CLADOENDESIS OF EPHEMEROPTERA
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Fig. 421–427. Kimminsula taprobanes. 421–422 – penis of male imago with focus on ventral and dorsal sides (gonoducts shown by dotted lines; arrow ); 423 – posterior margin of abdominal sternum IX of female subimago; 424 – the same of female larva; 425 – protogonostyli and protopenis of last instar male larva (dorsal view) with developing subimaginal genitalia inside (shown by interrupted lines); 426 – protopenis in ventral view; 427 – penis of holotype of taprobanes [Baetis] (from Kimmins 1960). Arrows show points of «breaking» on lateral margins.