Mayfly Species Paracloeodes minutus

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

Mature nymph. 1) labrum with a pair of subapical setae near middle distinguishable from others dorsal setae; 2) labrum with one row of five simple setae near distolateral margin; 3) distal margin of labrum with bifid setae; 4) distolateral margin of labrum with bifid and strong pectinate setae; 5) right mandible incisors cleft; 6) outer incisor of right mandible without vestigial denticle; 7) maxillary palp 1.60 × the length of galea-lacinia; 8) apical half of paraglossa without an abrupt decrease in width (Figs. 22 and 25); 9) angle between inner margin of labial palp segment III and distal margin of segment II around 90 °; 10) lobe of labial palp segment II rounded (Fig. 19); 11) base of labial palp segment III 0.43 – 0.46 × the width of labial palp segment II (Fig. 19); 12) labial palp with length of segment III 0.80 – 0.85 × the width of its base (Fig. 19); 13) hind wing pads absent; 14) anterior surface of forefemur with one row of blunt setae near dorsal margin (Fig. 16); 15) medial row of setae on anterior surface of forefemur dense (Fig. 16); 16) anterior surface of forefemur with dense row of blunt setae near ventral margin (Fig. 16); 17) tarsal claw 0.5 × the length of tarsus, with minute denticles (Fig. 16); 18) abdominal color pattern as in Figure 4; 19) length of gills 2.0 × the subsequent abdominal segment or longer (Fig. 4).