Orthogonius rogueti Tian et Deuve

Tian, Mingyi & Deuve, Thierry, 2016, A review of the baconii species group of the termitophilous genus Orthogonius Macleay (Coleoptera: Carabidae: Orthogoniini), Zootaxa 4093 (1), pp. 118-126 : 125

Orthogonius rogueti Tian et Deuve , n. sp.

Figs 1–2, 9–12

Description. Length: 11.0 mm in male, 12.0 mm in female; width: 4.7 mm in male, 5.2 mm in female. Habitus as in Figs 9–10 .

Head, pronotum, elytra, and underside of head dark brown, underside of thoraces, ventrites, legs, antennae and palps yellow, mandibles and lateral expanded margins of pronotum light dark brown; moderately shiny in both male and female; head obscurely striated, with sparsely punctate on base of head, and disc of pronotum, coarsely punctate near basal foveae and along lateral expanded margins at base, elytra with dense and small punctures.

Head wide, HW/HL=1.14, eyes almost same convex in male and female. Pronotum almost twice as wide as long, PW/PL=1.88, PbW/PfW=1.33; widest at a little behind middle. Elytra widest at about middle, EL/EW=1.50, slightly expanded at both sides, not parallel-sided. Fore tibia with more slender but outer angle less developed in male than in female ( Figs 1–2); 1st hind tarsomere distinctly loner than 5th.

Male genitalia ( Figs 11–12 ): The median lobe of aedeagus very short, stout and robust, extremely expanded medially on both dorsal and ventral aspects, almost 1/3 as thick as long, dorsal opening long, nearly 2/3 as long as aedeagus; apex broadly blunt; apical lamella short and broad, almost as long as wide, gently constricted towards apical tip.

Remarks. This new species is easily separated from other congeners by its robust and strikingly expanded aedeagus, and its broader and wider apical lamella.

Materials examined. Holotype. ♂, labeled “ India: Tamil Nadu, Viluppuran Dt.: Thely, 25/ 26.VII.2010, aux UV, Roguet D.”, in MNHN; Paratype, 1♀, labeled “ India: Tamil Nadu, Viluppuran Dt.: Thely, 2.VII.2007, aux lumieres, Roguet D.”, in Coll. D. Roguet.

Etymology. Patronym, it is dedicated to Mr. D. Roguet, collector of the type specimens.

Distribution. Southern India.

Figures

FIGURES 9 – 12. Orthogonius rogueti n. sp. (9. Habitus, male; 10. Habitus, female; 11. Aedeagus, right lateral view; 12. Apical lamella, dorsal view)