CLADOENDESIS OF EPHEMEROPTERA
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Figs 103–108. Females of Procloeon (Oculogaster) regularum. 103–104 – imagines; 105–108 – subimaginal exuviae: 105–106 – middle and fore tarsi (arrows show spines; 1st–5th – initial tarsomeres); 107 – half of mesonotum; 108 – mesothoracic pleuron.