black sea red data book - Department of Biology

Synonyms: None
Hemimysis anomala G.O. Sars, 1907
Common names: Russ: Myzida anomaVnaya; Ukr: Myzida anomaVna
Order MYSIDACEA
Family MYSIDAE
Taxonomic description. One of seven species of its genus and close to Hemimysis
serrata. All ventral appendages in females are reduced, in males only the first and
second pairs of pleopods reduced. Telson with shortened apex and serrated along the
whole length of the edges.
IUCN Status
World level: Endemic of the Azov-Black Sea basin
Black Sea Regional level: EN
Subregion level: EN (Ukrainian sector)
Distribution. One of the few Ponto-Caspian endemics living both in the sea and in
freshwater bodies. Inhabits the Azov and Black seas, as well as the lower reaches of
the Dniepr, Dniestr and Don. Encountered on the west coast of the Caspian Sea.
Acclimatized in water reservoirs: Dnieprovsk, Sympheropolsk, Chernorechens
(Ukraine); Dubossarsk (Moldova) and Kaunas (Lithuania).
Habitat type, Critical habitats, Limiting factors. Near-bottom lithophilic
organism. Inhabits shells, rocky, rarely silty sediments; prefers firm sediments, more
often rocky, rarely shells and sandy. Also encountered in river estuaries, in silty
sinks. Benthic during the day, rising to the pelagic zone in the evening.
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