Traiguma Distant, 1908

Viraktamath, C. A. & Yeshwanth, H. M., 2023, Leafhopper subfamily Hylicinae (Hemiptera: Auchenorrhyncha: Cicadellidae) in the Indian subcontinent with description of new species, Zootaxa 5319 (4), pp. 451-500 : 474-475

Genus Traiguma Distant

Type species. Traiguma nasuta Distan , by original designation. Diagnosis. Crown produced in front of eyes, longer than median length of pronotum, tuberculate, sometimes curved dorsally either apically widened or pointed. Eyes prominent, projecting laterally Ocelli on tubercles mesad and slightly in front of eye. Transclypeal sulcus not well-developed. Clypellus broad basally narrowed apically, extending beyond genal curve, apically concave in middle. Lora narrow long, reaching transclypeal suture dorsally. Gena broad, concealing proepisternum laterally. Pronotum with lateral margins feebly carinate posteriorly. Mesoscutellum with posterior half gibbous. Hind wing costal margin with 6 stout setae in proximal half ( Fig. 14N, O ). Fore tibiae moderately dilated. Meta femur distal macrosetae 2+0. Meta tibial row PD 9, AD 8±1, AV 14±2; metabasitarsomere plantar surface with one stout seta with prominent alveolus in addition to narrow thin setae, distal transverse row with 5–6 platellae flanked by one stout seta( Fig. 15H ). Male pygofer without ventral process, Aedeagus with length of shaft more or less subequal to atrium and dorsal apodeme, shaft more or less of uniform width with or without angular expansion on dorsal or ventral surface, gonopore subapical to apical on ventral surface.

Description. As described by Viraktamath & Webb (1991) with the following additional characters or modifications. Forewing with two parallel sided claval veins without cross veins; hind wing costal margin with 6 stout setae in proximal half. Metabasitarsomere with one stout seta with prominent sclerotized alveolus, distal transverse row with 5–6 platellae.

Remarks. Viraktamath & Webb (1991) adequately redescribed the genus and hence it is not repeated here. The genae are broad and conceal the proepisternum. Rexamination of the forewings of the three species indicated that there are two claval veins, not one as erroneously stated by Viraktamath & Webb (1990). The genus is at present restricted to the high elevations in South India. The three included species can be recognized by the following key.

Figures

FIGURES 14A–O. Forewings (A, D, G, J, M), hind wings (B, E, H, K, N) and magnified view of costal margin (C, F, I, L, O) of Hylicinae. A–C, Hylica scutealba Tang & Zhang; D–F, Kalasha manikya sp. nov.; G–I, Nacolus tuberculatus (Walker); J–L, Sudra manipurensis sp. nov.; M–O, Traiguma verticalis Distant.

FIGURES 15A–K. Metabasitarsomere plantar surface (A–H) and female sternite VII (I–K) of Hylicinae. A, Balala mekongia Tang & Zhang; B, Hatigoria zhangi sp. nov.; C, Hemisudra indica sp. nov.; D, Hylica scutealba Tang & Zhang; E, Kalasha manikya sp. nov.; F, Nacolus tuberculatus (Walker); G, Sudra manipurensis sp. nov.; H, Traiguma verticalis Distant: I, Hylica paradoxa Stål; J, Hylica scutealba Tang & Zhang; K, Traiguma verticalis Distant.