Nesocerus tristriatus, 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 : 531-532

NESOCERUS TRISTRIATUS SP. NOV.

( FIGS 4K, L , 10H–N )

Diagnosis: This species is similar in habitus to N. trilineatus , but may be separated by the following combination of characters: style apex acuminate with slight bend subapically; aedeagus without apical processes; shaft broad near apex; in caudal view with bifurcated ventrolateral flange extending from base to midlength.

Description: Length of male, 5.6 mm.

Coloration: Crown, pronotum, and scutum yellow with three longitudinal black stripes extending to face and beyond scutellar suture. Antennae with scape and pedicel black, flagellum light brown. Clypeogenal suture, laterofrontal suture, gena, and lorum with black markings. Clypellus mostly black with tiny yellow spot near base. Legs yellow with black line along posterior margin. Forewing mostly hyaline.

Structure: Clypellus with sides parallel, apex narrower than base, in profile slightly convex. Rostrum extending beyond mid coxae. Forewing with r-m1 crossvein absent. Metatibial setal rows PD, AD, and AV with 16, nine, and 12 macrosetae, respectively.

Male genitalia: Pygofer broad with falcate posterodorsal process with pointed apex in lateral view, posterolateral margin with long setae. Subgenital plate and connective similar to those of N. trilineatus . Style in lateral view with broad apodeme; apophysis abruptly tapered beyond middle, apex acuminate with slight bend subapically, in posterior view extending dorsad reaching beyond half of aedeagal shaft. Aedeagus in lateral view with atrium narrow, socle well developed, shaft in lateral view broad, slightly sinuate near middle, broadened near roundly flattened apex, without processes, with flange arising near base and extending to midlength of shaft, apex of flange in posterior view bifurcate, shaft in posterior view slender. Gonopore apical.

Material examined: Holotype male, MADAGASCAR: Province Fianarantsoa, Miandritsara Forest, 40 km south of Ambositra , 825 m, 20°47′33″S, 47°10′32″E, 28.i.–9.ii.2005, M. Irwin, R. Harin’Hala, malaise trap, in low altitude rainforest, MA-29-08 ( CAS).

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

Figures

Figure 4. Nesocerus spp. nov., dorsal habitus and face of holotype male. A, B, Nesocerus recurvus.; C, D, Nesocerus dorsalis; E, F, Nesocerus dentatus; G, H, Nesocerus unimaculatus; I, J, Nesocerus nigrum; K, L, Nesocerus tristriatus; M, N, Nesocerus brevipinguis; O, P, Nesocerus nanus; Q, R, Nesocerus mananarensis; S, T, Nesocerus quinquespinosus.

Figure 10. Nesocerus spp. nov. Male pygofer in lateral view (A, H, O), male subgenital plate in ventral (B, I, P) and lateral views (C, J, Q), aedeagus in lateral (D, K, R) and caudal views (E, L), style in lateral view (F, M, S), style and connective in dorsal view (G, N, T). A–G, Nesocerus nigrum; H–N, Nesocerus tristriatus; O–T, Nesocerus brevipinguis.