Duffelsa orientalis ( Distant, 1912 ) Wang & Jiang & Wei, 2023

Wang, Jiali, Jiang, Jinyuan & Wei, Cong, 2023, A new genus, Duffelsa gen. n., with descriptions of three new species and one new combination (Hemiptera: Cicadidae), Zootaxa 5323 (3), pp. 396-408 : 398-400

Duffelsa orientalis ( Distant, 1912) comb. n. ( Fig. 1 )

Tettigia orientalis Distant, 1912: 460 .

Cicada orientalis (Distant) : Metcalf, 1963: 786.

Pomponia noualhieri Boulard, 2005: 10 .

Pomponia orientalis: Lee, 2008: 10 ; Pham & Yang, 2009: 8, 14; Boulard, 2013; Wang & Wei, 2015.

Material examined. 1♁ (holotype, BMNH), Laos : Cochin China (southern Vietnam) (see Discussion), 1911, coll. Distant.

Measurements (in mm; 1♁ 1♀). Body length: ♁36.0, ♀ 31.0; forewing length: ♁45.0, ♀ 44.0; forewing width: ♁15.0, ♀ 14.5; width of head including eyes: ♁10.0, ♀ 9.9; mesonotum width: ♁10.0, ♀ 9.8 (The dimensions of the female are cited from Boulard (2013)).

Description of male.

Head ( Fig. 1A ). Mostly ochraceous. Head including eyes slightly wider than the base of mesonotum.Postclypeus moderately prominent, transverse cross-section angular. Lorum with paired black markings. Anteclypeus with small black patches laterally. Rostrum with apex blackish, extending to hind trochanters.

Thorax ( Fig. 1A ). Pronotum longer than head, almost ochraceous; inner area having no makings; pronotal collar symmetrically with irregular black markings along inner margin of anterior part. Mesonotum fundamentally greyish green with the following black markings: median arrow-shaped fascia reaching anterior margin of cruciform elevation; inwardly curved fascia along each parapsidal suture; paired small spots on scutal depressions and paired markings on anterior angles of cruciform elevation.

Legs ( Fig. 1B ). Fore femora swollen and equipped with three blackish spines beneath: primary spine long, pointed and oblique to femur; secondary spine broader with acute tip, erect; subapical spine short.

Wings ( Fig. 1A ). Hyaline. Forewing with longitudinal fuscous markings on apical cells, with distinct fuscous spots on transverse veins of apical cells 2 and 3; marginal series of minute fuscous spots present on apices of longitudinal veins of apical cells. Hindwing has no markings.

Abdomen ( Fig. 1A ). Cylindrical balloon, noticeably longer than head and thorax together, brown with black markings on posterior margins of tergites. Timbal cover scale-like, ochraceous; timbal mostly concealed by timbal cover. Opercula convex, upside-down triangular, widely separated and longer than wide, extending beyond posterior margin of abdominal sternite II.Abdominal sternites mostly light brown, with slightly-raised tubercle-like projections on centrolateral surface of sternite III. Abdominal sternite VIII oblong, with posterior margin truncated.

Genitalia ( Fig. 1C–D ). Pygofer elliptical in ventral view, light brown with apex ochraceous. Dorsal beak pointed, almost the same height of anal styles. Distal shoulders broadly triangular, distally extended into pointed lobe. Uncus with median lobe bifurcated sub-basally, and the two sub-lobes nearly parallel to each other in ventral view.

Distribution: Vietnam, Thailand.

Remarks. D. orientalis comb. n. has a beautiful green dominant when alive, while the abdomen remains light brown and it emerges in April and May, mainly singing at the end of the afternoon ( Boulard, 2013). This species can be distinguished from D. grandia sp. n. and D. rubida sp. n. by its shorter body length (36 mm), instead of body length longer than 46 mm, and it can be distinguished from D. parvula sp. n. by the forewing with fuscous spots on transverse veins of apical cells 2 and 3, and median lobe of uncus bifurcated sub-basally with the two sub-lobes nearly parallel to each other in ventral view.

Figures

FIGURE 1. Duffelsa orientalis (Distant, 1912) comb. n., holotype, male. A. habitus, dorsal view; B. left fore leg, showing the spines on femur; C. pygofer, ventral view; D. pygofer, lateral view. B–D, after Boulard (2013).