Sogana robustocarina, Liang, Ai-Ping & Wang, Rong-Rong, 2008

Liang, Ai-Ping & Wang, Rong-Rong, 2008, A review of the Oriental planthopper genus Sogana Matsumura 1914 (Hemiptera: Fulgoromorpha: Tropiduchidae) with descriptions of three new species, Zootaxa 1732, pp. 29-44 : 40-41

publication ID	https://doi.org/ 10.5281/zenodo.181357
DOI	https://doi.org/10.5281/zenodo.6231120
persistent identifier	https://treatment.plazi.org/id/03E0878C-FF91-3D47-FF5E-F9BDBABA6381
treatment provided by	Plazi
scientific name	Sogana robustocarina
status	sp. nov.

Treatment

Sogana robustocarina View in CoL sp. nov.

( Figs. 6 View FIGURES 1 – 6 , 16–18, 22 View FIGURES 16 – 23 , 27 View FIGURES 24 – 35 , 40–43 View FIGURES 36 – 47 , 50 View FIGURES 48 – 51 , 51)

Description. Length (from apex of vertex to tip of fore wings): ď 10.5 mm, Ψ 10.5 mm.

General color tawny brown. Vertex ( Figs. 6 View FIGURES 1 – 6 , 16–18 View FIGURES 16 – 23 ) with blackish, I-shaped stripes at apex; central disc suffused with blackish, lateral margins black; lateral areas and all carinae on vertex, pronotum and mesonotum yellowish brown. Frons ( Fig. 17 View FIGURES 16 – 23 ) with 6 pairs of carmine transverse bands, carinae on frons and clypeus orange to reddish. Gena ( Fig. 18 View FIGURES 16 – 23 ) with a black patch. Ocelli ( Fig. 18 View FIGURES 16 – 23 ) suffused with red. Legs brown, trochanters fuscous, apex of femora reddish, postfemora with long fuscous stripes.

Vertex ( Figs. 6 View FIGURES 1 – 6 , 16 View FIGURES 16 – 23 ) with anterior margin broadly convex in dorsal view, lateral areas convex and ridged; median carina percurrent and broadly thickened, diverging medially. Fore wings ( Fig. 22 View FIGURES 16 – 23 ) with 14–15 apical cells (sometimes the left and right fore wings are different) and 5 subapical cells. Spines of hind legs: hind tibia laterally 3, distally 6, basitarsus distally 6.

Proportions. Vertex with ratio of median length to the widest breadth 1.11:1, frons with ratio of median length to the widest breadth 1.67:1, pronotum with ratio of width to median length 4.22:1, pronotum and mesonotum together medially about 1.4 times as long as median length of vertex, fore wings with ratio of length to maximum breadth 3.31:1.

Male genitalia ( Figs. 27 View FIGURES 24 – 35 , 40–43 View FIGURES 36 – 47 , 50, 51 View FIGURES 48 – 51 ) with pygofer very narrow and high, wider dorsally than ventrally, with dorsal posterior margin angularly produced posteriorly in lateral view ( Fig. 27 View FIGURES 24 – 35 ). Anal tube with apical margin oblique concave in dorsal view ( Fig. 40 View FIGURES 36 – 47 ), more or less bent ventrad in lateral view ( Fig. 27 View FIGURES 24 – 35 ). Gonostylus ( Figs. 27 View FIGURES 24 – 35 , 42, 43 View FIGURES 36 – 47 ) 3.31 times as long as broad in lateral view. Aedeagus ( Figs. 41 View FIGURES 36 – 47 , 50, 51 View FIGURES 48 – 51 ) with three stout processes: one anterodorsally directed process arising from left side at apical fifth, which is longer than threequarters of aedeagus, reaching approximately to base of aedeagus, with distinctly teeth along margin and a sharp protrusion on basal margin; the other anterodorsally directed process arising from dorsal margin at apical fifth, with 5–8 stout spines on ventral margin; the third process forked basally, arising below the left process on right side and directed posteriorly; endosoma membranous, distinctly expanded, with 2 processes: the dorsal one stubby, the ventral one slender and cuspidal; phallotrema long and narrow, exposed subapically on the left side ( Figs. 50, 51 View FIGURES 48 – 51 ); periandrium developed, ventrally protruding into a very short, triangular process at apex.

Material examined. Holotype ď, [ MALAYSIA:] British N. Borneo, Kalabakan, Primary forest, 15.XI.1958 (T. C. Maa) ( BPBM). Paratypes. [ MALAYSIA:] 1ď, British N. Borneo, Keningan, 12–17.I.1959 (T. C. Maa); 1Ψ, British N. Borneo, Kalabakan, Primary forest, 10.XI.1958 (T. C. Maa) (both in BPBM).

Etymology. This new species is named for the presence of a robust median carina on the vertex.

Distribution. Malaysia (Borneo).

Remarks. This species is externally similar to S. stimulata Melichar, 1914 from Mentawei Islands, Indonesia in having the vertex with lateral areas between sublateral carinae and lateral carinae not distinctly depressed (shallowly depressed in S. stimulata ; convex in S. robustocarina sp. nov.). It can be distinguished from the latter species by the shape of the median carina of vertex ( Figs. 6 View FIGURES 1 – 6 , 16 View FIGURES 16 – 23 ), pigmentary pattern on vertex ( Figs. 6 View FIGURES 1 – 6 , 16–18 View FIGURES 16 – 23 ), and its distinct aedeagal structure ( Figs. 27 View FIGURES 24 – 35 , 41 View FIGURES 36 – 47 , 50, 51 View FIGURES 48 – 51 ).