CLADOENDESIS OF EPHEMEROPTERA
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Fig. 380–386. Centroptella (Crassolus) ludmilae sp. n. 380–382 – genitalia of male imago (left gonostylar and gonovectal muscles not shown); 383–384 – successive stages of developing of subimaginal gonostyli under larval cuticle; 385–386 – subimaginal exuviae of genitalia. Abbreviations: gd – gonoduct; gs1–gs3 – segments of gonostyli; gv – gonovectis; m.IX-X – base of intersegmental muscle; m.gs – gonostylar muscle; m.gv.d – dorsal muscle of gonovectis; m.gv.v – ventral muscle of gonovectis; pb – median projection of penial bridge; pgs – larval protogonostylus; usg – unistyliger.