Lucifer (prawn)

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Lucifer
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Suborder: Dendrobranchiata
Superfamily: Sergestoidea
Family: Luciferidae
De Haan, 1849
Genus: Lucifer
Thompson, 1829
Species

Lucifer chacei
Lucifer faxoni
Lucifer hanseni
Lucifer intermedius
Lucifer orientalis
Lucifer penicillifer
Lucifer reynandii
Lucifer typus

Lucifer is a little-known and degenerate genus of prawns, the only genus in the family Luciferidae. Lucifer has a long body, but many fewer appendages than other prawns, with only three pairs of pereiopods remaining, all without claws. It also bears no gills. The females, uniquely among prawns, carry the fertilised eggs on her pleopods until they are ready to hatch. This parallels the development of a similar system in pleocyemates, although the attachment is less strong in Lucifer. The length of the eye-stalks and the form of the petasma are used in distinguishing the eight species from each other.