CLADOENDESIS OF EPHEMEROPTERA
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Kluge & Gattolliat & Salles 2017: Figs 1-4 5-9 10-15 16-19 20-22 23-30 31-36 37-39 40-44 45-50 51-55 56-59 60-65 66-75 76-83 84-95 96-103 104-107 108-113 114-118 119-124 125-132 133-134

Figs 20–22. Crassabwa flava, exuviae of larval abdomen. 20 – submedian part of tergum III; 21 – its part, enlarged; 22 – anterior-lateral part of sternum III with lateral rugose convexity and bifurcate setae laterad and posteriad of it (scale as on Fig. 20).