“…Most studies are limited either in geographic or phylogenetic scope. In the amphipod literature, these include but are not limited to a species geographic range size (Trontelj et al., ), the extent of ecological niche overlap and species coexistence (Fišer, Altermatt, Zakšek, Knapič, & Fišer, ), the strength of size‐assortative pairing (Galipaud et al., ), the effectiveness of conservation measures (Venarsky, Anderson, & Wilhelm, ) and the use of biological indicators in ecosystem health assessment (Feckler, Schulz, & Bundschuh, ; Feckler, Thielsch, Schwenk, Schulz, & Bundschuh, ; Feckler et al., ; Major, Soucek, Giordano, Wetzel, & Soto‐Adames, ; Soucek, Dickinson, Major, & McEwen, ; Weston et al., ; Zettler et al., ). Notably, all these studies consider cryptic species as a source of error that must be accounted for when documenting and explaining biodiversity patterns.…”