CLADOENDESIS OF EPHEMEROPTERA
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Figs 48–52. Male imaginal genitals of Monocentroptilum badium. 48–49 – specimen with protracted gonovectes: 48 – with focus on internal parts, including gonovectes; 49 – with focus on ventral surface, including unistyligers and median styligeral sclerite; 50–51 – specimen with retracted gonovectes: 50 – with focus on gonovectes and penial bridge; 51 – with focus on median styligeral sclerite and median sterno-styligeral muscle; 52 – gonostyli.