Tetricodes ansatus Chang & Chen

Chang, Zhi-Min, Yang, Lin, Long, Jian-Kun & Chen, Xiang-Sheng, 2017, Three new species of the Chinese planthopper genus Tetricodes Fennah (Hemiptera, Fulgoroidea, Issidae, Parahiraciini), ZooKeys 698, pp. 1-15 : 4-5

Tetricodes ansatus Chang & Chen sp. n. Figs 1-2, 7-15, 16-21

Type material.

Holotype: ♂, China: Guangxi, Nonggang (22°28'N, 106°57'E), 8 May 2012, H. Li; paratypes: 1♂, Guangxi, Nonggang, 8 May, 2012, Z.-H. Fan; 1 ♀, Guangxi, Nonggang, 6 May 2012, Z.-H. Fan.

Diagnosis.

This species is similar to T. polyphemus , but differs from the latter by the anal tube (Fig. 13) irregularly pentagonal in dorsal view, phallobase with two processes near basal dorsal margin (Fig. 14b, c) and aedeagus with pair of small sheet processes (Fig. 14f) at apical 1/3 in lateral view.

Description.

Body length: male 6.5-6.6 mm, female 6.7 mm; Forewing: male 5.3-5.5 mm, female 5.4 mm.

Coloration. General color brown, with irregular black mottling. Vertex with black speckles near base (Fig. 7). Eyes brown to black (Fig. 8). Frons (Fig. 9) with small black protuberance with light median line running from the upper margin, with narrow pale transverse clearer band under the black protuberance, to nearly the basal 1/3 of face, not reaching ventrally level of compound eyes, and pale spots near lateral margins. Clypeus brown with pale marks in middle line and rostrum brown. Forewings (Fig. 1) with irregular black mottling. Legs with tips of spines on hind tibiae and tarsi black.

Head and thorax. Head (Fig. 7) including eyes narrower than pronotum (0.76: 1.00). Vertex (Fig. 7) shorter in middle than the wide at base (0.57: 1.00), disc of vertex without median carina. Frons (Fig. 9) flat, with median carina only present at base, longer in middle than the widest breath (1.30: 1.00). Clypeus triangular, with distinct median carina and rostrum surpassing mesotrochanters. Pronotum (Fig. 7) with median carina obscure, lateral carina not reaching to the posterior margin. Mesonotum (Fig. 7) triangular, with median carina obscure, Hind tibiae each with 2 spines, spinal formula of hind leg 8 –8– 2 (male); 7 –8– 2 (female). Forewings (Fig. 10) elongate, 2.3 times as long as maximum breadth, ScP and Rp convergent near base, M four branched, MP1+2 bifurcates apically, MP3+4 bifurcates at middle part, CuA simple, not forked; CuP present, Pcu and A1 uniting in basal 2/3 of clavus. Hindwings (Fig. 11) with two big lobes, anal lobe reduced.

Male genitalia. Anal tube (Fig. 13) irregularly pentagonal in dorsal view, the widest breath in apical 1/3. Anal style (Fig. 13) short, located at the base 1/3 of anal tube. Pygofer (Fig. 12) narrow and curved in lateral view, irregular sub-quadrate. Genital styles (Fig. 12) short, without triangular prominence near dorsal margin before capitulum; capitulum of genital styles relatively short, subtrapezoidal on short neck. Phallobase with dorsal lobe cystiform at apical part, with irregular lobes in apical 1/4 in lateral view (Fig. 14a), bean-shaped process in basal dorsal margin (Fig. 14b), with big ansate process (Fig. 14c) in subbasal dorsal margin in lateral view; lateral lobe splitting into two stout branches, with stout sub-angular processes near apical (Figs 14d, 15d); ventral lobe short, not reaching to the tip of dorsal lobe, in ventral view ventral lobe with three lobes near apical part (Figs 14e, 15e). Aedeagus with pair of small sheet-like processes at apical 1/3 in lateral view (Figs 14f, 15f).

Female genitalia. Hind margin of sternum VII wide concavity, with curved process in middle in ventral view (Fig. 17). Anal tube (Fig. 16) sub-rectangular, truncated apically, longer in middle than the widest breadth (2.12: 1.00), anal style short, located at the basal 1/6 of anal tube. Anterior connective lamina of gonapophyses VIII with 7 lateral teeth bearing 7 keels in lateral group and 3 apical teeth (Fig. 18). Posterior connective lamina of gonapophyses IX (Figs 19, 20) long subtriangular, narrowing, median field with a slender shaft prominence (medial dorsal process) (Fig. 19); sublateral field with one triangular process on lateral margins; lateral field without process; ventroposterior lobes bent at obtuse angle (posterior ventral lobes) (Fig. 19). Gonoplacs (Fig. 21) without keels.

Etymology.

The name is derived from the Latin noun " ansatus ", meaning phallobase with big handle-shaped process in subbasal dorsal margin in lateral view.

Host plant.

Unknown.

Distribution.

China (Guangxi).