forewing with basal 1/3 full dark brown in kunmingensis ); the mediovental process of pygofer large (without mediovental process in kunmingensis ); the aedeagus without phallobase (phallobase arising from base of aedeagus, as long as aedeagus in kunmingensis ).

This new species is also similar to B. basifusca Hou & Chen, 2010, but can be distinguished by the ventral margin of anal segment without process (ventral margin of anal segment with a long process in basifusca ); the ventral margin of pygofer with a medioventral process (ventral margin of pygofer with three medioventral processes in basifusca ); and the aedeagus without phallobase (aedeagus with phallobase in basifusca ).

Based on the characters of male genitalia, this species should belong to the kunmingensis group.