Anabropsis (Spinanabropsis) pengi, Pang & Lu & Bian, 2023

Pang, Siyu, Lu, Xiangyi & Bian, Xun, 2023, Study of the Chinese Members of the Subfamily Anabropsinae (Orthoptera Anostostomatidae) VII: Description of two new subgenera and five new species of Anabropsis from China, Zootaxa 5318 (2), pp. 253-267 : 264-267

Anabropsis (Spinanabropsis) pengi sp. nov.

ḆKDAE

Figures 7–8

Description. Male. Body medium, wingless. Fastigium verticis projecting forward, dorsal surface of head with a distinct longitudinal carina along the midline ( Fig. 7 ). Eyes oval, projecting outwards. Ocelli distinct, medium ocellus longer than wide; lateral ocelli oval, located on both sides of fastigium verticis.Apical segments of maxillary palpi slightly swollen ( Fig. 7A ).

Disc of pronotum rough, anterior margins projecting forward, with an indistinct longitudinal carina; ventral margins of lateral lobes arched, without humeral sinus ( Fig. 7C ). Prosternum with 1 pair of short spines, basal areas separated, apices subacute; mesosternum with 1 pair of spines, basal areas separated, internal margins obliquely outward, apices subacute; metasternal lobes subtriangular, basal areas separated, apices obtuse ( Fig. 7D ).

Fore coxae with 1 short spine, relatively robust; middle coxae swollen, without spines. All femora unarmed on ventral surfaces; genicular lobes of fore and middle femora with apices obtuse; genicular lobes of hind femora with 1 small internal spine, apices of external genicular lobes obtuse, external surface with distinct oblique stripes. Dorsal surface of fore tibiae with 1 internal spur nearly the middle and 1 pair of apical spurs; ventral surface with 3 pairs of spurs, 1 pair of subapical spurs and 1 pair of apical spurs; basal areas of tibiae with opened tympana on both sides ( Fig. 7F–G ). Dorsal surface of middle tibiae with 3 internal spurs, 2 external spurs and 1 pair of apical spurs; ventral surface with 3 pairs of spurs, apices with 1 pair of subapical spurs and 1 pair of apical spurs, equal length between external and internal spurs. Dorsal surface of hind tibiae with 10 internal and 11 external spines, apices with 1 pair of spurs; ventral surface with 2 external spines, subapices with 1 pair of spurs, apices with 1 pair of long and 1 pair of short spurs, the internal spurs nearly the same length as the external one.

First to fourth abdominal tergites with stridulatory pegs ( Fig. 7E ). Posterior margins of ninth abdominal tergite straight. Posterior margin of tenth abdominal tergite arched concave, lateral margins with 1 pair of hooks its apices pointing inward. Paraproctal processes with 1 pair of long processes, directing upwards and backwards from their bases. Cerci conical, approximately equal in length to the paraproctal processes ( Fig. 7K–H ). Subgenital plate shorter than cerci; basal half broad, the lateral margins obviously convex, then narrowing to middle area; ventral surface with 1 pair of parallel longitudinal carinae, between of which concave; posterior margin straight. Styli short, inserted at the apico-lateral margins ( Fig. 7H–J ).

Female. Body medium. Cerci conical, slightly upcurved, apices acute. Basal area of subgenital plate triangular, about 3–4 times as long as apical spine ( Fig. 8J ). Basal half of ovipositor relatively stout, narrowing to apices, upcurved, dorsal valvulae longer than ventral ones, apices of dorsal valvulae subacute ( Fig. 8H–I ).

Coloration. Dorsal surface of head, pronotum and anterior half of abdomen black brown, the other parts brown, with short pale longitudinal stripes ( Figs. 7A–B , 8E, H ). Abdominal sternites and fore and middle femora yellowish; hind femora yellowish, external surface with black vertical stripes ( Figs. 7N , 8D, K ). Ocelli and maxillary palpi yellowish ( Figs. 7A , 8A ). Ventral surface of abdomen tawny. Ovipositor yellowish brown with irregular black spots ( Fig. 7H ).

Measurements (mm). Male: BL 22.1, PL 6.8, HTL 23.3, HFL 22.0. Female: BL 20.0–22.7, PL 5.4–6.3, HTL 18.1–19.4, HFL 17.2–18.7, OvL 8.6–9.5.

Material examined. Holotype: male, Nangunhe Nature Reserve, Cangyuan , Yunnan, June 2, 2021, coll. by Zhiming Li . Paratypes: 1 male, Yakou, Nangunhe, Cangyuan , Yunnan, August 10, 2021, coll. by Zhenyong Huang ; 3 males, Yakou, Nangunhe, Cangyuan , Yunnan, August 10, 2021, coll. by Zhenyong Huang ; 1 female, Yakou, Nangunhe, Cangyuan , Yunnan, August 13, 2021, coll. by Xiangyi Lu, Xiaojuan Huang and Zhenyong Huang .

Distribution. Yunnan (Cangyuan).

Discussion. The main differences between the species and Anabropsis (Spinanabropsis) sinica (Bey-Bienko, 1962) are in: body slightly lighter, dorsal surface of head with longitudinal carina, pronotum relatively rough, dorsal surface of abdomen with longitudinal ridge, the shapes of male and female subgenital plates.

Etymology. The new species is named after Miss Xiaoyu Peng, who helped us collect many Yunnan Province specimens.

Figures

FIGURE 7. Anabropsis (Spinanabropsis) pengi sp. nov.. Male: A. head in frontal view; B–C. head and pronotum: B. dorsal view, C. lateral view; D. thoracic sternites in ventral view; E. stridulatory pegs in lateral view; F–G. fore tibia: F. external view, G. internal view; H–J. apex of abdomen: H. dorsal view, I. ventral view, J. lateral view; K–M. paraproctal process in lateral view; N. habitus in lateral view.

FIGURE 8. Anabropsis (Spinanabropsis) pengi sp. nov.. Female: A. head in frontal view; B–C. head and pronotum: B. dorsal view, C. lateral view; D. thoracic sternites in ventral view; E. stridulatory pegs in lateral view; F–G. fore tibia: F. external view, G. internal view; H–J. apex of abdomen: H. lateral view, I. dorsal view, J. ventral view; K. habitus in lateral view.