CLADOENDESIS OF EPHEMEROPTERA
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Fig. 598–606. Centroptella (Chopralla) papuanica sp. n., larval exuviae (holotype). 598 – abdomen; 599 – pronotum and mesonotum; 600 – area of pronotum close to median suture with bifurcate seta corresponding to a on Fig.14; 601 – scale on metanotum with same magnification; 602 – abdominal sternum VI and enlarged scales; 603 – abdominal sternum IX and enlarged scales; 604 – labrum; 605 – labium; 606 – abdominal terga VIII–IX and enlarged scales.