Taxonomic, ecological and morphological diversity of Ponto-Caspian gammaroidean amphipods: a review Author Copilaș-Ciocianu, Denis Author Sidorov, Dmitry text Organisms Diversity & Evolution 2022 New York, N. Y. 2022-01-07 22 2 285 315 http://dx.doi.org/10.1007/s13127-021-00536-6 journal article 10.1007/s13127-021-00536-6 1618-1077 13366423 Key to species of Yogmelina 1. Uropod 3 reduced, 1st article of exopod as long as peduncle ......................................................... Y. brachyura - Uropod 3 not reduced, 1st article of exopod longer than peduncle ........................................................................... 2 2. Basis of pereopod 7 truncated, abruptly tapering towards the distal edge ......................................... Y. ovata * - Basis of pereopod 7 not truncated, gradually tapering towards the distal edge ..................................................... 3 3. Lateral head lobes rounded, coxal plate 1 slightly bent forwards, fringed with short setae ................. Y. laeviuscula - Lateral head lobes acute, coxal plate 1 strongly bent forwards fringed with long setae.........................................4 4. Urosomites without setae, epimeral plates 2–3 with short distal setae .................................................. Y. pusilla - Urosomites with setae, epimeral plates 2–3 with long distal setae .......................................................... Y. limana .