Orthogonius taghavianae Tian, Deuve & Felix

Tian, Mingyi, Deuve, Thierry & Felix, Ron, 2012, Orthogonius species and diversity in Thailand (Coleoptera, Caraboidea, Orthogoniini), a result from the TIGER project, ZooKeys 164, pp. 51-90 : 52-53

Orthogonius taghavianae Tian, Deuve & Felix sp. n. Figures 216

Diagnosis.

Large sized, even elytra intervals much wider than odd ones, and covered with dense and coarse punctures, head and pronotum intricately wrinkled or striate; aedeagus distinctly constricted at subapex in dorsal view.

Length: 19.0 mm; width: 7.6 mm. Habitus as in Figure 2.

Description.

Head and pronotum densely and intricately wrinkled, impunctate, elytra with even intervals densely punctate; microsculptural meshes densely isodiametric on elytra, and irregular on pronotum.

Head moderate, slightly longer than wide (HW/HL=1.05), eyes large, strongly prominent, frons rather flat, vertex convex, neck well-marked; labrum straight at frontal margin, sexsetose, clypeus more or less square, bisetose; palpi normal; maxillar palpomeres 3 and 4 subequal in length, labial palpomere 2 longer than palpomere 3; ligula narrow, bisetose at apex; mentum and submentum each with a pair of setae; palpiger short, asetose; antennae extending to 1/7 of elytra from base, densely pubescent from basal 1/4 of antennomere 4; antennomere 3 as long as 4.

Pronotum strongly transverse, PW/PL=1.85, widest at about middle; both fore and hind angles broadly rounded; front and hind margins well beaded; lateral expanded margins wide, smooth and reflexed; transverse impressions well marked, basal foveae moderate.

Elytra broad and strongly convex; EL/EW=1.58; sides nearly parallel; widest at about middle, apex roundly truncate, strongly sinuate near inner angle which is pointed; base well bordered; shoulders more or less square; striae deep, punctate-striate, intervals convex; even intervals much wider than odd ones (almost twice) and with coarser punctures which extended to the subapical portion, odd intervals with a row of fine and sparse punctures; interval 3 with three discal setiferous pores, and additional two at apical portion; interval 5 with two setae near base; interval 7 narrow and carinate before middle, with seven setiferous pores.

Legs stout, fore tibia with outer angle very sharp and strongly protruded, outer margin distinctly serrate; middle tibia distinctly dilated, and strongly curved in median portion; hind tibia elongate, with tibial spurs short and more or less blunt; hind tarsomere 1 longer than 2, tarsomeres 3 and 4 subequal, tarsomere 4 bilobed; hind femur moderately dilated, with five posterior setae; all tarsal claws pectinate.

Prosternal process well bordered at apex, middle coxa with several setae in median portion; abdominal ventrite VII of male complete at apex.

Male genitalia (Figure 16): Elongate, enlarged at about middle portion, ventral margin sinuate, dorsal opening large and long, abruptly truncate near apex; in dorsal view, apical part narrow, distinctly constricted before apical lamella, apical lamella elongate, about 2.2 times as long as wide, blunt at apex.

Female. Unknown.

Remarks.

This species is a member of the Orthogonius alternans species group, but with distinctive aedeagal structure.

Material examined.

Holotype: male, "Thailand: Nakhon Nayok: Khao Yai NP, entrance of Hnong Pak Chee Trail, 14°27.167'N, 101°21.850'E, 758 m, 5-12.v.2007, Malaise traps, Pong Sandao leg., T2263", deposited in QSBG.

Etymology.

This new species is named in honour of Ms Azadeh Taghavian, a curator of the Coleoptera collection in MNHN, Paris, in thanks for her help in so many ways.

Distribution.

Thailand. Known only from the type locality.