Mayfly Species Paracloeodes fleeki

Source: Review of continental North and Central American Paracloeodes Day 1955 (Ephemeroptera: Baetidae), including description of a new species from Minnesota, U. S. A.

Diagnosis. Male imago. Unknown. Mature nymph. 1) frons with two parallel keels (Fig. 9); 2) labrum with a pair of subapical setae near the middle that are distinguishable from others dorsal setae; 3) one row of five simple setae near distolateral margin of labrum; 4) distal margin of labrum with bifid setae; 5) distolateral margin of labrum with bifid and pectinate setae; 6) right mandible incisors cleft; 7) outer incisor of right mandible without vestigial denticle; 8) maxillary palp 1.75 × the length of galea-lacinia; 9) apical half of paraglossa without an abrupt decrease in width (rounded condition) (similar to Figs 22 and 25); 10) angle between inner margin of labial palp segment III and distal margin of segment II around 90 °; 11) lobe of labial palp segment II relatively rounded (Fig. 17); 12) base of labial palp segment III 0.40 × the width of segment II (Fig. 17); 13) labial palp with length of segment III 0.90 × the width of its base (Fig. 17); 14) hind wing pads absent; 15) anterior surface of forefemur with one sparse row of blunt setae near dorsal margin (dashed line ellipse in Fig. 14); 16) medial row of setae on anterior surface of forefemur sparse (dashed line rectangle in Fig. 14); 17) anterior surface of forefemur with one sparse row of blunt setae near the ventral margin (bracket in Fig. 14); 18) fore tarsal claw 0.50 × the length of the tarsus, with minute denticles (Fig. 14); 19) abdominal color pattern as in Figure 1; 20) length of gills at least 2.0 × the length of the subsequent abdominal segment (Fig. 1).