Onthophagus manguliensis Boucomont, 1914

Krikken, J. & Huijbregts, J., 2017, Sulawesi Onthophagus: seven new species in select groups (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 4238 (3), pp. 301-334 : 324

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).

Figures

FIGURES 1 – 8. Sulawesi Onthophagus species, oblique habitus. 1, O. bisscrutator, holotype male from Toraut. 2, O. scrutator, male from Moramo. 3, O. bongkudai, holotype male from Moajat. 4, O. sangirensis, male from Toraut. 5, O. holosericus, male from Marena, 6, female from Marena. 7, O. sopu, holotype male from Sopu. 8, O. manguliensis, male from Mangoli. Scale lines approximately 1 mm.

FIGURES 25 – 30. Sulawesi Onthophagus species, dorsal forebody. 25, O. sopu, holotype male from Sopu. 26, O. sopu, paratype male from Sopu. 27, O. manguliensis, male from Mangoli. 28, O. annulopunctatus, paratype male from Mogogonipa. 29, O. hollowayi, holotype male from Dumoga. 30, O. seseba, holotype male from Batui. Scale lines approximately 1 mm.

FIGURES 47 – 55. Sulawesi Onthophagu s body parts, male, female. 47 – 52, O. sopu, all Sopu, paratype male (47, 51), holotype male (48 – 50), paratype female (52). 53 – 55, O. manguliensis, male Mangoli (53), male Matanyo (55), female Matanyo (54). — 47, 52, 53 - 54, head full-face, 48, left elytron dorsal, 49, protibial upper side, 50, metatibial upperside, 51, 55, aedeagus lateral. Scale lines approximately 1 mm.