CLADOENDESIS OF EPHEMEROPTERA
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Figs 106–111. Thraulodes telegraphicus. 106 – protogonostyli of last instar larva (hypoderm of gonostyli and styliger and hidden cuticle of protopenis shown by interrupted lines); 107 – enlarged cuticle of protopenis and hypoderm of developing penis inside; 108–109 – the same, at later stage of development; 110–111 – genital of male imago (110 – styliger ventrally; 111 – penis dorsally at left and ventrally at right). Abbreviation: bl – basal lobe; dp – dorsal projection of styliger; gd – gonoduct; m.gs – gonostylar muscle; m.med – median penial muscle; m.s – styligeral muscle; m-v.r – medio-ventral ridge (recurved flap); sp – seminal pump; tp – spear-like roll (telopenis).