Gibbotettix parvipulvillus, Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2016

Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2016, Two new species of the genus Gibbotettix Zheng, 1992 (Orthoptera: Tetrigidae, Cladonotinae) from China, Zootaxa 4200 (3), pp. 426-436 : 432-434

2. Gibbotettix parvipulvillus sp. nov.

( Figs. 31–41 )

Type material. Holotype: 1♀, 10 July 2014, collected by Rong-Jiao ZHANG, SCBHU. Paratypes. 5♂, 1♀, same data, type locality, SCBHU .

Type locality. China, Guangxi, Jinxiu, Dayaoshan National Nature Reserve , 24°09’N –110°14’E, 1300m alt.

Description. Female ( Figs. 31–39 ). Size small and stout and its surface coarsely, with many tubercrles and shallow depressions. Head short and not exerted above the pronotal surface, vertex is wide and its width 2.5 times the width of an eye; anterior margin of vertex nearly straight, not protruding beyond eyes, fore half of median carina conspicuous; lateral margins of vertex produced upwards, exserted above the eyes surface in profile; vertex and frontal ridge are forming obtusely rounded, frontal ridge between eyes unseen and protruding angular between antennae in profile; width of longitudinal furrow of frontal ridge 1.5 time width of basal segment antenna. Antennae filiform, located far below the eyes, 14-segmented, mid segments 9–10 times as long as wide. Eyes globose; lateral ocelli placed in between lower margins of eyes.

Pronotum elevated and hump-shaped protuberated before shoulders, low and flat behind shoulders. Anterior margin of pronotum protruding triangular in the middle; median carina high and lamellar at the former part, low at the latter part, interrupted; lateral keels of prozona slightly constricted inwards in middle, humeral angle arcuate; dorsum of pronotum with numerous tubercles and concavities between and behind shoulders; hind pronotal process reaching apex of hind femur and its apex with deeply concave. Posterior angles of lateral lobes produced outwards, end of posterior angles truncate, posterior margins of lateral lobes of pronotum with one concavity. Tegmina and hind wings absent. Upper margins of fore and middle femora with two to three large teeth; lower margins of fore and middle femora with two large teeth. Hind femur short and stout, midkeel of upper and lower side serrated, with three large teeth behind the middle of midkeel of upper side, antegenicular and genicular denticles large and triangular; midkeel of lower side undulated; with 2 tubercules on outside in the middle. Outer side of hind tibia with 8–9 spines, inner side with 5 spines. Length of first segment of hind tarsi longer than third; first and second pulvillus degenerated and very small, apices sharp; third pulvillus normal, apices right angle. Ovipositor short and stout, upper and lower valvulae with slender saw-like teeth. Length of subgenital plate shorter than its width, posterior margin of subgenital plate with three teeth.

Body dark brown. Antennae black with light apices, the last three segmented yellow brown. Hind tibia black, with light ring in the base and ends.

Male ( Figs. 40–41 ). Similar to female, but smaller and narrower. Subgenital plate brief cone-shaped, apex bifurcated.

Measurements (mm). Length of body ♂ 9.0–9.5, ♀ 12.0–12.5; length of pronotum ♂ 8.5–9.0, ♀ 10.5–11.0; length of hind femur ♂ 4.5–5.0, ♀ 6.0–6.5.

Remarks. New species is similar to Gibbotettix guangxiensis Zheng et Jiang, 1998 , but is easily distinguished by morphological characters as shown in width of vertex 2.5 times width of an eye (width of vertex 2 times width of an eye in G. guangxiensis ); frontal ridge protruding angular between antennae in profile (frontal ridge not protruding between antennae in profile in G. guangxiensis ); lateral ocelli placed in between lower margins of eyes (lateral ocelli placed in middle anterior margins of eyes in G. guangxiensis ); antennae located far below the eyes (antennae located between lower margins of the eyes in G. guangxiensis ); median carina of pronotum interrupted (median carina of pronotum entrie in G. guangxiensis ); hind pronotal process reaching apex of hind femur (hind pronotal process reaching knee of hind femur in G. guangxiensis ).

Etymology. The new species' name is derived from Latin parv and pulvillus, meaning first and second pulvillus of posterior tarsus degenerated and very small.

Distribution. China (Guangxi).

Figures

FIGURES 31 – 35. Gibbotettix parvipulvillus sp. nov., female, holotype: 31 — dorsal view of body; 32 — lateral view of body; 33 — head, dorsal view; 34 — head and lateral lobes of pronotum, lateral view; 35 — head, frontal view. (scale bar = 1 mm).

FIGURES 36 – 41. Gibbotettix parvipulvillus sp. nov., 36 – 39. female, holotype: 36 — left fore femur, lateral view; 37 — left mid femur, lateral view; 38 — left posterior tarsi, lateral view; 39 — ovipositor of female, lateral view. 40 – 41. male, paratype: 40 — subgenital plate, lateral view; 41 — lateral view of body. (scale bar = 1 mm).