CLADOENDESIS OF EPHEMEROPTERA
Figure 62. Rhithrogena/fg2, larvae.
AB Cinygmula/g1: A right maxilla, ventral view (muscles shown by interrupted lines); B cross section through abdominal segment VIII and tergalii VII. CO Rhithrogena/fg3: C cross section through abdominal segment VIII and tergalii VII; D apical (2nd+3rd) segment of maxillary palp and enlarged pectinate scraping seta; E superlinguae, hypopharynx and labium, apical view; F seta of distal row on dorsal surface of distal segment of labial palp; G distal part of labium, dorsal view (in left half) and ventral view (in right half) (compare with Fig.57:FH); HI scheme of natural position of tergalii (muscles shown by interrupted lines): H dorsal view; I posterior view (compare with Figs 57:CE and 61:JK); JL Rhithrogena/fg3-Sibirigena/g1* sibirica [Rhithrogena]: J abdominal segments I and II with left tergalii, ventral view; KL right tergalii VI and VII, dorsal view; MO Rhithrogena/fg3-Epeiron/g1 znojkoi [Ecdyonurus]: right tergalii VVII, dorsal view (fibrillose portions turned apart). (DG from Kluge 1988a; HI from Kluge 1993a; JK from Kluge 1997d).