Deltonotus wuzhishanensis, Lin & Zheng, 2014

Lin, Li-Liang & Zheng, Zhe-Min, 2014, Taxonomic study of the genus Deltonotus Hancock (Orthoptera: Cladonotidae) with description of a new species, Zoological Systematics 39 (4), pp. 576-578 : 577-578

Deltonotus wuzhishanensis sp. nov. ( Figs 1–7 )

Diagonosis. The new species is allied to Deltonotus vietnamensis Storozhenko, 2011 and D. hainanensis Zheng & Liang, 1985 . The main differences with D. vietnamensis are listed in the following key. It also differs from D. hainanensis in: width of vertex 2 times as width of an eye; frontal ridge with deep excision between eyes in lateral view, apex of hind pronotal process triangular depressed in the middle; the third pulvillus of the 1st hind tarsi larger than the first and second.

Description. Body small. Fastigium of vertex almost straight, not produced in front of eyes; width of vertex 2 times as width of an eye; frontal ridge with two deep excisions in lateral view; frontal ridge scutiform between basal part of antennae, with of frontal ridge about 2 times as width of basal segment of antennae. Antennae filiform, 13-segmented, inserted between lower margin of eyes, length of a segment in the middle 4 times as its width. Eyes global, protruding; lateral ocelli located between the crotch of frontal ridge. Pronotum compressus, tectiform, anterior margin produced over the head; upper margin arc-shaped in lateral view, anterior angle obtuse, apex slight produced before head; hind process short, reaching 2/3 of hind femur or basal part of supra-anal plate, apex triangular depressed in the middle; posterior angles of lateral lobes pointed back and downward, apex rounded; posterior margin of lateral lobes with only one depression. Tegmina and hind wings absent. Upper margin of fore femur entire, lower margin slight undulated; upper and lower margin of mid femur entire; hind femur stubby, with length 2.3 times as its width, upper carina with two protuberances near the apex, antegenicular denticles acute, genicular denticles obtuse, lower carina undulated. Outer side of hind tibia with 6 spines, inner side with 5–6 spines; length of the first segment of hind tarsi 2 times as that of the third segment, upper side of the 1st hind tarsi straight, the third pulvillus larger than the first and second, apices obtuse. Supra-anal plate long triangular, lateral margin contracted in © Zoological Systematics, 39(4): 576–578 the middle. Cercus short conical, small, only reaching half of the supra-anal plate. Subgenital plate long conical.

Body dark brown, hind tibia black, with 2 white rings in the middle.

Female. Unknown.

Measurements. Length of male: body 8.5–9.0 mm, pronotum 5.5–6.0 mm, hind femur 6.0– 6.2 mm.

Holotype ♂, Hainan, Wuzhishan, Shuiman , 23–25 May 2007, coll. Yi-Bin Ba and Jun-Tong Lang. Paratype 1♂, same data as holotype .

Etymology. The specific name is derived from the type locality “Wuzhishan”.

Key to species of the genus Deltonotus Hancock

1. Pronotum with velvety black spot on each side near middle. Distributed in South India......................... D. gibbiceps ( Bolívar, 1902) Pronotum without black lateral spots ................................................................................................................................................... 2

2. Frontal ridge in lateral view with deep excision between eyes ............................................................................................................3 Frontal ridge in lateral view with weak excision between eyes............................................................................................................ 5

3. Fastigium of vertex in dorsal view far produced in front of eyes. Distributed in South India....................... D. humilis Hebard, 1929 Fastigium of vertex in dorsal view not produced in front of eyes ........................................................................................................4

4. Anterior angle of prontum acute in lateral view; lower margin of fore femur with two large teeth; lower margin of hind femur entire; upper margin of 1st hind tarsi with fine dentations, three pulvilli almost with equal length; lateral margin of supra-anal plate in male straight; subgenital plate in male short conical. Distributed in Vietnam...................................... D. vietnamensis Storozhenko, 2011 Anterior angle of prontum obtuse in lateral view; lower margin of fore femur slight undulated; lower margin of hind femur undulated; upper margin of 1st hind tarsi straight, the third pulvillus of the 1st hind tarsi larger than the first and second; lateral margin of supra-anal plate in male contracted in the middle; subgenital plate in male long conical.Distributed in China..................... .................................................................................................................................................................. D. wuzhishanensis sp. nov.

5. Hind femur stout, with length about 2.0 times as its wide; lower margin of femora undulated, upper margin with fine serrations. Distributed in China.................................................................................................................. D. hainanensis Zheng & Liang, 1985 Hind femur slender, with length 2.5–3.0 times as its width..................................................................................................................6

6. Anterior process of pronotum reaching only middle of eyes. Distributed in Sri Lanka............................. D. cristatus Hancock, 1907 Anterior process of pronotum covered the head completely. Distributed in Sri Lanka..................... D. subcucullatus ( Walker, 1871)

Figures

Figs 1–7. Delonotus wuzhishanensis sp. nov., ♂. 1. Head, front view. 2. Body, dorsal view. 3. Head and pronotum, lateral view. 4. Fore femur. 5. Hind femur. 6. Hind tarsi. 7. Terminalia, lateral view.