CLADOENDESIS OF EPHEMEROPTERA
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Fig. 451–463. Centroptella (Chopralla) ceylonensis. 451 – male imago; 452 – subimaginal exuviae of mesopleuron; 453 – subimaginal exuviae of mesonotum; 454–455 – fore and middle legs of male imago; 456–457 – abdomina of male imagines extracted from larvae; 458–463 – abdomina of male imagines (451–459 – specimens from Sri Lanka; 460–463 – specimens from India).