Thorina Stephensen, 1944

Thorina Stephensen, 1944

General Description

Caprellid, “Ghost” or “Skeleton” shrimps, so called for their skeletal appearance. Amphipod crustaceans, easily distinguished by the elongate stick-like body form and reduction of the abdominal appendages. Head is generally fused with pereonite 1. Pereopods on first 2 segments (pereonites) are most flexible and called gnathopods; gnathopods 2 being the largest, used in defense, feeding and substrate attachment. In many species pereopods 3 and 4 may also be reduced or absent. Gills on pereonites 3 + 4, rarely on pereonite 2. Pereopods 5 - 7 much smaller than 1 + 2, used for clinging to the substratum. In females, brood plates (öostegites) develop on pereonites 3 + 4. Much remains to be learnt about their biology, ecology and in many cases changing distributions.

Author Ashton, Gail
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Rights holder Ashton, Gail

Diagnostic Description

Gills on pereonites 3 + 4. Antenna 1, no accessory
flagellum; antenna 2 as long as peduncle of antenna 1,  flagellum 2-articulate. Pereiopod 2, ischium and merus with spine-like process distally; gnathopod strong, narrows to projection distally, palm with projection bearing proximal grasping spine and 2 projections.  

Author Ashton, Gail
cc-by-nc
Rights holder Ashton, Gail

What do caprellids (Crustacea: Amphipoda) feed on?

Taxa

Guerra-García, J. M., & Tierno de Figueroa J. M. (2009).  What do caprellids (Crustacea: Amphipoda) feed on?. Marine Biology. 1881-1890.
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