Orthogonius baconii

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 : 119-120

Key to males of species of the baconii species group

1 Eyes very large and prominent, head wider than long, aedeagus broadly expanded medially ( baconii species group)....... 2

- Eyes large or quite small, head longer than wide, aedeagus not expanded medially............. other Orthogonius species

2 First hind tarsomere shorter than 5th, median lobe of aedeagus slightly expanded ventrally at middle portion, apex distinctly sharp in lateral view, apical lamella pointed at apex........................................... O. nepalensis Habu

- First hind tarsomere longer than 5th, median lobe of aedeagus distinctly expanded ventrally at middle portion, apex more or less

blunt in lateral view, apical lamella obtuse at apex........................................................... 3 3 Median lobe of aedeagus stouter, strongly expanded ventrally at middle portion ( Figs 11–12 )............ O. rogueti n. sp.

- Median lobe of aedeagus more slender, moderately expanded ventrally at middle portion, apical lamella stout, at least as wide as long............................................................................................ 4

4 Apical lamella of median lobe of aedeagus elongated, longer than wide, broader at apex ( Figs 4–5 ).... O. baconii Chaudoir

- Apical lamella of median lobe of aedeagus stout, as long as wide, narrower at apex ( Figs 7–8 )......... O. ceylanicus n. sp.

Figures

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

FIGURES 3 – 5. Orthogonius baconii Chaudoir (3. Habitus; 4. Aedeagus, right lateral view; 5. Apical lamella, dorsal view)

FIGURES 6 – 8. Orthogonius ceylanicus n. sp. (6. Habitus; 7. Aedeagus, right lateral view; 8. Apical lamella, dorsal view)