Nesocerus trilineatus, Krishnankutty & Dietrich, 2011

Krishnankutty, Sindhu M. & Dietrich, Christopher H., 2011, Taxonomic revision and phylogeny of an endemic leafhopper genus Nesocerus (Hemiptera: Cicadellidae: Idiocerinae) from Madagascar, Zoological Journal of the Linnean Society 162 (3), pp. 499-543 : 503-504

NESOCERUS TRILINEATUS SP. NOV.

( FIGS 3A, B , 6A–H , 16A, B )

Diagnosis: This species is similar in habitus to N. tristriatus in the presence of three black longitudinal stripes on the head, but males can be differentiated from the latter by the presence of aedeagal processes.

Description: Length of male, 4.3 mm; female, 5.5– 6.2 mm.

Coloration: Crown, pronotum, and scutum yellow with three longitudinal black stripes extending to face, middle one narrow not extending posterad of scutellar suture. Antennae with scape and pedicel light brown, flagellum dull yellow. Frontoclypeus with median longitudinal black stripe. Clypeogenal suture bordered with black marking. Gena with black marking. Clypellus completely black. Forewing with dark stripe bordering clavus. Femur with pale brown lines along anterior and posterior margins.

Structure: Clypellus with sides concave, apex narrower than base; in profile flat. Rostrum extending beyond mid coxae. Forewing with r-m1 crossvein distally, extending to ventral apical margin; ducts conspicuous.

Material examined: Holotype male, MADAGASCAR: Province d’Antananarivo, 3 km 41° north-east of Andranomay , 11.5 km, 1300 m, 18°28′24″S, 47°57′36″E, 5.–13.xii.2000, Fisher, Griswold et al., BLF2375, CASENT 5501158 ( CAS) . Paratypes: two females, same data as holotype ( CAS, INHS) ; two females, MADAGASCAR: Province Fianarantsoa, Parc National Ranomafana , radio tower at forest edge, elevation 1130 m, 22°15′3″S, 47°24′25″E, 21.– 24.xii.2001, Harin’Hala, R ., malaise, mixed tropical forest, MA-02-09B-08 (CAS, INHS).

absent. Metatibial setal rows posterodorsal (PD), anterodorsal (AD), and anteroventral (AV) with 14–15, ten, and 11–12 macrosetae, respectively.

Male genitalia: Pygofer in lateral view with falcate posterodorsal process with apex slightly truncate; posterolateral margin with long setae. Subgenital plate in lateral view depressed basally, broadened near apex, long fine setae along lateral margin and dorsum of apex; in ventral view lateral margin strongly convex towards base, evenly narrowed toward apex, with submarginal row of macrosetae along apical half. Style in lateral view with broad apodeme; apophysis abruptly tapered and curved dorsad beyond middle, apex acuminate, in posterior view long. Connective in dorsal view semicircular, fused to preatrium of aedeagus. Aedeagus in lateral view with atrium narrow; socle well developed; shaft in lateral view broad, straight; apex in posterior view narrow, rounded, with pair of long, ventrolaterally directed sinuate processes extending almost half length of shaft; gonopore apical.

Female genitalia: Second valvulae in lateral aspect blade-shaped, preapical portion slightly widened, then narrowed to apex; apical third of dorsal margin with teeth widely spaced basally and narrowly spaced

Etymology: The specific epithet refers to the three longitudinal markings on the head.

Figures

Figure 3. Nesocerus spp. nov., dorsal habitus and face of holotype male. A, B, Nesocerus trilineatus.; C, D, Nesocerus ranomafanaensis; E, F, Nesocerus angulatus; G, H, Nesocerus orbiculatus; I, J, Nesocerus affinis; K, L, Nesocerus sclerophyllus; M, N, Nesocerus bifurcatus; O, P, Nesocerus littoralis; Q, R, Nesocerus fasika; S, T, Nesocerus tulearensis.

Figure 6. Nesocerus spp. nov. Male pygofer in lateral view (A, I, R), male subgenital plate in ventral (B, J, T) and lateral views (C, K, U), aedeagus in lateral (D, L, P, V, Z) and caudal views (E, M, Q, W, A1), style in lateral view (F, N, X), style and connective in dorsal view (G, O, Y), apex of male pygofer in caudal view (H, S). A–H, Nesocerus trilineatus; I–O, Nesocerus ranomafanaensis; P–Q, Nesocerus affinis; R–Y, Nesocerus angulatus; Z–A1, Nesocerus sclerophyllus.

Figure 16. Nesocerus spp. Second valvulae of female. left - lateral view, right - detail of sculpturing. A–B, Nesocerus trilineatus; C–D, Nesocerus sclerophyllus; E–F, Nesocerus tulearensis; G–H, Nesocerus dentatus; I–J, Nesocerus quinquespinosus; K–L, Nesocerus uniprocessus.