Polionemobius marblus He, 2019

Zhang, Ling, Shen, Chu-Ze, Tian, Di, Liu, Yun-Fei, Li, Kai & He, Zhu-Qing, 2019, New and little-known crickets from Southern Guangxi, China (Orthoptera: Grylloidea: Gryllidae: Phalangopsidae; Trigonidiidae), Zootaxa 4674 (5), pp. 544-550 : 546-548

Polionemobius marblus He sp. nov.

( Fig. 1 A–D, Fig. 2 A–C, Fig. 3 A&B )

Holotype: male, CHINA, Guangxi, Baise, Jingxi, Wuling , 19-iv-2019, coll. He Zhu-Qing.

Paratypes: 5 males & 6 females, same data as holotype .

Description. Male. Body small and pubescent. Head: as broad as pronotum, frontal rostrum two times as wide as 1st antennal article. Pronotum transverse, anterior margin as broad as posterior margin. Fore tibia with tympanum on outside surface; hind tibia with 3 external dorsal spurs and 4 internal dorsal spurs (the base one minute). Forewing not extending to apex of abdomen, one oblique vein, mirror small. Genitalia: epiphallus elongate, with a pair of inward middle lobes, which are shorter than lateral lobes as in Fig 2 .

Female. Forewing short. Hind tibiae with three internal dorsal spurs. Ovipositor short and straight.

Coloration. Head brown with 7 longitudinal yellow stripes on vertex. 4th joint of maxillary palpus white, others black. Pronotum disk brown with black and yellow spots, lateral area black. Forewing yellow. Legs almost black with some small white spots, inner side of hind femur white with broken black stripe.

Etymology. marblus is used to describe its color pattern on legs.

Measurements (in mm). Male: body 6.18–6.27, pronotum length 1.38–1.50, forewing length 3.47–3.75, hind femur length 4.30–4.65; Female: body 5.05–5.86, pronotum length 1.55–1.69, forewing length 2.30–2.88, hind femur length 4.26–4.34, ovipositor length 2.10–2.35.

Distribution. China (Guangxi).

Song. Chirps continue 2.5– 7.1s with 0.56– 0.96s interval. Each chirp includes 18–33 pulses. Chirp rate is about 50 pulses/s ( Fig. 3 A&B ).

Remarks. This species prefers grasses. It is different with P. taprobanensis by in not having black spots on the forewing. This contrasts with P. annulicornis and also by the color of antenna, and differs from P. yunnanus in the body color.

Figures

FIGURE 1. A–D: Polionemobius marblus He sp. nov., E & F: Ornebius panda He sp. nov., G & H: Gorochov trinervus. A, E, G: male, B, F, H: female, C: ultimate instar male, D: ultimate instar female.

FIGURE 2. Genitalia of Polionemobius marblus He sp. nov. A: dorsal view, B: ventral view, C: lateral view.

FIGURE 3. Calling songs. A & B Polionemobius marblus He sp. nov. in 5s and 0.5 s, respectively, C & D Ornebius panda He sp. nov. in 5s and 0.5 s, respectively.