Clinophaestus robustus Storozhenko

Storozhenko, Sergey Yu., 2013, Review of the subfamily Tripetalocerinae Bolívar, 1887 (Orthoptera: Tetrigidae), Zootaxa 3718 (2), pp. 158-170 : 164-167

Clinophaestus robustus Storozhenko , sp. nov.

Figs. 22–39

Material. Holotype—male, Thailand: Uthai Thani Province, settlement Thap Sela, 14–15 August 2009, coll. V.G. Bezborodov (in the Zoological Institute, St.-Petersburg). Paratypes – Thailand: 1 female, Nakhon Ratchasima Province (Karat), Khorn Buri Lake, 2 August 2009, coll. V.G. Bezborodov (in the Zoological Institute, St.- Petersburg); 1 female, Phetchaburi Province, 50 km SW Phetchaburi, environs of National Park Kaeng Krashan, 400 m, 30–31 July 1996, coll. A.V. Gorochov (in the Zoological Institute, St.-Petersburg); 4 males, Chiang Mai Province, Chiang Mai, Huai Hongkhrai Royal Development Study Center, 18°47′2″ N, 98°59′ E, 500–700 m, 22– 24 June 2013, coll. P. Dawwrueng (in the Department of Entomology, Kasetsart University, Bangkok); 1 female, Chantaburi Province, Kaeng Hang Maeo, 50–100 m, 26 May 2013, coll. K. Yimyoo & P. Pawangkanun (in the Department of Entomology, Kasetsart University, Bangkok).

Description. Male (holotype). Body robust. Width of fastigium of vertex near anterior margin of eyes almost equal to width of one eye from above. Frontal ridge in lateral view broadly rounded near the antennal sockets, below excised; in frontal view with distinctly divergent and serrated lateral carinae; width of frontal ridge near the base of antennae 1.3 times less than width of antennal socket; median furrow distinct above the median ocellus. Antennae 2.5 times longer than fore femora; 10th segment of antennae narrow, 2.0 times as long as wide, 5th–9th segments broad, 1.5–1.8 times as long as wide. Prozona 1.3 times as long as wide. Median carina of pronotum in lateral view slightly concave in prozona; lateral carinae broadly rounded between shoulders, almost reaching the apex of posterior process. Fore femur 3.1 times as long as wide, with gentle sinuate and finely dentate lower carina, upper carina almost straight; mid femur 2.5 times as long as wide. First segment of fore and mid legs considerably shorter than second one (without claws); second segment not swollen. Hind femur laterally compressed. Upper side of hind tibia with 4 outer and 5 inner teeth. First tarsal segment of hind legs 1.1 times shorter than 3rd segment (without claws). All basal pads of first tarsal segment of hind legs equal. Epiproct narrowly triangular. Subgenital plate in ventral view 1.1 times as long as wide. Cerci with narrowly pointed apex, 3.2 times as long as wide near the base.

Body blackish brown. Head from above brown; lateral sides of fastigium of vertex black; face blackish brown with transverse V-shaped yellowish stripe below eyes; eyes black; antennae black, but two apical segments white. Pronotum brown with numerous black spots. Fore and mid femora brown with black spots; fore and mid tibiae brown with two black rings; 1st segment of fore and mid tarsi black, 2nd segment whitish with black apex; claws light brown. Hind femora blackish brown with light brown transverse stripe near the middle; hind femora black with light brown teeth; tarsi whitish, apices of all segments blackish; claws light brown.

Female (paratypes). Similar to male, but larger. Fastigium of vertex 1.3 times broader than width of one eye from above. Frontal ridge as in male; width of frontal ridge near the base of antennae 1.7–2.0 times more than width of antennal socket; median furrow distinct. Antennae 2.6–2.8 times longer than fore femora; 10th segment of antennae 2.0 times, 5th–9th segments 1.6–1.8 times as long as wide. Prozona 1.5 times as long as wide. Median and lateral carinae of pronotum as in male. Fore femur 2.8–2.9 times, mid femur 2.6–2.7 times as long as wide. Fore and mid tarsi as in male. Hind femur 1.9–2.0 times as long as wide. Upper side of hind tibia with 5–6 outer and 5– 6 inner teeth. Hind tarsi as in male. Epiproct narrowly triangular, with deep longitudinal median furrow. Subgenital plate 1.1 times as long as wide. Cerci 3.0 times as long as wide near the base. Upper valve of ovipositor 2.5–2.8 times longer than its maximum width. Lower valve of ovipositor 4.1–4.9 times longer than its maximum width.

Coloured as male, but face without transverse yellowish stripe. Subgenital plate, epiproct and ovipositor brown.

Measurements (in mm). Length of body (from anterior margin of fastigium of vertex to the apex of the abdomen) male 8.5, female 8.9–9.5 (without ovipositor); antenna male 4.8, female 5.1–5.3; pronotum male 6.5, female 6.9–7.5; fore femur male 1.9, female 1.9–2.0; mid femur male 2.0, female 2.2; hind femur male 4.8, female 5.0–5.5; ovipositor 1.0–1.1.

Distribution. Thailand ( Uthai Thani, Nakhon Ratchasima, Phetchaburi, Chiang Mai and Chantaburi provinces).

Etymology. From Latin ‘ robustus ’—firm.

Figures

FIGURES 22 – 34. Clinophaestus robustus sp. nov. 22, male pronotum, lateral view; 23, the same, dorsal view; 24, male left antenna, dorsal view; 25, female head and anterior part of pronotum, lateral view; 26, female head, frontal view; 27, the same, dorsal view; 28, male hind femur, lateral view; 29, male fore femur, lateral view; 30, female hind tarsus, lateral view; 31, the same, dorsal view; 32, male apex of abdomen, lateral view; 33, female apex of abdomen, lateral view; 34, the same, ventral view.

FIGURES 35 – 39. Clinophaestus robustus sp. nov. 35, male body (holotype), lateral view; 36, the same, dorsal view; 37, female head, frontal view; 38, female body, lateral view; 39, male body (paratype), lateral view.