Duolandrevus (Eulandrevus) hongkongae Otte, 1988

He, Zhuqing & Ma, Libin, 2015, A new species of subgenus Eulandrevus Gorochov, 1988 (Orthoptera: Gryllidae: Landrevinae) from China, Zootaxa 4013 (4), pp. 594-599 : 597-598

Duolandrevus (Eulandrevus) hongkongae Otte, 1988

( Figs. 1 , 2 A, 3B, 3D, 3F)

Type specimen information. Type locality (holotype): Tai Po Kai Forestry Station, Hong Kong, China. Deposited at Bishop Museum, Honolulu, Hawaii, U.S. (not examined).

Materials examined. China: 3 males and 1 female, Guangdong, Fengkai, Heishiding, Oct. 3, 2014, coll. Zhang Tao ( SNNU); 1 male, Guangdong, Zhaoqing, Dinghushan, Oct. 5, 2014, coll. Zhang Tao ( SNNU); 2 males, Guangdong, Zhaoqing, Jiulonghu, Oct. 31, 2014, coll. Zhang Tao ( SNNU).

Distribution ( Fig. 1 ). China (Guangdong).

Measurements. BL 20.08±0.09, HW 5.12±0.47, PL 3.02±0.21, PW 4.94±0.30, FWL 6.36±0.38, MTL4.55, HFL 12.63±0.40, HTL 7.91±0.62, CL 12.63±1.80

Diagnosis. Large body size. Tegmina shorter than uncovered portions of abdomen with 5 oblique veins ( Fig. 2 B); apical area armed with reticulated veins. Fore tibia with both inner and outer tympanum present, roundly shaped. Epiphallic lateral lobes possessing bifurcated tips (Fig. 3D).

Description. Body size large for genus. Head large and transversely broad. Occiput somewhat convex, longitudinally short. Vertex inclined to rostrum. Rostrum wide and flattened, as wide as antennal scape. Labrum rhombus-like with rounded margin. End section of maxillary palpi broad and depressed, with expanded apex. End section of labrial palpi depressed and angular-like, and longer than the remainder sections.

Pronotum more pubescent and narrower than head. Pronotal anterior margin concave and arc-like; posterior margin almost straight. Pronotal disc without obvious lateral edge and roundly inclined to lateral lobes. Lateral lobe bearing a ridge along the margin and dividing hind corner.

Hind wings absent. Tegmina shorter than uncovered portions of abdomen with 5 oblique veins; apical area armed with reticulated veins.

Tympanum of fore tibia rounded, the inner larger than the outer. Hind tibia armed with spines halfway on the basal portion and with subapical spurs at the apical portion, numbered as 4:4 (inner: outer).

Abdomen pubescent, armed with thin, dense and binding hairs. Supra-anal plate simple and trapezoid-like. Subgenital plate fusiform with acute tip. Cercus narrowing apically, armed with long hairs, binding hairs and shield-like hairs. Genitalia: Epiphallus somewhat narrowed and constricted gradually toward apex. Epiphallic median lobes paired, small and apically acute; epiphallic lateral lobes bifurcate apically. Epiphallic proximal margin bisinuate. Ectoparamere bifurcate into top and bottom lobes and present a notch between lobes. Top lobe rounded but subacute, with a shallow and broad notch.

Coloration ( Fig. 2 B). Body brownish, light-colored in antennal scape, legs and the dorsum of elytra.

Remarks. D. (E.) hongkongae was reported from China and D. (E.) dendrophilus reported from Vietnam. They are very similar in shape at the apical ends of the epiphallic lateral lobes. Both of their tips are bifurcated and pointed upward; only the outside margins at the bottom of the tips are different from each other.

Figures

FIGURE 1. Known distribution of the Chinese Duolandrevus (Eulandrevus) species. Part of data D. hongkongae from Ma (2011) and Otte (1988).