Camelobaetidius leentvaari Demoulin 1966

(Figs. 4, 37–46)

Taxonomy. The specimens collected here are placed in C. leentvaari, presenting a single difference: tarsal claws with 28 denticles instead of 17–23. This species can be distinguished from the other species of the genus by the following combination of characters: 1) labrum, dorsally with a subapical row of setae (Fig. 37); 2) mandibles with setae between prosthecae and molae (Figs. 38–39); 3) lingua subequal to superlinguae (Fig. 40); 4) maxillary palpi shorter than galea-lacinia (Fig. 41); 5) segment II of labial palpi rounded (Figs. 42 a and b); 6) coxal gills small; 7) prosternum with single, medial protuberance; 8) femur I with a tubercle on ventral margin (Fig. 43); 9) apical margin of tibia with an excavation and a patch of short spines (Fig. 43); 10) tarsal claws with 17-28 denticles (Fig. 44); 11) posterior margin of terga with rounded projections (Fig. 45); 12) paraprocts as in Fig. 46; 14) terminal filament subequal in length to abdominal segment X.

Distribution. Brazil, Surinam and Venezuela.

Material examined. Two nymphs: Kamoirán river, 5º 37´N, 61º 21´W, 1313 m, 20/ 03/ 2006, EG, AMO, and MEG cols. Material housed at IML.