Evacanthus repexus (Distant)

Viraktamath, C. A. & Webb, M. D., 2018, Revision of the evacanthine leafhoppers (Hemiptera: Cicadellidae: Evacanthinae) of the Indian subcontinent, Zootaxa 4386 (1), pp. 1-78 : 20

Evacanthus repexus (Distant)

Figs 7 E–H , 29 A–G , 30 A–F .

Euacanthus repexus Distant 1908: 228 .

Evacanthus repexus (Distant) : Metcalf 1963: 43; Datta 1973: 215–216 Plate 2, Figs 1–6 ; 1988: 55–57, figs 100–103; Ishihara 1979: 99–100, Figs 1–6 . Rao 1990: 26–28, Fig. 5 a–h .

Black. Anterior and posterior margins of vertex ochraceous. Face black except ochraceous upper part. Pronotum black with extreme lateral and posterior margins ochraceous. Legs ochraceous. Forewings black, costal margin, inner and claval margins narrowly ochraceous or stramineous.

Head narrower than pronotum. Pronotum without median impressed transverse line.

Male genitalia. Pygofer lobe with dorsal margin convex, posterodorsal angle produced into rounded lobe, ventral process slightly exceeding pygofer. Subgenital plate and style as in E. extremus . Connective with stem twice as long as arms. Aedeagus with well developed ventral extension of atrium, caudoventral margin in basal region mucronate and with ventral angular projection, dorsolateral lobes well developed, processes short and rounded lobe-like, reaching at most half-length of shaft, gonopore apical.

Female genitalia. Posterior margin of seventh sternite with broad, medially slightly convexly produced.

Measurements. Male 5.7–5.8 mm long, 1.5 mm wide across eyes and 1.6 mm wide across posterolateral angles of pronotum. Female 6.7–6.8 mm long, 1.7 mm wide across eyes and 1.8 mm wide across posterolateral angles of pronotum.

Material examined. INDIA: Lectotype ♀ (here designated), “ Kurseong ” “ Euacanthus repexus Dist. type [Distant’s hw]” “ Distant Coll. 1911-383” “ Type H.T. [red edged disc] ; paralectotype ♀, “Kurseong” (BMNH). Himachal Pradesh: 14 ♂, 30 ♀, 19 Km S Manali, 1500m, 11.x.1979, C.A. Viraktamath (8 ♂, 17 ♀), Ghorpade (6 ♂, 13 ♀) ; 3 ♂, 15 Km NE Manali 2438 m, 12.x.1979, C.A. Viraktamath ; 20 ♂, 26 ♀, Manali, 1828, 4.1968, A.S. Sohi (7 ♂, 4 ♀), 10–11.x.1979, Ghorpade (2 ♂, 6 ♀) and C.A. Viraktamath (11 ♂, 16 ♀) ; 1 ♀, Kufri , 2600 m, 15.x.1979, C.A . Viraktamath. West Bengal: 3 ♂, 1 ♀, Darjeeling , 8000 ft, 7.viii.1979, C. S. Wesley ; 3 ♀, same data but collected on 8.iv.1981 by K.B. Rustogi ; 2 ♂, Tiger Hill , 2660 m, 24.x.1981, C.A. Viraktamath ; 1 ♂, Kurseong , 20.x.1981, C.A. Viraktamath ( UASB) ; 1 ♀, Kurseong “replexus Dist. var. [Distant’s hw]”.

Remarks. Originally described from an unspecified number of specimens (syntypes) with the following data: “Sikhim; Kurseong (Ind. Mus.)”. The topotypical variety also described by Distant has been seen (see Material examined). This species can readily be recognized by its black face and largely black pronotum. The processes of dorsolateral lobes reach about mid length of the shaft. This is the most common species in North India throughout the Sub-Himalayan region and also on the Simla Hills. E. convolutus and E. manaliensis also resemble this species in coloration and structure and are sympatric. They can only be differentiated by the male genitalia characters. The females of these species at present are indistinguishable. E. repexus may turn out to be a species complex as there is considerable variation in the shape of the aedeagus ( Figs 29 A–F , 30 A–G ). A careful study of the populations throughout the Sub-Himalayan range along with their host plants is necessary for elucidating this species complex.

Figures

FIGURES 1 A–R. Species of Evacanthini, habitus: A–B. Male Apphia flava sp. nov.; C–D. Male Bundera acutivertex sp. nov.; E–F. Male B. bambusana Chen & Li; G–J. Male and female Carinata midfasciana Wang & Li; K–L. Male Concavocorona kambaiti sp. nov.; M–P. Male and female Cunedda phaeops Distant; Q–R. Male Evacanthus albipennis sp. nov. [A, C, E, G, I, K, M, O, Q, dorsal views; B. D, F, H, J, L, N, P, R, lateral views].

FIGURES 2 A–R. Species of Evacanthini, habitus: A–B. Male Evacanthus bellus (Distant).; C–D. Male E. convolutus sp. nov.; E–F. Male E.. distinctus sp. nov,; G–H. Male E. manaliensis sp. nov.; I–J. Female E. militaris (Distant); K–L. Male E. yeshwanthi sp. nov.; M–N. Male Mainda praeculta Distant; O–P. Male Onukia echina sp. nov.; Q–R. Male O. flavopunctata Wang & Li. [A, C, E, G, I, K, M, O, Q, dorsal views; B.D, F, H, J, L, N, P, R, lateral views].

FIGURES 3 A–R. Species of Evacanthini, habitus: A–B. Male Shortcrowna rubrostriata sp. nov.; C–F. Male and female Onukia albiclypeus. G–J. Male and female Onukindia aruna sp. nov.; K–N. Male and female O. compressa sp. nov.; O–P. Male O. connexa sp. nov.; Q–R.Male Risefronta albicincta Wang & Li. [A, C, E, G, I, K, M, O, Q, dorsal views; B. D, F, H, J, L, N, P, R, lateral views].

FIGURES 4 A–V. Species of Evacanthini. A–J Habitus: A–B. Female Risefronta albicincta Wang & Li (Distant).; C–D. Female Striatanus delta sp. nov.; E–F. Male Taperus indicus sp. nov.; G–H. Female Taperus sp.; I–J. Male Vangama steneosaura Distant. [A, C, E, G, I, dorsal views; B. D, F, H, J, lateral views]. K–V. Faces: K. Male Apphia flava sp. nov.; L. Bundera acutivertex sp. nov.; M.B. bambusana; N–O.Male and female Carinata midfasciana; P.Concavocorona kambaitisp. nov.; Q–R. Male and female Cunedda phaeops; S. Evacanthus albipennis sp. nov.; T. Evacanthus bellus; U. E. convolutus sp. nov.; V.E. distinctus sp. nov..

FIGURES 5 A–U. Faces of species of Evacanthini.A.Evacanthus extremus; B. E. militaris; C. E. manaliensis sp. nov.; D. E. yeshwanthi sp. nov.; E. Mainda praeculta; F. Onukia echina sp. nov.; G. O. flavopunctata; H. Shortcrowna rubrostriata sp. nov.; I–J. Male and female Onukia albiclypeus; K–L. Male and female Onukindia aruna sp. nov.; M. O. compressa sp. nov.; N–O.Male and female O. connexa; P–Q.Risefronta albicincta; R. FemaleStriatanadelta sp. nov.; S. Taperus indicus sp. nov.; T. Taperus sp.; U. Vangama steneosaura.

FIGURES 6 A–Y. Evacanthini types and label data. A–D. Apphia burmanica Distant; E–H. Apphia assamensis (Ramakrishnan); I–L. Apphia himalayana (Distant); M–P. Bundera venataDistant; Q–T. Evacanthus bellus (Distant); U–Y.E. extremus (Walker).

FIGURES 30 A–F. Evacanthus repexus, male from Manali. A. Genital capsule, lateral view; B. Style, lateral view; C. Connective, dorsal view; D. Style, dorsal view; E. Aedeagus, posterodorsal view; F. Aedeagus and part of connective, lateral view.

FIGURES7 A–Z, AA–BB.Evacanthini types and label data.A–D. Evacanthus militaris (Distant); E–H.E.repexus (Distant); I–L. Mainda praeculta Distant; M–P. Onukindia connexa (Distant); Q–T. Pythamus biramosusViraktamath & Webb; U–X. P. bispinosus Viraktamath & Webb; Y–X, AA–BB. P.montanus Viraktamath & Webb.

FIGURES29 A–G. Evacanthus repexus(Distant),topotypic male.A. Genital capsule, lateral view; B. Pygofer ventralprocess, mesal view; C. Female sternite VII, ventral view; D. Style and connective, dorsal view; E. Style, lateral view; F. Aedeagus, posterodorsal view; G.Aedeagus and connective, lateral view.