Thysanoessa inermis

Thysanoessa inermis (Kryer, 1846)

Languages: English

Description

Diagnostic Description

Differs from other Thysanoessa species by the presence of a dorsal spine on the last segment of the abdomen.

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Morphology

The last segment of the abdomen carries a dorsal spine. The front edge of the carapace is transformed into an elongate rostrum. Uropods are shorter than the telson.

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Size

Length up to 30 mm.

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Ecology and Distribution

Distribution

Amphiboreal species; found in the Barents Sea, White Sea, Kara Sea, Bering Sea, Sea of Okhotsk.

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Relevance

Uses

Important food source for herring.

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