Oxyligyrus zoilus ( Olivier, 1789 )

López-García, Margarita M., Gasca-Álvarez, Héctor J. & Amat-García, Germán, 2015, The scarab beetle tribe Pentodontini (Coleoptera: Scarabaeidae: Dynastinae) of Colombia: taxonomy, natural history, and distribution, Zootaxa 4048 (4), pp. 451-492 : 468-469

Oxyligyrus zoilus ( Olivier, 1789)

( Figs. 57 – 62 )

Scarabaeus zoilus Olivier, 1789: 45 .

Oxyligyrus punctulatus Endrödi, 1966: 526 .

Description. Habitus as in Fig. 57 . Length 24.0 mm (♂), 23.0–25.0 mm (♀). Width 15.0 mm (♂), 12.5–13.5 mm (♀). Color black to brown dark ( Fig. 57 ). Head: Frons deeply concave; surface strongly rugose and punctate on apex; vertex nearly smooth, with sparse deep punctures. Frontoclypeal suture fine; with 2 transverse tubercles as a lateral curved carina each side. Eye canthus glabrous. Clypeus strongly rugose and grooved; triangular, apex strongly narrowed, acute and upturned. Interocular distance equals 3.0–3.2 times the transverse ocular diameter. Antennal subequal to antennomeres 2–7. Mandibles without teeth, curved to slightly bilobed. Pronotum: Surface with deep, minute to small punctures evenly dispersed, with a median transverse line completely smooth behind fovea. Apical tubercle small ( Fig. 58 ). Subapical fovea deep (males) ( Fig. 61 ) to shallow (females), U shaped, rugose and deeply punctate. Scutellum: Nearly smooth, with 6–8 deep, minute, sparse punctures. Elytra: Surface with deep, large and ocellate punctures, some smaller between intervals; pairs of double rows not distinct; elytral suture present as a line of continues punctures. Pygidium: Surface strongly punctate, punctures small, deep, evenly dispersed, slightly denser on base and lateral angles. Surface strongly convex in males, nearly flat in females. Legs: Protibia tridentate; teeth subequally spaced. Male protarsus simple, not enlarged. Apex of metatibia crenulate; apical margin with 5 spinules. Apex of first metatarsomere slightly triangularly expanded. Venter: Prosternal process long, extending beyond procoxae; apex slightly convex, subquadrate, posterior third raised and flat, bordered by long yellow setae. Parameres: Base rounded and broad; lateral teeth long and prominent; apex strongly narrowed; apices slightly dilated ( Figs. 59–60 ). Spiculum gastrale: Not examined.

Diagnosis. This species is similar to O. cayennensis but can be differentiated by having a deep concavity on the frons, male protarsus simple, protibia tridentate, and pronotal apical tubercle smaller. Additionally, the shape of the parameres is distinctively different between both species.

Locality records. ( Fig. 62 ) 11 specimens, 2♂, 9♀. Specimens were seen from ICN, MPUJ, UNAB. Amazonas (2): Leticia (1). Leticia, km 2, vía Tarapacá, U. Nacional, IMANI (1). Caquetá (1): El Paujil (1). Meta (5): Puerto López, Vda. Alto Menegua (1). Puerto López, Vda. Remolino, Centro Cafam Llanos, 55 km de Puerto Gaitán (1). San Martín (3). San Miguel, Fca. Yarmato (1). Putumayo (2): Puerto Leguízamo, PNN La Paya, Cabaña Chagra (2).

Temporal distribution. Jan (1), March (4), April (1), September (1), October (1), December (2). No data (1).

Distribution. Guyana, Colombia, Brazil, and Bolivia ( Endrödi 1969).

Natural history. Two individuals were collected by using Malaise traps. Specimens were found in Amazonia and Orinoquia region, between 8– 500 m.

Figures

FIGURES 57 – 62. Oxyligyrus zoilus. 57) habitus in dorsal view, 58) habitus in lateral view, 59) parameres in frontal view, 60) parameres in lateral view, 61) habitus in frontal view, 62) locality records in Colombia.