Harpagobaetis gulosus Mol 1986

Taxonomy. This species described based on nymphs, can be distinguished from by the following combination of characters: 1) labrum laterally expanded, anteriorly W-shaped and with short spines on margin at middle, laterally with palmately branched setae; 3) mandibles with 4 cleft incisors, molars pointed and strongly protruding; 4) left prostheca narrowed and with 2–3 denticles apically, right prostheca reduced to a simple seta; 5) maxillae with 4 long canines, second canine half length of others, palpi three-segmented; 6) segment II of labial palpi without projection, segment III conical; 7) tarsal claws with 2 rows of denticles and a pair of subapical setae; 8) hind wing pads present; 9) dorsal surface of body with brownish spots.

Distribution. Brazil, Surinam and Venezuela.

Material examined. One nymph: Parupa river, 5º 40´N; 61º 32´W; 1281 m, 19/ 3/ 2006, EG, AMO, and MEG cols. Material housed at IML.