Polyplocia

Gonçalves, Inês C. & Peters, Janice G., 2016, A new species of Polyplocia Lestage from Malaysia with comments on the genus (Ephemeroptera, Euthyplociidae, Euthyplociinae), Zootaxa 4184 (3), pp. 553-560 : 559

Key to male specimens of Polyplocia

1. Veins without dark clouds around cross veins and wing margins translucent; membrane of forewing colored only on C and Sc fields, purplish; abdominal sterna without markings............................................ Polyplocia vitalisi

- Veins with dark brown clouds around cross veins and margins of wings with brownish tinge; membrane of forewing without purplish color on C and Sc fields (Sc field may be a little darker); abdominal sterna with a pair of blackish marks on anterolateral margins......................................................................................... 2

2. Styliger plate rounded and projecting posteriorly; penes narrow, divided, V-shaped, fused only near base; penes apparently without dorsal spine...................................................................... P. campylociella

- Styliger plate short and straight, not projected; penes broad, T-shaped, fused except at apex; each lobe of penes with small dorsal spine laterally directed............................................................... P. nebulosa sp. nov.