CLADOENDESIS OF EPHEMEROPTERA
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Fig. 688–693. Hubbardula heterolepida. 688–692 – genitalia of male imago (688 – lateral view; 689–692 – ventral view): 689 – uromere IX with styliger and gonostyli; 690 – penis with gonades; 691 – styliger and bases of gonostyli; 692 – general view; 693 – subimaginal exuviae. Abbreviations: gs1, gs2+3, gs4 – 1st–4th segments of gonostylus; sg – styliger.