trichobasis species group

Diagnosis

1) antennal scape and pedicel with long and robust setae (Fig. 1A); 2) trochanter with long and robust setae (Fig. 2A, C); 3) distal margin of labrum with two rows of setae, one robust (ventral surface) and one thin and bifid (dorsal surface) (Fig. 1B); 4) maxillary palp segment II with distal lobe (Figs 1E, 8D–H); 5) dorsal surface of glossa with inner arc close to inner margin, outer arc close to outer margin (Figs 4H, 8K); 6) hindwing pads absent; 7) combination of rows of setae on fore femora: dorsal and ventral margins with long pointed setae, anterior surface with one median row of blunt setae (Figs 2A, 9A, 13A); 8) anterior surface of hind femora with one transversal row of setae at base, with setae sockets not touching each other (Figs 2C, 9C, 13C); 9) abdominal sterna surface with robust, apically pointed setae (Fig. 3B).

Composition

Rivudiva trichobasis, R. amazona sp. nov., R. oxum sp. nov., R. uiara sp. nov., R. naia sp. nov., and R. sp. X.