Hyalessa scutata Puissant & Lee

Puissant, Stéphane & Lee, Young June, 2016, Description of a new species of the genus Hyalessa China (Hemiptera: Cicadidae: Sonatini) from Yunnan, China, with a key to the species of Hyalessa and a calling song analysis for two Hyalessa species, Zootaxa 4114 (4), pp. 434-446 : 435-439

Hyalessa scutata Puissant & Lee , sp. nov.

( Figs 3 , 4 )

Type material. Holotype: male, “Alt. 2.500 m, Nord Yunnan, Tibet, Xue Shan” [label rectangular, white, with black margin, manuscript], “ VII.1998, Chine, J.-M. Bousquet leg.” [label rectangular, white, with black margin, manuscript]. Paratype: female, same data as holotype. The holotype and the paratype will be deposited in the collections of the Muséum national d’Histoire naturelle, Paris.

Etymology. The specific name is the Latin feminine adjective meaning “armed with oblong shields” in reference to the considerably large male opercula.

Diagnosis. Head and thorax black with light-colored marks. Fore wing with distinct infuscations. Basal membrane and hind wing jugum mostly gray. Male opercula mostly fuscous; extending beyond anterior one-third of sternite III. Male abdomen much wider than mesonotum. Timbal cover comparatively large, with gap between timbal covers about as wide as timbal cover. Uncal lobe evenly narrow.

Description of the holotype male and the paratype female. Head black with a pair of ochraceous spots on posterior margin of head. Distance between lateral ocelli and eyes larger than three times distance between lateral ocelli. Postclypeus castaneous with black fasciae along transverse grooves which are connected medially to form a pair of longitudinal black fascia. Anteclypeus black with median longitudinal castaneous fascia. Lorum black with ochraceous margin. Rostrum extending slightly beyond posterior margin of hind coxae. Labrum blackish. Mentum ochraceous. Labium ochraceous but fuscous on apex. Gena black. Antennae dark brown.

Thorax: Inner area of pronotum black with median longitudinal “!” shaped ochraceous mark and other distinct and indistinct ochraceous marks. Pronotal collar ochraceous with two pairs of black spots at lateral inner corners and a slightly black margin at lateral posterior corners in the male. Lateral pronotal collar not dentate but more or less slightly crenellated. Mesonotum black with 6 ochraceous spots: a pair of oblique triangular spots on anterior parts of submedian sigilla, a pair of postero-submedian spots, two pairs of longitudinally arranged small spots on anterior part of lateral sigilla, a pair of large antero-lateral spots, and a pair of postero-lateral spots. Parapsidal sutures brownish. Cruciform elevation castaneous with black tips on arms. Metanotum ochraceous. Thoracic sternites ochraceous but basisternum 2 black with median band ochraceous.

Legs: All legs with yellowish fasciae circled by black areas, tibiae with anterior part yellowish and posterior part blackish except fore tibiae predominantly blackish. Fore femora holding three spines with a tertiary spine very small.

Wings: Fore wings hyaline for the male but slightly tinged with yellowish for the female. Median and cubitus anterior veins originating in two distinct points at basal cell. Radius and subcostal vein ochraceous. Radial, radiomedial, medial, and mediocubital crossveins with infuscations, but in male, infuscations on medial and mediocubital crossveins indistinct. Roundish infuscation present on each hind margin of radius posterior, median 1–4, and cubitus anterior 1 and 2 veins. Coloration of basal veins and distal veins predominantly dark brown, with eight apical cells. Basal cell scarcely tinged. Basal membrane and hind wing jugum gray. Hind wing transparent for the male but slightly tinged with yellowish for the female, except for brown jugum and dark plaga. Veins brownish, with six apical cells.

Operculum transversely elliptical, extending beyond anterior one-third of sternite III; fuscous. Opercula overlapped medially.

Abdomen wide and short, distinctly shorter than head and thorax together; tergites 1 to 3 black with some brown spots notably in the lateral part; tergites 4 through 8 black. Sternites III through VII brownish in the female but dark in the male except sternite III brown. Timbal cover globose, with gap between timbal covers about as wide as timbal cover. Timbal concealed with timbal cover in dorsal view.

Genitalia: Pygofer ranging from ochre to dark, elliptical in ventral view. Apex of pygofer without dorsal beak but with a large median notch. Uncal lobes bifurcate and curved downwards, long in even breadth, with apices rounded, parallel, touching each other medially. Basal and upper lobes absent.

Measurements (n = 1 male and 1 female, in millimeters). Median length of body: male 34.0, female 34.0. Median length of body including fore wing: male 57.0, female 56.0. Median length of head and thorax together: male 18.0, female 18.0. Median length of abdomen: male 16.0, female 16.0. Width of head including eyes: male 12.0, female 12.0. Width of mesonotum: male 13.5, female 13.4. Width of posterior margin of abdominal tergite 3: male 15.0, female 15.0. Length of fore wing: male 49.0, female 50.0. Width of fore wing: male 16.0, female 17.0. Wing span: male 105.0, female 106.0. Distance between ocellus and compound eye of the same side: male 2.40, female 2.42. Distance between the posterior lateral ocelli: male 0.69, female 0.75.

Figures

FIGURE 3. Hyalessa scutata sp. nov., Yunnan, China. A, Holotype, male, dorsal habitus. B, Holotype, male, ventral habitus. C, Paratype, female, dorsal habitus.

FIGURE 4. Male pygofer of Hyalessa scutata sp. nov., holotype, Yunnan, China and the comparison of its uncal lobes with those of Hyalessa fuscata (Distant, 1905). A, Ventral view of male pygofer of Hyalessa scutata sp. nov. B, Detail of the uncal lobes of Hyalessa scutata sp. nov. in ventral view, not separated from each other. C, Detail of the uncal lobes of Hyalessa fuscata, (Korea), separated from each other at the apex of the uncus. D, Detail of the uncal lobes of Hyalessa fuscata (Korea), separated from each other from middle to apex of the uncus (Korea).