FIGURES 35–50 in Review of selected species of Campsurus Eaton 1868 (Ephemeroptera: Polymitarcyidae), with description of eleven new species and a key to male imagos of the genus

FIGURES 35–50. Campsurus essequibo, imago. Holotype male genitalia: 35, general v.v.; 36, detail of penes, v.v. Female adult: 37, abdominal sternum VIII; 38, detail of sockets. Male imago: 39–42, genitalia, variations, v.v.; 43, genitalia after treatment with KOH; 44–47, genitalia, variations, l.v.; 48, male mesofurcasternum. SEM photographs: 49, genitalia, v.v. (with detail of microlepides); 50, detail of penes, v.v.