Nacolus Jacobi, 1914

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 : 472

Genus Nacolus Jacobi

Type species. Nacolus gavialis Jacobi , by original designation.

Diagnosis. Head anteriorly produced in front of eyes, longer than combined lengths of pronotum and mesonotum, nodulose, with dorsal crest-like ridge and with lateral ridges, near apex dorsally upturned; crown with median carina and lateral carinae mesad of ocelli, becoming lateral. Face without carina except where it is dorsally upturned. Clypellus broad basally narrowed gradually to apex, extending beyond genal curve and anteriorly convexly rounded. Antennal ledge prominent with lobe-like projection. Labium extending beyond pro coxae. Pronotum with median, and two sublateral carinae, lateral margin rounded devoid of carina except near posterior margin, obliquely concave. mesoscutellum small. Hind wing costal margin with 11 stout setae in proximal half ( Fig. 14H, I ). Pro tibiae dilated. Meta femur distal macrosetae 2+0; meta tibia triangular in cross section, with setal row PD 8, AD 8, AV 8. Metabasitarsomere plantar surface with 7 stout setae with prominent alveoli in oblique row and a very few narrow seta, distal transverse row with 6 platellae flanked on either side by a seta ( Fig. 15F ). Male pygofer depressed, elongate, without ventral process, dorsally deeply bilobed. Subgenital plates with convex lateral lobe, apex conically rounded about half as long as pygofer. Style as in Hatigoria , not extending beyond posterior margin of connective, with apical setae on apophysis. Connective articulated with aedeagus, longer than broad. Aedeagus with well-developed dorsal apodeme and elongated atrium, shaft tubular with apical gonopore.

Remarks. Tang and Zhang (2019b) revised and redescribed the genus adequately and hence only a diagnosis of the genus is given here. They also synonymized six species of the genus with N. tuberculatus (Walker) and suggested that the variations found in the head and male genitalia characters and coloration are intraspecific.

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.