Neobelocera biprocessa, Yang & Chen, 2020

LI, Hong-Xing, Yang, Lin & Chen, Xiang-Sheng, 2020, Two new species of the bamboo-feeding planthopper genus Neobelocera Ding & Yang, 1986 from China (Hemiptera, Fulgoroidea, Delphacidae), European Journal of Taxonomy 641, pp. 1-14 : 5-7

Neobelocera biprocessa sp. nov.

urn:lsid:zoobank.org:act:ADB55E92-788F-4CEA-AC25-7E35035028B2

Figs 1–2

Diagnosis

The salient features of the new species include the following: frons with pale transverse band below level of lower margin of eyes ( Fig. 2B ); antennal segment I subsagittate, markedly flattened, with median longitudinal carina, the ventral apical angle longer than dorsal apical angle ( Fig. 2B ); ventral margin of pygofer concave U-shape, without process ( Fig. 2F ); phallus with basal half broad, compressed, apical half slender, tubular, curved ventrally, acute at apex, with spinous process at basal ¼ and node subapically ( Fig. 2G ); phallobase with long straight spinous process basally and three processes apically ( Fig. 2G ); genital styles in posterior view inner margin with two processes ( Fig. 2H ).

Etymology

The species epithet is derived from the Latin words ‘ bi -’ and ‘ process ’, referring to the inner margin of genital styles with two processes.

Type material

Holotype

CHINA • ♂; Hainan Province, Changjiang County; 19°06′ N, 109°04′ E; 24 Apr. 2009; X.H. Hou leg.; on bamboo; GUGC-FS-TN-20090401 .

Paratypes

CHINA • 1 ♂, 2 ♀♀; same collection data as for holotype; GUGC-FS-TN-20090402 to 20090404 .

Description

MEASUREMENTS. Body length including forewing: male 2.8–2.9 mm (N = 2); female 3.0– 3.1 mm (N = 2); forewing length: male 2.5 mm (N = 2); female 2.6–2.7 mm (N = 2).

COLORATION. General coloration yellowish white to brown ( Fig. 1 A–F). Vertex, pronotum, mesonotum yellowish white, pronotum and mesonotum with lateral areas brown, base of pronotum, middle areas of mesonotum somewhat light yellow ( Figs 1C , 2A ). Frons and genae yellowish brown, except broad transversal stripe below level of lower margin of eyes and narrow stripe of apex yellowish white, along near apex of median carina of frons and inner margin of lateral carinae of genae with several short transversal stripes, yellowish white. Clypeus with basal half yellowish white and apical half dark brown ( Fig. 1E ). Rostrum yellowish brown, except apex dark brown. Eyes yellowish brown. Ocelli reddish brown. Antennae brown, except lateral margins of first segment yellowish white ( Fig. 1E ). Legs yellowish white to brown, with dark maculations. Forewing light yellowish white, almost hyaline, basal part near costal margin with big infuscate markings, and apical part from transverse veins to apex with dark brown markings, veins with white spots ( Fig. 1F ). Wings hyaline with veins dark brown.

HEAD AND THORAX. Head including eyes wider than pronotum ( Fig. 2A ). Vertex broad transversely, wider at base than long medially about 3.80: 1 ( Fig. 2A ). Frons in middle line longer than wide at widest part about 1.46: 1, widest above level of lower margin of eyes ( Fig. 2B ). Postclypeus at base almost as wide as frons at apex ( Fig. 2B ). Antennae with first segment shorter than second segment about 0.53: 1, second segment cylindrical, longer than wide about 2.80: 1 ( Fig. 2B ). Pronotum subequal to vertex medially. Mesonotum longer than vertex and pronotum combined about 2.27: 1 ( Fig. 2A ). Forewing in middle line longer than wide at widest part about 2.73: 1 ( Fig. 2C ).

MALE GENITALIA. Anal segment small, ring-like ( Fig. 2D ). Pygofer in profile much longer ventrally than dorsally ( Fig. 2E ), in posterior view with opening longer than wide, ventral margin concave U-shape, without process ( Fig. 2F ). Aedeagus with phallobase, phallus with basal half broad, compressed, apical half slender, tubular, curved ventrally, acute at apex, with spinous process at basal ¼ ventrally and node subapically, phallobase long, arising from base of aedeagus, curved at basal ¼, 7-shaped, with long straight spinous process basally and three processes apically ( Fig. 2G ). Genital styles simple, long, inner margin with two processes ( Fig. 2H ).

Host plant

Bamboo.

Distribution

China (Hainan).

Remarks

This new species is assigned to the genus Neobelocera because the antennal segment I is subsagittate, markedly flattened, with a median longitudinal carina, the ventral apical angle longer than the dorsal apical angle ( Fig. 2B ). This species is similar to N. asymmetrica Ding & Yang, 1986 in having the vertex short relatively ( Fig. 2A ), forewing broad and about 2.7 times as broad as median length, apical margin acutely rounded, with blackish brown markings, and veins with white spots or white short stripes at intervals ( Fig. 1F ), frons with broad transversal stripe below level of lower margin of eyes yellowish white, along near apex of median carina with several short transversal stripes, yellowish white ( Fig. 1E ), genae with 2–3 light brown spots ( Fig. 1E ), male pygofer with ventral margin concave U-shape, without process ( Fig. 2F ). However, it can be distinguished from the latter by the following features: (1) phallus ( Fig. 2G ) with basal half broad, compressed, apical half slender, tubular, curved ventrally, acute at apex, with process at basal ¼ and node subapically (in N. asymmetrica , phallus tubular, rounded at apex, without process and node); (2) phallobase ( Fig. 2G ) curved at basal ¼, 7-shaped, with long straight spinous process basally and three processes apically (in N. asymmetrica , phallobase slender, long and curly, spine-like); (3) genital styles ( Fig. 2H ) in posterior view inner margin with small processes medially and at basal ¼ (in N. asymmetrica , genital styles in posterior view inner margin without process medially, with a nipple-like process at subapical ¼).

Figures

Fig. 1. Neobelocera biprocessa sp. nov., holotype (GUGC-FS-TN-20090401) A. Male habitus, dorsal view. B. Same, lateral view. C. Head and thorax, dorsal view. D. Same, lateral view. E. Face. F. Forewing.

Fig. 2. Neobelocera biprocessa sp. nov., holotype (GUGC-FS-TN-20090401). A. Head and thorax, dorsal view. B. Face. C. Forewing. D. Male genitalia, posterior view. E. Same, lateral view. F. Pygofer, posterior view. G. Anal segment and aedeagus, lateral view. H. Genital style, posterior view. I. Same, lateral view. Scale bars: A–B, D–I = 0.2 mm; C = 0.5 mm.