A revision of the African species of Odontolochini Stebnicka & Howden, 1996 (Coleoptera: Scarabaeidae: Aphodiinae)
Author
Stebnicka, Zdzisława T.
text
Zootaxa
2009
2230
1
15
journal article
10.5281/zenodo.190265
17a4a6c5-1898-483f-a6c6-da1b25d25cf5
1175-5326
190265
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
.