FIGURES 41–42 in The concept of Compsoneuria Eaton, 1881 revisited in light of historical and new material from the Sunda Islands (Ephemeroptera: Heptageniidae: Ecdyonurinae)

FIGURES 41–42. SEM pictures of eggs extracted from a female imago (Fig. 41) and from a mature nymph (Fig. 42) of Compsoneuriella thienemanni. Fig. 41: Female imago from Sumatra, Wai Lima, Lampongs, XI–XII. 1921, Karny leg; Fig. 42: Female nymph (UN11) from Sumatra, Harau Canyon, 27.IX.2009, Balke leg; a: egg in toto; b: detail of the pole; c: micropyle and detail of the chorionic structure.