A key feature of Hyperia galba are the large green eyes, and swollen head and thorax, all of which are more pronounced in the females . Males have long, filiform antennae, while the female's are very short. The first two pairs of gnathopods are small and simple, unlike many other amphipods. Growing to around 1 cm in length, Hyperia galba, is a very widespread species.
Recorded distribution in Britain and Ireland
Recorded from most coasts around the UK but only from southwest Ireland.
This quite common pelagic amphipod is parasitic on many jellyfish and comb-jellies including the dustbin-lid Rhizostoma octopus, moon Aurelia aurita, Lion's mane Cyanea capillata and compass jellyfish Chrysaora hysoscella as well as the sea gooseberry Beroe spp. Hyperia galba may be found externally or internally where it has burrowed into the host.
Large green eyes.
Male antennae long and filiform, female antennae are very short.
Head and thorax swollen compared to abdomen, particularly in females.
Gnathopods simple with acute, projecting, distal lobe on carpus.
Hosie, A.M. 2009. Hyperia galba An amphipod. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. Available from: http://www.marlin.ac.uk/species/detail/2208
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