Sulawesi Onthophagus: seven new species in select groups (Coleoptera: Scarabaeidae: Scarabaeinae)
Author
Krikken, J.
Author
Huijbregts, J.
text
Zootaxa
2017
4238
3
301
334
journal article
36345
10.11646/zootaxa.4238.3.1
030203e2-e6a1-4b59-bfa0-0689bf817b08
1175-5326
345756
D123950C-DF2B-45EE-9966-813339A83491
Onthophagus manguliensis
Boucomont, 1914
(
Figs. 8
,
27
,
53–55
)
Material examined.
Syntype
male (
MNHN
) from
Indonesia
, labelled: "
Sula Mangoli
\ Oct.-Novbr. Doherty", "EX
MUSEO
\ N
.VAN DE POLL", "
Onthophagus
\
manguliensis
\ B. \ COTYPE", "MUSEUM PARIS \ 1938 \ COLL.
A. BOUCOMONT". Additional material (
RMNH
) with a similar
Doherty
collection label (
W. Doherty
collected on the
Sula Islands
around 1890); see also note on
type
status below.
The
35 specimens
examined are as follows:
CENTRAL SULAWESI
: BANGGAI DISTRICT
- Batui:
Seseba
Estate,
80 m
,
9.xi.1989
, Krikken & Van der Blom, sw31, grassland, cattle excrement extracted,
16 in
RMNH
- Matanyo Forest, N of Kayutanyo,
110 m
,
2–4.xi.1985
, Krikken & Van der Blom, sw19a, multistratal evergreen forest, river, 2 human excrement traps,
12 in
RMNH
- Matanyo Forest, N of Kayutanyo,
110 m
,
2–4.xi.1989
, Krikken & Van der Blom, sw19b, multistratal evergreen forest, river, 2 fish traps,
2 in
RMNH
CENTRAL SULAWESI
:
PALU REGION
- Tawaeli-Toboli road (km 29),
250 m
,
20–22.xii.1985
, J. Krikken, pw68a, second-growth forest/coffee, near rivulet, 2 human excrement traps,
2 in
RMNH
SOUTHEAST SULAWESI
: KOLAKA DISTRICT
- Watuwila Mosquito Camp,
1150 m
,
13–15.x.1989
, Krikken & Van der Blom, sw11a, multistratal evergreen forest, 2 human excrement traps,
1 in
RMNH
SULA ISLANDS
- Mangoli, ix-x, Doherty,
1 in
RMNH
- Mangoli, x-xi, Doherty,
1 in
MNHN (syntype)
Description.
Body length
4–5 mm
. Colour symmetrically patterned brown and orange-yellow, slightly variable, largely matt due to microreticulation. Dorsal side with numerous distinct pale-yellow setae.
Clypeus anteromedially with pair of apically round denticles, emargination moderately deep; clypeogenal transition continuous at border; low clypeofrontal ridge present, slightly arcuate; paraocular protrusions between anterior border of eyes slight, more distinct in female; clypeus rugulate-punctate, shiny; remainder of head with sparse, coarse seta-bearing punctures and microreticulation (
x60
).
Pronotum slightly, evenly convex; anterior section of lateral border slightly round, posterior section of lateral border scarcely sinuate; punctation double; entire pronotal derm with abundant, seta-bearing, ocellate primary punctation; setae approximately 3 times puncture diameters, punctures mostly separated by 23 diameters; punctures on shallowly depressed, matt basomedian area slightly less pronounced.
Elytral striae discally well defined, with distinct punctures, mostly separated by 2–4 times their diameter, slightly crenulated on interstriae; interstriae almost flat, microreticulate (
x40
), with numerous seta-bearing granules (asperate,
x40
) arranged in indistinct rows; peripheral surfaces of elytra with distinct yellow patches (like humerus, posterior declivity,
etc
.), remainder brown.
Antennal club gray yellowish brown. Metaventrite disc with numerous seta-bearing punctures on anterior lobe; lateral wings with sparse, seta-bearing, subocellate punctures, microreticulate. Abdominal ventrites each with transverse row of seta-bearing punctures. Pygidium yellow, matt, virtually flat, subtriangular; surface with sparse, seta-bearing punctures; base with transverse ridge.
Protibia with 3+(1) larger denticles, slightly curved, proximal serration with approximately 10 small denticles; spur elongate-acuminate. Femora largely yellow-brown. Mesotibiae and metatibiae and their spurs unmodified. Metatarsomere 1 and spur almost equal in lenth, shorter than tarsomeres 2–5 combined.
Aedeagus,
Fig. 55
.
Variation, sexual dimorphism,
type
status.
Size slightly variable—Boucomont (1914: 23) mentioned “3 ½– 4 ½ mm”. Colour pattern also only slightly variable.
Female
similar to male, as shown in
Figs. 53–54
.
Clearly Boucomont had more specimens before him when he wrote the original description, but lacking details we prefer to maintain their
syntype
(“cotype”) status. Especially since
O
.
manguliensis
-like material requiring study was recently reported from other Moluccan islands (Huijbregts & Krikken 2012).