Pteronemobius (Pteronemobius) heydenii concolor ( Walker, 1871 )

He, Zhixin, Zhang, Tao & Ma, Libin, 2021, Crickets of subfamily Nemobiinae Saussure, 1877 (Orthoptera: Grylloidea; Trigonidiidae) from China with descriptions of new genera and new species, Zootaxa 5011 (1), pp. 1-70 : 46

Pteronemobius (Pteronemobius) heydenii concolor ( Walker, 1871)

( Figs. 49–50 )

Eneoptera concolor Walker, 1871: 10

Cyrtoxipha concolor, Kirby, 1906: 81

Pteronemobius heydeni concolor, Uvarov, 1926: 163

Type material. China: 1 male, Hainan, Maoyang, Maoxing , viii-8-2009, Libin Ma coll. ; 1 male, Guangdong, Nanling National Forest Park, viii-6-2019, Zhixin He & Tao Zhang coll. ; Thailand: 1 male, Chiang Rai, vii-15-2017, Lingsheng Zha coll. ( SNNU) .

Description. Male. Body size small. Head small, slightly wider than the anterior of pronotum. Rostrum approximately equal to antennal scape in width. Median ocellus round and smallest, lateral ocelli oval-like. Eyes rather large. Postclypeus transverse wide, anteclypeus concave medially. Apical joint of maxillary palpi slightly longer than the third, depressed and widened, with rounded apex; apical joint of labial palpi rod-like, longer than remain- der sections, depressed and widened. Pronotum transverse wide; anterior and posterior margin straight, posterior margin wider than the anterior, middle of both lateral edges slightly concave. Tegmen bearing an oblique vein and three chord veins. Mirror separated as left and right rooms. Apical region degraded, lateral region bearing two Sc branches. Fore tibia only possessing external tympanum, elongate oval-like. Hind tibia bearing four dorsal spurs on two sides respectively, of the inside, first spur stubby and far away from others, the basal of fourth one expanded; apical spurs three inside and one outside respectively.

Genitalia. In dorsal view, epiphallic upper and lower margin concave medially; lateral lobe rhabditiform, inward curved. In lateral view, lateral lobe of epiphallus somewhat short, truncated and slightly curved outward. In ventral view, inner margin of ectoparamere protruded, distal part narrowed.

Female. Unknown.

Coloration. Head yellowish brown, basal of apical joint of maxillary palpi dark. Lateral edges of pronotum dark brown. Tegmen light brown.

Measurements (mm). Male. BL 4.41, HW 1.15, PL 1.01, TL 2.67, HFL 2.74.

Figures

FIGURE 49. P. (P.) heydeni concolor. Habitus photograph of male. Scale bar: 2 mm.

FIGURE 50. Male genitalia of P. (P.) heydeni concolor. A. Dorsal view. B. Lateral view. C. Ventral view.