Tambocerus acutus, Viraktamath, 2012

Viraktamath, C. A., 2012, Seven new species of the leafhopper genus Tambocerus (Hemiptera: Cicadellidae) from the Indian subcontinent, Zootaxa 3385 (1), pp. 43-61 : 45

Tambocerus acutus sp. nov.

Figs 1, 2 , 24–31 .

Vertex with three pairs of anterior marginal connected spots, dark brown ( Fig. 1 ), pronotum and forewings with brown maculae.

Head as wide as or slightly wider than pronotum. Vertex 2.3 times as wide between eyes as median length. Fore tibia with dorsal setal formula 2+5.

Male genitalia. Pygofer narrowed caudally, dorsal margin angled near apex, without macrosetae but with hairlike short setae, caudal lobe distally serrate both on dorsal and ventral margin, acutely projected posteriorly. Subgenital plate with posterior prolongation, lateral submarginal macrosetae biseriate in basal region and then becoming uniseriate distally, with marginal hair-like setae. Style with well developed apical lobe, apophysis moderately long. Aedeagus with short dorsal apodeme, atrium not ventrally produced, shaft curved dorsally with ventral triangular projection at base in lateral view; in posterior view, shaft broader in basal half than at apical half, with serrations in distal quarter.

Female genitalia. Seventh sternite twice as broad as median length; median lobe on posterior margin produced, acute angled, lateral margin sinuate ( Fig. 31 ).

Measurements. Male 5.85 mm long, 1.54 mm wide across eyes. Female 6.45–6.60 mm long, 1.77–1.85 mm wide across eyes.

Material examined. HOLOTYPE ♂, INDIA: Tamil Nadu: Coonoor, Sim’s Park , 11.viii.1979, I. Dworakowska Coll. ( UASB) . PARATYPE: 10 ♀, data as holotype except S. Viraktamath Coll. ( BMNH, NPC, UASB) .

Remarks. T. acutus sp. nov. has the aedeagal shaft similar to that of T. plumbeus (Distant) , but can be easily distinguished from the latter by the strongly narrowed and serrated apical region of pygofer lobe and the ventral triangular process on the aedeagal shaft base.

Etymology. The species name alludes to the acutely pointed pygofer lobe.

Figures

FIGURES 1–12. Dorsal and lateral views of species of Tambocerus. 1&2. T. acutus sp. nov.; 3&4. T. cholas sp. nov.; 5&6. T. daii sp. nov.; 7&8. T. furcostylus sp. nov.; 9&10. T. viraktamathi Rao; 11&12. T.zahniseri sp. nov.

FIGURES 24–31. Tambocerus acutus sp. nov.: 24. Male pygofer, valve and subgenital plate, lateral view; 25. Pygofer, dorsal view; 26. Valve and subgenital plate, ventral view; 27. Connective, dorsal view; 28. Style, dorsal view; 29. Aedeagus, lateral view; 30. Aedeagus, posterior view; 31. Female seventh sternite, ventral view.