Cloeodes incus (Waltz & McCafferty) n. comb.

(Figs. 31–42)

Bernerius incus Waltz & McCafferty, 1987a: 181 . Baetis (?) sp. B. Berner, 1980: 190.

Diagnosis. Cloeodes incus n. comb., known from nymphs, can be distinguished from the other species of the genus by the following combination of characters: 1) labrum (Fig. 31) with one subapical seta centrally and two setae near lateral margin, anterior margin with basally bifid setae near midline and apically bifid setae near lateral margin; 2) mandibles without setae between prostheca and mola; 3) left mandible with thumb of molar area in the same plane as anterior margin (Fig. 32); 4) right mandible with incisors cleft in two sets (Fig. 33); 5) lingua with a rounded projection (Fig. 34); 6) maxillary palpi long, 1.5 times the length of galealacinia, two segmented, segment II with a constriction (Fig. 35); 7) labium with segment III of palpi rounded (Fig. 36); 8) hind wing pads present; 9) dorsal edge of femora (Fig. 37) with a row of pointed spines and apically rounded (as in Fig. 63), femora, tibiae and tarsi with bipectinate spines; 10) tarsal claws with minute denticles basally (Fig. 38); 11) posterior margins of abdominal terga with spines (Fig. 39), sterna with long fine setae randomly distributed throughout; 12) gills pointed apically (Fig. 40); 13) posterior margin of paraprocts with spines apically (Fig. 41); 14) caudal filaments with simple setae, and with whorl of spines on each segment (Fig. 42).

Material examined. Paratypes: 2 nymphs: BOLIVIA, trib. Río Umalo o Grande, below Calamarca on La Paz, Oruro Rd, 18/ VII/ 1977, S. S. Roback & L. Berner colls. Material housed in FAMU.