Oocyclus substillus Short & Perkins, 2004

(Figs. 2 C, 5C, 7, 8B)

Oocyclus substillus Short & Perkins, 2004: 19 .

Material examined (215 exs.): PANAMA: Canal Zone: Madden Dam, 29.vi.1976, leg. A. Newton, in wet debris on rocks (3 exs.: FMNH, KSEM); VENEZUELA: Táchira State: 23.4 km S. La Fria [ca. 8°0’N, 72°16’W], 1.vii.1984, leg. Eiland & Linares, “col. 28” (34 exs., USNM, KSEM, MIZA); Zulia State: Perijá National Park, Toromo, SW of Machiques, 10°03.058'N, 72°42.974'W, 435 m, “ 02/07/2003 ”, leg. M. García (22 exs., CIBC); same locality but 31.xii.2005, leg. A. Short & P. Torres, AS-06-001 (5 exs.); Perijá National Park, Toromo, SW of Machiques, 10°02.962'N, 72°42.615'W, 432 m, narrow ravine, 31.xii.2005, leg. A. Short & P. Torres, AS-06-002 (128 exs.); same locality but 23.ix.2007, leg. A. Short, AS-07-022 (4 exs.); same locality but 28.i.2009, leg. A. Short, M. García, J. Camacho, VZ09-0128-02A (18 exs.); Caño Colorado, La Alemania, 750 m, 11.xi.1995, leg. J. Camacho & M. García (1 ex., MALUZ).

Diagnosis. Larger species (Fig. 2 C). Posterolateral corners of pronotum strongly spinose. Procoxae spinose. Elytra with rows of larger systematic punctures, row 1 bearing a continuous row of erect setae. Elytral suture not raised in posterior third. Elytral margins slightly explanate, and without a fringe of long setae. Aedeagus as in Figure 5 C.

Among the larger Oocyclus species, O. substillus is most similar to O. meridensis and O. andinus as all share spinose posterolateral margins of the pronotum and have distinct setiferous rows of systematic punctures, with the first row bearing erect setae ( O. pittieri is also similar but does not have spinose pronotal corners, and does not geographically co-occur with O. substillus). The first row of erect setae is broken in O. andinus while continuous in O. substillus . The ground punctation is slightly coarser and the aedeagal parameres more straight in O. meridensis, while they are exceptionally fine and apically sinuate respectively in O. substillus .

Distribution. Panama, northwestern Venezuela (Zulia and Táchira States) (Fig. 7).

Remarks. This species was found at several seepage sites in the Serranía de Perijá (e.g. Fig. 8 B). It has been collected together with O. galbus (see remarks under that species for a more detailed habitat description).