Oocyclus petra

Short, Andrew Edward Z., Greene, Luke & Garcia, Mauricio, 2013, New species and new records of the hygropetric water beetle genus Oocyclus Sharp from South America (Coleoptera: Hydrophilidae), Zootaxa 3741 (3), pp. 349-358 : 356-357

Oocyclus petra SHort & García, 2010

New material examined (128): GUYANA: Upper Takutu-Upper Essequibo District: Lethem (25 km SE), Kumu Falls, 3°15.9’N, 59°43.6’W, 4.iv.1994, leg. P. J. Spangler, pothole in boulder beside stream (3 exs., USNM); same locality and data except: wet boulders (5 exs., USNM); Lethem (30 km SE), Moco Moco River, 3°18.2’N, 59°39’W, 29.iv.1995, leg. P. J. Spangler & S. A. Perry, (1 ex., USNM). SURINAME: Sipaliwini District: Raleighvallen Nature Reserve, plateau below Voltzberg, 4.68277°N, 56.18770°W, 96 m, 28.vii.2012, leg. Short, Maier, & McIntosh, small seepage with algae, SR12-0728-01B (1 ex., SEMC); same locality and data except: small rock pool formed in seepage, SR12-0728-01D (1 ex., SEMC); same locality and data except: rock pool, SR12-0728-01G (3 exs., SEMC); same locality and data except: large rock pool, SR12-0728-01H (2 exs., SEMC); Raleighvallen Nature Reserve, base of Voltzberg, 4.67387°N, 56.1847°W, 86 m, 29.vii.2012, leg. Short, Maier, McIntosh, & Kadosoe, flowing seep over rock, SR12-0729-01A (5 exs., SEMC, NZCS). VENEZUELA: Bolivar State: Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 7.vii.2010, leg. Short, Arias, & Tellez, rock pools, VZ10-0707-01A (2 exs., SEMC); Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 7.viii.2010, leg. Short, Arias, & Tellez, seep scrubbing, VZ10-0708-01C (2 exs., SEMC); Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 8.vii.2010, leg. Short, Arias, & Tellez, stream on side, VZ10-0708-01B (5 exs., SEMC); Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 8.vii.2010, leg. Short, Arias, & Tellez, seep scrubbing, VZ10-0708-01C (6 exs., SEMC); Between Pijiguaos and Caicara, approx. 15 km NE Pijiguaos, 6.96507°N, 66.6065°W, 51 m, 9.vii. 2010, leg. Short & Tellez, detritus flotation, VZ10-0709-01B (1 ex., SEMC); Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 9.vii.2010, leg. Short, Arias, & Tellez, seeps on outcrop, VZ10-0709-02A (10 exs., SEMC); Between Pijiguaos and Caicara, approx. 15 km NE Pijiguaos, 6.96507°N, 66.6065°W, 51 m, 9.vii. 2010, leg. Short, Arias, & Tellez, seep scrubbing, VZ10-0709-01A (13 exs., SEMC); Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 9.vii.2010, leg. Short, Arias, & Tellez, seeps on outcrop, VZ10-0709-02A (18 exs., SEMC); Los Pijiguaos, outcrop/ morichal, 6.59362°N, 66.8206°W, 60 m, 9.vii.2010, leg. Short, Arias, & Tellez, seeps on outcrop at night, VZ10-0709-03A (5 exs., SEMC); Cuchivero, W, rock outcrop by Rio Cuchivero, 7.45835°N, 65.8682°W, 45 m, 10.vii.2010, leg. Short, Arias, & Tellez, seeps on granite outcrop, VZ10-0710-01A (14 exs., SEMC); Campamento Rio Aro, by Rio Aro, 7.62405 °N, 64.1387°W, 90 m, 11.vii.2010, leg. Short, Arias, & Tellez, seep scrubbing, VZ10-0711-01B (11 exs., SEMC); Campamento Rio Aro, by Rio Aro, 7.62405°N, 64.1387°W, 90 m, 11.vii.2010, leg. Short, Arias, & Tellez, seep/ rocks pools at night, VZ10-0711-01E (3 exs., SEMC); Campamento Rio Aro, by Rio Aro, 7.62405°N, 64.1387°W, 90 m, 11.vii.2010, leg. Short, Arias, & Tellez, stream margins, VZ10-0711-02A (1 ex., SEMC); Gran Sabana, E. Pauji, Salto Catedral, 4.52197°N, 61.5261°W, 860 m, 15.vii.2010, leg. Short & Tellez, rock pools and seeps on open trail, VZ10-0715- 03A (16 exs., SEMC).

Remarks. This species was described from large series along the western margin of the Guiana Shield in Venezuela. Here, we confirm numerous records from the central and eastern portions of the shield in Suriname and Guyana. Despite the significant range extension, the habitat (granite rock seeps) and morphology are identical between eastern and western populations, and it seems likely this species is widespread (if localized) across the Shield.