Odontolochus villiersi Petrovitz, 1966

Stebnicka, Zdzisława T., 2009, A revision of the African species of Odontolochini Stebnicka & Howden, 1996 (Coleoptera: Scarabaeidae: Aphodiinae), Zootaxa 2230, pp. 1-15 : 14

Odontolochus villiersi Petrovitz, 1966

( Figs 13, 18–19 )

Odontolochus villiersi Petrovitz, 1966: 1694 –1696 — Dellacasa 1988: 214 (catalog).

Material examined. Holotype male [ The Democratic Republic of the Congo] ' Congo, Dimonika Mayumbe, I.1964, Mission A. Descarpentries & A. Villiers 1964–1964 ( MNHN); paratypes (3): 2 — same data as holotype; 1 — Equateur, Bamania, I.1958, P. Hulstaert ( MHNG).

Other specimens (6). Ghana: Kumasi, 10.VI.1967, S. Endrodi-Younga ( MHNG); Tafo, IX–X.1968, E.O. Boafo ( CNC). Gabon: Makokou, IV.1971, at light, J. Mateu ( MHNG); Belinga, 2.III.1969, 10.II.1953, H. Coaffait ( PBC).

Diagnosis. Pronotum subquadrate, anterior angles obtuse, prominent, lateral edge sinuate, ended by acute basal denticle ( Fig. 13 ); lateral fossulae deep, base straight with row of large punctures. Elytra suboval, intervals at same level, carinate, median carina of each interval obtuse, opaque. Protibia in male of different shape than in female ( Figs 18–19 ). Odontolochus villiersi is most similar to O. gestroi and O. ferenczi but it differs from both these species by its less acutely prominent basal denticle and the elytral intervals more strongly costate.

Description. Length 2.5–3.0 mm. Body piceous, opaque. Head strongly opaque with fine punctures throughout, clypeal margin finely reflexed. Pronotum subquadrate, tumid anteriorly, anterior angles obtuse, prominent, lateral edge sinuate, ended by acute, small basal denticle, lateral fossulae deep, base straight with row of large punctures; fine to moderate punctures in anterior third of pronotum become larger and less close posteriorly, separated by about one time their diameter. Elytra suboval, convex, humeral denticles minute; striae deep, strial punctures elongate; intervals similarly developed, carinate, median carina of each interval opaque. Ventral sclerites alutaceous; mesosternal median area triangular, triangle alutaceous, smooth, lateral grooves deep, parallel; disc of metasternum convex, shallowly finely punctured, lateral area with large, close, round punctures; abdominal sternites shorter at middle than on sides, irregularly coarsely fluted-punctate, pygidium deeply eroded with longitudinal carina. Mesofemora and metafemora parallel-sided, with scattered minute punctures; basal metatarsomere equal in length to upper tibial spur and to three following tarsomeres combined.

Male. Protibia a little narrower than in female, two first lateral teeth approximate, apical tooth slightly incurved, terminal spur seta-like ( Fig. 18 ).

Female. Lateral teeth of protibia equally separated, not incurved; terminal spur longer than in male ( Fig. 19 ).

Distribution. The Democratic Republic of the Congo, Gabon, Ghana.

Figures

FIGURES 6 – 21. Figs 6 – 13, pronotum, lateral outline, 6. O. basilevskyi Endrödi; 7. O. spinicollis (Harold); 8. O. oberthueri (Clouët); 9. O. costatus Endrödi; 10. O. gestroi (Clouet); 11. O. burgeoni Boucomont; 12. O. setulosus Endrödi; 13. O. villiersi Petrovitz; Figs 14 – 19, right protibiae, 14. O. oberthueri (Clouët), male; 15. O. oberthueri (Clouët), female; 16. O. gestroi (Clouët), male; 17. O. ferenczi Endrödi, male; 18. O. villiersi Petrovitz, male; 19. O. villiersi Petrovitz, female; Figs 20 – 21, aedeagus in lateral view, 20. O. spinicollis (Harold); 21. O. paucus Schmidt.