Two new bamboo-feeding species of the planthopper genus Bambusicaliscelis Chen &amp; Zhang, 2011 (Hemiptera, Fulgoromorpha, Caliscelidae) from China

Nian Gong; Xiang-Sheng Chen; Lin Yang

doi:10.3897/zookeys.1183.110917

Research Article

Two new bamboo-feeding species of the planthopper genus Bambusicaliscelis Chen & Zhang, 2011 (Hemiptera, Fulgoromorpha, Caliscelidae) from China

Nian Gong^‡, Xiang-Sheng Chen^§, Lin Yang^§

‡ Guiyang Healthcare Vocational University, Guiyang, China

§ Guizhou University, Guiyang, China

Corresponding author: Lin Yang ( yanglin6626@163.com )

Academic editor: Ilia Gjonov

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Gong N, Chen X-S, Yang L (2023) Two new bamboo-feeding species of the planthopper genus Bambusicaliscelis Chen & Zhang, 2011 (Hemiptera, Fulgoromorpha, Caliscelidae) from China. ZooKeys 1183: 111-120. https://doi.org/10.3897/zookeys.1183.110917

ZooBank: urn:lsid:zoobank.org:pub:8A9F1921-EEB9-4C75-B8C4-12594214B620

Abstract

Two new species of the Chinese caliscelid planthopper genus Bambusicaliscelis Chen & Zhang, 2011, B. bibulbus sp. nov. from Fujian Province and B. clavatus sp. nov. from Jiangxi Province, are described and illustrated. The genus now known to include six described species. A checklist and identification key to Bambusicaliscelis species are provided.

Key words

Bamboo, Caliscelini, distribution, Fulgoroidea, morphology, Oriental region, taxonomy

Introduction

The caliscelid genus Bambusicaliscelis was erected by Chen and Zhang (2011) based on two species, B. dentis Chen & Zhang, 2011, and B. fanjingensis Chen & Zhang, 2011, from Guizhou Province, southern China. It belongs to the tribe Caliscelini of the subfamily Caliscelinae (Hemiptera, Fulgoroidea, Caliscelidae) (Chen and Zhang 2011). Two species, B. flavus Chen & Gong, 2018, and B. guttatus Chen & Gong, 2018, were later described from Yunnan and Guangxi Provinces of southern China (Gong et al. 2018). Bambusicaliscelis species are similar to one another, but they can be easily distinguished by their male genitalia. All species of the genus are small-bodied (body length ca 3.1–5.1 mm), flightless, and feed on bamboo according to Chen and Zhang (2011) and Gong et al. (2018).

Here, we describe and illustrate two new species, B. bibulbus sp. nov. and B. clavatus sp. nov., from Fujian and Jiangxi Provinces of southern China and collected on bamboo. Thus, six species are now known in the genus. A checklist and a key based on male genitalia to all known Bambusicaliscelis species are provided.

Materials and methods

Terminology used for the external morphology and the male genitalia mainly follows Chan and Yang (1994) and Chen and Zhang (2011). The description of the female genitalia mainly follows Bourgoin (1993). Dry specimens were used for the descriptions and illustrations. External morphology was observed under a stereoscopic microscope and characters were measured with an ocular micrometer. All measurements are given in millimeters (mm); body length was measured from the apex of the head to tip of the abdomen in repose. The genital segments of the examined specimens were macerated in 10% NaOH and examined in glycerin jelly using a Leica MZ 12.5 stereomicroscope. Photographs were taken with a KEYENCE VHX-1000 system. Illustrations were scanned with CanoScan LiDE 200 and imported into Adobe Photoshop CS6 for labelling and composition of the figures. The dissected male genitalia are preserved in glycerine in small plastic tubes pinned together with the specimens.

The type specimens and material examined are deposited in the Institute of Entomology, Guizhou University, Guiyang, China (IEGU).

Taxonomy

Order Hemiptera Linnaeus, 1758

Suborder Fulgoromorpha Evans, 1946

Family Caliscelidae Amyot & Audinet-Serville, 1843

Subfamily Caliscelinae Amyot & Serville, 1843

Tribe Caliscelini Amyot & Serville, 1843

Bambusicaliscelis Chen & Zhang, 2011

Type species

Bambusicaliscelis fanjingensis Chen & Zhang, 2011, by original designation. Bambusicaliscelis Chen & Zhang, 2011: 95; Chen et al. 2014: 157; Gong et al. 2018: 81.

Diagnosis

For the diagnosis of Bambusicaliscelis, see Gong et al. (2018: 82). In addition, the hind tibiae has one spine at middle. Spinal formula of hind leg 6 (7)-3-2.

Host plant

Bamboo.

Distribution

Southern China (Guizhou, Yunnan, Guangxi, Jiangxi, Fujian provinces) (Fig. 5).

Checklist of species of Bambusicaliscelis Chen & Zhang, 2011

B. dentis Chen & Zhang, 2011; China (Guizhou).

B. fanjingensis Chen & Zhang, 2011; China (Guizhou).

B. flavus Chen & Gong, 2018; China (Yunnan).

B. guttatus Chen & Gong, 2018; China (Guangxi).

B. bibulbus Gong & Yang, sp. nov.; China (Fujian).

B. clavatus Gong & Yang, sp. nov.; China (Jiangxi).

Key to species of genus Bambusicaliscelis (modified from Gong et al. 2018) (males)

1	The ratio of vertex base width to median length is less than 2; phallus without any teeth-like processes	2
–	The ratio of vertex base width to median length is more than 2; phallus with 2–3 teeth-like processes (Chen and Zhang 2011: figs 19, 20)	*B. dentis*
2	Forewing yellow; pygofer in lateral view (Gong et al. 2018: fig. 8) with posterior margin sinuate	*B. flavus*
–	Forewing brown; pygofer in lateral view with posterior margin concave in the middle	3
3	Forewing with one large marking near apical margin	*B. guttatus*
–	Forewing without marking near apical margin	4
4	Forewing with one pale yellow marking near base	B. bibulbus sp. nov.
–	Forewing without any marking near base	5
5	Spinal formula of hind leg 6-3-2; pygofer in posterior view (Chen and Zhang 2011: fig. 7) ventral margin with short, broad medioventral process, lobe-like	*B. fanjingensis*
–	Spinal formula of hind leg 7-3-2; pygofer in posterior view (Fig. 4(H)) ventral margin with claviform medioventral process	B. clavatus sp. nov.

Bambusicaliscelis bibulbus sp. nov.

https://zoobank.org/BE41F1DA-FB57-437A-B1C3-CD629F64FA39

Figs 1, 2, 3

Description

Measurements. Body length (from apex of vertex to tip of abdomen): male 3.9–4.1 mm (N = 3), female 4.9–5.1 mm (N = 4); forewing length: male 1.7–1.8 mm (N = 3), female 1.9–2.1 mm (N = 4).

Colouration. Male: body mainly brown; longitudinal stripe from apex of vertex to tip of abdomen pale yellow. Frons dark brown, with small, yellowish-white tubercules between lateral and sublateral carinae. Clypeus dark brown. Eyes yellowish brown. Forewing brown, with one pale yellow marking near base. Abdominal 4^th and 5^th pleuron pale yellow. Female: body mainly brown but some green; longitudinal stripe from apex of vertex to tip of abdomen inconspicuous and pale yellow. Eyes and forewing brown.

Figure 1.

Bambusicaliscelis bibulbus sp. nov. A male habitus, dorsal view B male habitus, lateral view C female habitus, dorsal view D female habitus, lateral view. Scale bars: 0.5 mm (A–D).

Head and thorax. Vertex with anterior margin subtruncate; width of vertex, including eyes, as long as pronotum. Vertex at middle 0.6 times wider than width at base. Frons 1.1 times longer in middle than at widest part; sublateral carinae slightly keeled; median carina distinct; areas between sublateral carinae and lateral carinae slightly depressed. Pronotum as long as vertex. Mesonotum at middle 0.8 times as long as vertex and pronotum together, 3-carinate, median carina weak. Spinal formula of hind leg 7-3-2.

Figure 2.

Bambusicaliscelis bibulbus sp. nov., male A head and thorax, dorsal view B face C head and thorax, lateral view D anal segment, dorsal view E genitalia, lateral view F pygofer, posterior view G genital styles, lateral view H pygofer and genital styles, ventral view I aedeagus, lateral view J aedeagus, dorsal view. Scale bars: 0.5 mm (A–C, E, F, H); 0.3 mm (D, G, I, J).

Male genitalia. Anal segment in dorsal view 1.5 times longer at middle than at widest part; apical margin roundly convex, broadening apically, and broadest at apical third; dorsal margin in lateral view slightly convex, widest at apical half, thence constricted, ventral margin slightly concave in the middle. Pygofer in lateral view with posterior margin with upper half roundly convex, lower half heart-shaped, convex, and ventral margin strongly oblique; in posterior view 1.7 times as long as widest part; in ventral view, posterior margin with a double-droplet-shaped medioventral process. Genital style in lateral view with basal half broad, apical third narrowest; apical margin slightly convex; a finger-like process apically arises from dorsal margin, slightly dorsally curved; genital style in ventral view long, median portion broad. Phallobase tubular, with broad base, narrowing apically, apex ventrally divided into double petals. Aedeagus double-tubular, much more slender and longer, encircled in phallobase, reflexed basad at level of apex of phallobase, tapering apically.

Figure 3.

Bambusicaliscelis bibulbus sp. nov., female A genitalia, lateral view B genitalia, ventral view C anal segment, dorsal view D abdominal sternite VII, ventral view E gonapophysis VIII, lateral view F gonapophysis IX, lateral view. Scale bars: 0.5 mm (A, B, D); 0.3 mm (C, E, F).

Female genitalia. Anal segment in dorsal view 0.9 times longer at middle than at widest part; apex narrowed; apical margins convex; anal pore located in the middle, in lateral view small, narrowing apically. Abdominal sternite VII in ventral view with width 3.6 times as long as length; posterior margin strongly trapezoidal concave, behind the posterior margin with two small, triangular ossification flakes. Gonapophysis VIII (first valvula) elongate, with five spines at apical margin. Gonapophysis IX (second valvula) with two symmetrical lobes; each lobe with many spines at dorsal margin. Gonoplac (third valvula) with outer surface shagreened; in lateral view broad, nearly triangular.