CLADOENDESIS OF EPHEMEROPTERA
Figure 9. Movements of larvae.
A–B – Siphlonurus/fg1 (larva with primary siphlonuroid swimming specialization): A – lateral view of swimming larva; B – dorsal view of its caudalii. C–E – swimming larvae of various Radulapalpata (rheophilous taxon, in which swimming siphlonuroid specialization is partly or completely lost): C – Rhithrogena/fg3 (leg pose differs from siphlonuroid); D – Heptagenia/f6=g5 (legs free); E – Ecdyonurus/fg1 (swims by legs rather than by abdomen). F–H – rheophilous representatives of Turbanoculata: F–G – Baetiella/g1 tuberculatum Kazlauskas 1963 [Pseudocloeon (Baetiella)]; H – Acentrella/g1 gnom Kluge 1983 [Pseudocloeon]. I–N – Respiratory movements: I–M – respiratory movements of Ameletus/fg1 representing modified primary siphlonuroid swimming movements; N – special respiratory movements of Baetis/fg* different from its swimming movements. (F–N – from Kluge & Nivikova & Brodsky 1984).