black sea red data book - Department of Biology

Synonyms: None.
Hemimysis serrata (Bacescu, 1938)
Common names: Russ: Myzida zubchataya; Ukr: Myzida zubchasta.
Order MYSIDACEA
Family MYSIDAE
Taxonomic description. One of the four species of the genus, three of which are
encountered in the Azov-Black Sea basin. A close relative of Hemimysis anomala,
but the scale of antenna II is longer than the stalk of antenna I and has 8-12 spicules
on its external edge.
IUCN Status
World level: EN
Black Sea Regional level: EN
Subregion level: EN (Ukrainian sector)
Distribution. Endemic of the Azov-Black Sea basin. Inhabits the coastal areas of the
Sea of Azov, and the Romanian coastal area of the Black Sea.
Habitat type, Critical habitats, Limiting factors. A Photophobie species,
inhabiting crevices in rocks and cliffs. The species is euryhaline and eurythermic,
very resistant to changes in salinity and to a lesser extent to different temperature
regimes.
Biology. Euryphagous, although prefering animal food (polychaetes, crustaceans).
Reproduces in the warm part of the year. After fertilization females carry from 7-47
(average 33) embryos in the brood pouch. One summer generation. Life span about
14 months. Length of adult female 9-11 mm, male 7-8 mm. Bright red in colour.
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