CLADOENDESIS OF EPHEMEROPTERA
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Figs 43–48. Larval exuviae of Procloeon (Oculogaster) niger. 43–44 – caudalii; 45 – abdomen; 46 – half of pronotum and mesonotum; 47 – male uromeres IX–X; 48 – fragment of abdominal tergum VIII (arrow shows long bifurcate seta near midlength) (43–46 – holotype).