CLADOENDESIS OF EPHEMEROPTERA
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Figs 53–59. Indobaetis microfolius sp.n. 53 – margins of larval abdominal segments IV–VI with tergalii; 54 – genitals of male subimago (sterno-styligeral muscle and styliger-gonostylar muscles shown by interrupted lines); 55 – larval head; 56 – wing venation; 57 – head of male subimago; 58 – larval claw, posterior view; 59 – exuviae of right half of larval pronotum and mesonotum ( 53, 54, 56–58, holotype). 

Abbreviations: gs1–gs3 – 1st–3rd segments of gonostylus; m.s – median sterno-styligeral muscle; us – unistyliger.