Tricorythodes sp.

Material. Venezuela, Estado Bolívar: 1 3 and 6 Ƥ imagos from Mareman-Parú, N 5° 44' 49" – W 61° 24' 6", 1308 m, 26/VI/2007, EG, AMO, CA and MEG cols. (MLBV); 7 3 imagos same data except date 28/VI/2007 (MLBV); 7 Ƥ imagos from Kaku-Parú, N 4° 54' 0" – W 61° 5' 25", 913 m, 29/VI/2007, EG, AMO, CA and MEG cols. (IML); 20 3 imagos same data except date 28/VI/2007 (IML); 6 3 imagos from Tarotá, N 5° 49' 15" – W 61° 25' 4", 1324 m, 27/VI/2007, EG, AMO, CA and MEG cols. (MLBV).

Discussion. As the nymphal characters are necessary to correctly diagnose and describe species in this genus, we prefer not to erect a new species for this material until the immature stages could be known.

Ecology. Imagos were collected along the river margins (Fig. 25), at night, and during the rainy season (June 2007). Rivers were uncovered or partially shaded (Kaku-Parú), with acidic waters (pH=5). They were small to medium size streams (17–30 m wide; 2nd–3rd order), with bottoms mainly composed of bed-rock and gravels (Kaku-Parú).