Onisimus normani Sars 1891
- Dataset
- Onisimus turgidus (Sars, 1879) (Amphipoda, Uristidae), an overlooked amphipod from sea anemones in Northern Norway
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Amphipoda
- family
- Uristidae
- genus
- Onisimus
- species
- Onisimus normani
description
Figs 1 – 3
distribution
Distribution Although there are many records of O. normani in the amphipod literature, all except those from Southern Norway in reality are either O. turgidus or taxa very closely related to that species (Johnsen 2001). Johnsen mentions a record from Andsfjorden at 69 ° N (material in Tromsø Museum): otherwise this species has only been recorded from the Oslofjord and a number of localities in W Norway (Vader 1967). Onisimus normani appears to be an obligate associate of the sea anemone Bolocera tuediae, and it has only exceptionally been found in other sea anemones (Vader 1967, 1975), although it is well able to survive also in other sea anemone hosts in the laboratory (Vader & Lønning 1973).
materials_examined
Material examined NORWAY • 1 ♀ (10 mm); Korsfjorden; 680 m depth; 1968; Wim Vader leg.; from Bolocera tuediae; TSZCr 8659 (Figs 1 – 3) • 1 ♀ immature (8 mm); same collection data as for preceding; TSZCr 8659 • 1 spec.; Raunefjorden; 240 m depth; 1968; Wim Vader leg.; from Bolocera tuediae; TSZCr 8628 • 1 spec.; Korsfjorden; 680 m depth; 1968; Wim Vader leg.; from Bolocera tuediae; TSZCr 8623 • 1 spec.; same collection data as for preceding; TSZCr 8624 • 2 specs; same collection data as for preceding; TSZCr 9320 • 7 specs; Andfjorden; 69 ° 18 ′ 42 ″ N, 16 ° 23 ′ 24 ″ E; 498 m depth; 1 Jul. 1997; Wim Vader leg.; from Bolocera tuediae; TSZCr 12962