103 

 Day: Ephemeroptera 



Fig. 3:27. a, Edmundsius agilis, male genitalia; b, Rhithrogena decora, male genitalia; c, 

 Baetis alius, male genitalia; d, Baetis sulfurosus, male genitalia; e, Baetis leechi, male gen- 

 italia; f, Baetis diablus, male genitalia; g, Paraleptophlebia cachea, male genitalia; h, Epheme- 

 rella levis, male penes in lateral aspect; i, Baetis sulfurosus, male hind wing; /, Baetis leecbi, 

 male hind wing; k, Baetis diablus, hind wing, /, Baetis alius, male hind wing; m, Edmundsius 

 agilis, nymphal hind leg; n, Ephemerella soque/e, nymphal tergites; o, Ephemerella levis, nymphal 

 tergites; p, Rhithrogena decora; nymphal gill five; q, Edmundsius agilis, nymphal gill one (0,01^, 

 Day, 1953; b-l, n-p, Day, 1954). 



