Crymostygius Explained

Crymostygius thingvallensis is a species of subterranean amphipod crustacean, endemic to the area around Þingvallavatn, a lake in southwestern Iceland.^[1] The species has no close relatives, and is placed in its own family, Crymostygidae.^[1] This distinctness has been confirmed by molecular phylogenetics.^[2]

Notes and References

1. B. K. Kristjánsson . J. Svavarsson . 2004 . Crymostygidae, a new family of subterranean freshwater gammaridean amphipods (Crustacea) recorded from subarctic Europe . . 38 . 15 . 1881–1894 . 10.1080/00222930310001597295.
2. Etienne Kornobis . Snæbjörn Pálsson . Dmitry A. Sidorov . John R. Holsinger . Bjarni K. Kristjánsson . 2011 . Molecular taxonomy and phylogenetic affinities of two groundwater amphipods, Crangonyx islandicus and Crymostygius thingvallensis, endemic to Iceland . . 58 . 3 . 527–539 . 10.1016/j.ympev.2010.12.010 . 21195201.