Teredorus hunanensis, Deng, Wei-An, Lei, Chao-Liang & Zheng, Zhe-Min, 2014

Deng, Wei-An, Lei, Chao-Liang & Zheng, Zhe-Min, 2014, Two new species of the genus Teredorus Hancock, 1906 (Orthoptera, Tetrigidae) from China, with a key to the species of the genus, ZooKeys 431, pp. 33-49 : 40-42

Taxon classification Animalia Orthoptera Tetrigidae

Teredorus hunanensis sp. n. Figs 3-4

Female.

Size small, slender. Length of body (from vertex to apex of hind process) 3.2 times as its width (between posterior angles of lateral lobes of pronotum), head not exerted above upper level of pronotum (Fig. 4B). In dorsal view, vertex strongly contracted forward drawing the eyes very near together(Fig. 4D), not exserted before eyes, midkeel distinct, extended to occiput; vertex visible before eyes in lateral view, vertex and frontal ridge forming rounded, frontal ridge slight concave between lateral ocelli, arc-protruding between antennae, longitudinal furrow narrower than width of 1st segment of antennae. Antenna filiform, 15-segmented, inserted below lower margin of eyes (Fig. 4B, C), mid segments 5-6 times as long as wide. Eyes globose, lateral ocelli placed on slightly lower than middle of anterior margins of eyes(Fig. 4C).

Disc of pronotum smooth, with numerous small granules, mid keel of pronotum entire (Fig. 3B), upper margin of pronotum slightly undulating before shoulders and straight behind shoulders in profile (Fig. 3A). Anterior margin of pronotum straight, lateral keels of prozona unconspicuous, parallel (Fig. 4D), humeral angle obtuse, without abbreviated carinae between shoulders. Posterior process of pronotum narrow, long cone-shaped, surpassing apex of hind femur and reaching one third of hind tibia (Fig. 3A). Lateral lobes of pronotum turned downwards, posterior angles rounded, posterior margin of each lateral lobe with two concavities. Visible part of tegmina ovate (Fig. 4E), apex narrowly rounded, with length 2.8 times its width. Hind wings developed, reaching and slightly surpassing apex of posterior process of pronotum (Fig. 4A). Upper and lower margins of fore femur and mid femur straight (Fig. 4F, G), width of mid femur equal to tegmina. Hind femur stubby (Fig. 4H), with length 2.8 times its width, mid keel of dorsal and ventral side of hindfemur dentate, antegenicular right angle and genicular denticles acute angle. Outer side of hind tibia with five to six spines, inner side with four to six spines (Fig. 4I). First segment of posterior tarsus equal to third in length, three pulvilli equal in length, apices of all pulvilli abtuse (Fig. 4J). Ovipositor narrow and long, length of upper valvulae 3 times its width, upper and lower valvulae with slender saw-like teeth (Fig. 4K). Length of subgenital fig equal to width, middle of posterior margin of subgenital fig triangularly projecting (Fig. 4L).

Colouration. Body dark brown. Hind wings black. Fore and mid femora brown, with two black rings in the middle, first segment of tarsi black, apex of second segment black. Hind femora dark brown or brown, inner side black. Hind tibiae black, with two yellowish brown rings in the middle (Fig. 3A).

Male (Fig. 3C, D). Similar to female, but smaller and narrower. Subgenital fig short, cone-shaped (Fig. 4N).

Measurements.

Length of body ♂7.5-8.0 mm, ♀ 9.5-10.0 mm; length of pronotum ♂9.5-10.0 mm, ♀ 11.5-12.0 mm; length of hind femur ♂5.0-5.5 mm, ♀ 6.5-7.0 mm.

Holotype female and allotype male, China, Hunan, Yuanling, Jiemuxi National Nature Reserve, 28°45'N, 110°26'E, 650m alt, 06 Aug. 2013, collected by Yu-Hua DONG, IZSNU. Paratypes: Same data, seven male; eight females, collected by Yu-Hua DONG and Yan-Lan Feng, IZSNU (3♂2♀), SCBHU (4♂6♀).

Diagnosis.

This species is similar to Teredorus flavistrial Zheng, 2006, from which it differs in: frontal ridge slight concave between lateral ocelli in profile; posterior process of pronotum reaching one third of hind tibia; width of mid femur equal to tegmina; first segment of posterior tarsus equal to third in length, three pulvilli of first segment of posterior tarsus equal in length. Teredorus flavistrial Zheng, 2006, exhibits frontal ridge straight before lateral ocellus in profile; posterior process of pronotum reaching apex of hind tibia; width of mid femur narrower than width of tegmina; length of first segment of posterior tarsus longer than third segment, third pulvillus of first segment of hind tarsi longer than the first and second pulvilli.

Etymology.

The new species was named after the type locality, Hunan, China.

Habitat.

The new species lives in moist stony on the border of streams in rainforests.

Distribution.

China (Hunan).