The Family Baetidae (Insecta: Ephemeroptera) from Venezuelan Guayana’s Uplands Author Nieto, Carolina Author Grillet, Maria-Eugenia Author Domínguez, Eduardo Author Molineri, Carlos Author Guerrero, Edmundo text Zootaxa 2011 2808 1 17 journal article 10.5281/zenodo.277093 aca35c15-3819-4824-9995-a4af1b0d91ac 1175-5326 277093 Baetodes proiectus Mayo 1973 ( Figs. 2 , 8–16 ) Taxonomy. This species, described based on nymphs from Bolivia , can be distinguished from the other species of the genus by the following combination of characters: 1) two finger-like gills on each coxa ( Fig. 14 ); 2) abdominal terga with tubercles posteromedially ( Fig. 2 ); 3) labrum with dorsal surface with a subapical row of 7–9 spine-like setae near midline, alternating one long and one short ( Fig. 8 a), anterior margin with bipectinate setae ( Fig. 8 b); 4) hypopharynx with lingua subequal to superlinguae ( Fig. 11 ); 5) maxillae with palpi subequal to galea-lacinia ( Fig. 12 ); 6) labium with glossae shorter than paraglossae ( Fig. 13 ); 7) dorsal edge of femora with 7–8 setae ( Fig. 14 ); 8) tarsal claws with 8–9 denticles ( Fig. 15 ); 9) paraprocts as in Fig. 16 . Variation. The original description mention pronotum and metanotum with tubercles. Some nymphs examined have tubercles clearly defined, while others not. Distribution. Bolivia and Venezuela . Material examined. 35 nymphs: Tarotá river, 5º 49´15´N, 61º 25´W , 1324 m , 27/ 6/ 2007 , EG, AMO, CA and MEG cols.; 5 nymphs same locality except EG, AMO, and MEG cols., 18/3/2006 . Four nymphs: river close to Paují locality, 4º 29´N , 61º 34´W , 917 m , 17/ 3/ 2006 , EG, AMO, and MEG cols. Six nymphs: Kaimorán river, 5º 37´N ; 61º 21´W , 1313 m , 29/ 6/ 2007 , EG, AMO, CA and MEG cols. One nymph: Aponwao river, 5º 51´N ; 61º 27´W , 1340 m , 18/ 3/ 2006 , EG, AMO, and MEG cols. One nymph: Kako-Parú stream, 4º 54´N , 61º 05´W , 913 m , 21/ 3/ 2006 , EG, AMO, and MEG cols. One nymph: stream close to Paují locality, 4º 36´N , 61º 05´W ; 942 m , 17/ 3/ 2006 , EG, AMO, and MEG cols. One nymph: Maremán-Parú river, 5º 44´N , 61º 24´W ; 1308 m , 28/ 6/ 2007 , EG, AMO, CA and MEG cols. Material housed at IML except 10 nymphs housed at MLBV .