CLADOENDESIS OF EPHEMEROPTERA
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Figure 3. Larva of Siphlonurus/fg4 aestivalis [Siphlurus].

A – Anterior half of male larva of last instar, lateral view (tergalius III removed; subimaginal hind leg shown by interrupted line); B – left maxilla, ventral view (muscles shown by interrupted lines); C – hypopharynx and superlinguae, dorsal view; D – labium, ventral view (muscles shown by interrupted lines); E – apex of left maxilla, median view (dentisetae shown by dots); F – left mandible; G – right mandible. (A, B, E–G – from Kluge 1997 and 2000).

Abbreviations: c.mx – maxillary canines; cly – clypeus; crd – cardo; ds – dentisetae; fe – femur; fr – frons; gl – glossa; hyp – hypopharynx, i – incisor; kd – kinetodontium; lbr – labrum; m – mola; mx – maxilla; pgl – paraglossa; p.lb – labial palp; p.mx – maxillary palp; prs – prostheca; pt – patella, sl – superlingua; stp – stipes; ta – tarsus; ti – telotibia.