Rhaphidophora impressa Wang, Qin & He, 2024

Di, Mi, Qin, Yan-Yan, Shen, Zi-Hao, Zhang, Tao, Wang, Han-Qiang, Li, Kai & He, Zhu-Qing, 2024, Six new species of Rhaphidophora from China (Orthoptera: Rhaphidophoridae: Rhaphidophorinae), European Journal of Taxonomy 925 (1), pp. 76-99 : 87-90

Rhaphidophora impressa Wang, Qin & He sp. nov.

urn:lsid:zoobank.org:act:B38A9455-48AE-4366-8224-D53E4FE774BE

Figs 6–8

Chinese name

圆Ḥkõ

Diagnosis

The new species is similar to those species bearing a simple male epiproct. It differs from the previous species by the apex of the male epiproct only plump without being vertically expanded ( Fig. 8B ), and bears a circular imprint at the bottom of the epiproctal concavity ( Fig. 8A ); from R. setiformis Qin, Jiang, Liu & Li, 2018 by the apex of the male epiproct swell not depressed ( Figs 8B , 9A ), the concavity of the male epiproct being not narrow and prolonged from base to apex; and from R. duxiu in the shape of the male epiproctal concavity and the length of the female subgenital plate.

Etymology

The new specific epithet is derived from the Latin ‘ imprimo ’ and stands for the circular imprint of the epiproctal concavity in the male.

Material examined

Holotype

CHINA • ♂; Hunan Prov., Yueyang, Pingjiang, Fushoushan National Forest Park ; alt. 1079 m; 18 Sep. 2016; Ri-Xin Jiang, Ji-Bao Jiang, Sheng-Nan Liu and De-Yao Zhou leg.; SEM CAS 14098455 .

Paratypes

CHINA • 1 ♂; same locality as for holotype; alt. 1070–1270 m; 15 Sep. 2018; Yan-Yan Qin and Sai-Nan Zhang leg; SEM CAS 14098453 • 1 ♀; same collection data as for preceding; SEM CAS 14098454 .

Description

Male

BODY SIZE. Medium to small.

HEAD. Fastigium of vertex divided into pair of plate-like processes by longitudinal furrow ( Fig. 6B ). Eyes protruding outward, reniform, situated near upper part of external margin of antennal sockets ( Fig. 6A ); lateral ocelli situated at lateral base of rostral tubercles, suborbicular, nearly occupying three fourths of lateral margin of rostral tubercles ( Fig. 6C ); median ocellus situated between antennal sockets, oval ( Fig. 6A ). Maxillary palpi strong, apical segment longer than subapical segment, apex inflated, almost spherical.

THORAX. Anterior margin of pronotum straight, posterior margin convex ( Fig. 6B ), posterior part of ventral margin of lateral lobes arched, posterior margin emarginate ( Fig. 6C ); Posterior margin of mesotergum slightly projected, posterior part of ventral margin of lateral lobes emarginate, arched; posterior margin of metanotum straight ( Fig. 6C ).

LEGS. Fore coxa inflated, dorsally with 1 spinule; fore femur with 1 apical spine on internal genicular lobe ( Fig. 6B ); ventral surface of fore tibia with 2 external and 1 internal spine, apex with 1 pair of spines on ventral surface. Anterior margin of middle coxa dorsally with 1 pair of spiniform processes; mid femur with 1 apical spine on internal and external genicular lobe separately; mid tibia dorsally with 1 pair of spines and 1 pair of apical spines, ventrally with 2 pairs of external spines and 1 pair of apical spines. Hind femur ventrally unarmed, with 1 spinule on internal genicular lobe; hind tibia dorsally with 17–18 spinules on both dorsal margins, subapical area dorsally with 1 pair of spines, apex with 1 pair of dorsal long spines and 2 pairs of shorter ventral spines asymmetrically, the largest apical spine slightly surpassing tip of terminal basitarsal spine ( Fig. 6G ); hind tarsus laterally compressed, basitarsus with 2 spinules and a terminal spine on dorsal surface, dorsal tip longer than ventral edge ( Fig. 6G ).

ABDOMEN. Abdominal tergite without processes, posterior margin of tenth abdominal tergite emarginate ( Fig. 6D ). Epiproct similar to that of previous species but with basal portion trapezoidal, more distal portion elongately triangular, concavity between dorsolateral carinae drop-shaped, base of concavity widened and expanding to middle forming circular imprint, apex of concavity constricted and narrowing to epiproctal end ( Figs 6D , 8A ). Subgenital plate roughly semicircular, sub apex with pair of stout styli with apex enlarged ( Fig. 6E–F ). Cerci elongated, basal part wider than apical part, nearly conical, apex obtuse ( Fig. 6E ).

Female

Similar to male. Hind basitarsus with 4–5 spinules and a terminal spine on dorsal surface. Subgenital plate transverse and short, near semicircular, hind margin pointed in middle ( Figs 7A , 8C ). Ovipositor longer than half length of hind femora, narrower from base to apex gradually, evenly upcurved, ventral margin serrated near apex ( Fig. 7B ).

COLORATION. Body reddish brown in thoracic tergites and dark brown with yellowish patches in rest part; face pale brown, eyes darkish, ocelli pale. Legs tawny, external surface of hind femora with oblique darkish stripes and pale patches.

Measurements (mm)

BL: ♂ 13.0–15.0, ♀ 14.0; PL: ♂ 5.5–6.2, ♀ 5.7; FFL: ♂ 5.5–6.5, ♀ 5.4; HFL: ♂ 14.0–14.5, ♀ 15.0; HTL: ♂ 12.0–13.5, ♀ 13.8; HBL: ♂ 3.0–3.2, ♀ 3.5; OvL: ♀ 8.0.

Distribution

China (Hunan).

Figures

Fig. 6. Rhaphidophora impressa Wang, Qin & He sp. nov., holotype, ♂ (SEM CAS 14098455). A. Head in frontal view. B–C. Head and thorax in dorsal and lateral view, respectively. D–F. Apex of abdomen in rear dorsal, lateral and ventral view, respectively. G. Left hind tarsus in outer lateral view. H. body in lateral view.

Fig. 7. Rhaphidophora impressa Wang, Qin & He sp. nov., paratype, ♀ (SEM CAS 14098454). A. Subgenital plate of female in ventral view. B. Ovipositor in lateral view. C. Body in lateral view.

Fig. 8. Line drawing of Rhaphidophora impressa Wang, Qin & He sp. nov. A. Male epiproct in dorsal view. B. Male epiproct in lateral view. C. Renatured hind margin of female subgenital plate in rear ventral view.

Fig. 9. Line drawings. A. Rhaphidophora setiformis Qin, Jiang, Liu & Li, 2018, male epiproct in lateral view. B. Rhaphidophora xishuang Gorochov, 2012, apex of male epiproct in lateral view (after Gorochov 2012).