Arnobia hainanensis, Liu, Chun-Xiang, 2011

Liu, Chun-Xiang, 2011, Brief Summary of Holochlorini (Orthoptera: Tettigoniidae: Phaneropterinae), with Description of Seven New Species from China, Zootaxa 2931, pp. 35-52 : 37-38

Arnobia hainanensis sp. nov.

(Plate 1a, c–f, i–j)

Holotype: male, China: Hainan Island: Baisha, Yinggeling Nature Reserve, 2009. V.11, Coll. Dang Lihong ( IZAS).

Paratype: China: Hainan Island: Jianfengling, 1 female, 1982. VII.6, Coll. Liu Yuanfu ( IZAS); 1 male, 1983. IV.7, Coll. Gu Maobin ( IZAS).

Description. Size median. Male stridulatory area with posterior margin sinuate; stridulatory vein cambered; stridulatory file on the underside of left tegmen with about 150 sparsely arranged fine teeth (Plate 1a). Male tenth abdominal tergum normal, with apical margin approximately truncated (Plate 1d). Male supraanal tergite perpendicularly deflexed. Male cerci very long, incurved, robustest at the basal 1/5 part, then equally incurved and gradually acuminated, with apical spine indistinct (Plate 1d,e). Male subgenital plate short, with the basal margin widest, then gradually narrowed, concave ventrad, apical margin with distinct median lobule smaller than lateral apical ones (Plate 1f).

Ovipositor less than twice as long as the length of pronotum, slightly incurved, compressed; lateral surface smooth and both margins thoroughly not serratulate, with apex of dorsal margin blunt (Plate 1i). Female subgenital plate triangular, with apex wide rounded (Plate 1j).

Color. Dark green. Pronotal disc and lateral lobe densely covered brown spots. Tegminal dorsal part respectively with a large dark brown spot in basal, middle and apical area as to male; as to female, basal part and apical part also with a dark brown spot; every cell between radial vein and cubital vein with a large dark brown spot. Dorsal surface of anterior femur with three large stripes which are aggregated with many black dots, and anterior tibiae densely covered black dots, and middle and hind femur and tibiae densely covered brown dots.

Measurements (in mm). Length of body: male 25.0, female 28.0; length of pronotum: male 5.8, female 6.5; length of tegmen: male 40.0, female 41.0; largest width of tegmen: male 10.0, female 10.5; length of hind wing: male 45.0, female 46.0; length of posterior femur: male 20.0, female 24.0; length of ovipositor 9.0.

Etymology. The name refers to the type locality of the species.

Discussion. The new species resembles A. vietensis Gorochov, 1998 and A. ocellata ( Ingrisch, 1994) in the coloration of tegmen and shape of male subgenital plate, but differs from those by the size slightly larger and female subgenital plate with apical margin wide obtuse. And it also differs from Arnobia vietensis by the male subgenital plate with a slightly larger median lobule and female tegminal dorsal part with a pair of rather large dark spots, it also differs from A. ocellata by female ovipositor rather short.

Distribution. China (Hainan Island).

PLATE 1. Arnobia species. a, c–f, i–j. A. hainanensis sp. nov.; b, g–h. A. guangxiensis sp. nov.. a, b. stridulaltory file underside of male left tegmen; c. tegminal dorsal part of female in dorsal view; d. male abdominal apex in lateral view; e. male abdominal apex in lateral view; f, h. male subgenital plate in ventral view; g. male cerci in dorsal view; i. female abdominal apex in lateral view; j. female subgenital in dorsal view.