PORT PHILLIP BAY


South Australian Sand Shrimp 

Philocheras intermedius (Bate, 1863)

View scientific description and taxonomy

Scientific Details

Rostrum simple, basally depressed. Carapace about half length of abdomen, middorsal ridge with 1 anterior tooth, sometimes smaller second. Submedian spine absent. Dorsolateral ridge with 4 spines. Hepatic spine present. Lateral ridge with 1-3 spines. Gills (pleurobranchs) ventrally directed posteriorly. Pereopod 1 subchelate, without exopod. Pereopod 2 chelate, much shorter than other pereopods. Third and fourth abdominal somites rounded dorsally.

Source: Poore, G.C.B. (2004) Marine decapod Crustacea of southern Australia. A guide to identification (with chapter on Stomatopoda by Shane Ahyong). CSIRO Publishing, Melbourne, 574 pp.

Taxonomy

Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Subclass:
Eumalacostraca
Superorder:
Eucarida
Order:
Decapoda
Suborder:
Pleocyemata
Infraorder:
Caridea
Family:
Crangonidae
Genus:
Philocheras
Species:
intermedius

General Description

Carapace with 2 mid-dorsal teeth including epigastric tooth and a longitudinal row of small teeth posterior to orbit. First leg subchelate (flat short claws ending in a finger fitting across an oblique palm); second legs much shorter than other legs. Third and fourth abdominal segments rounded dorsally. Mottled pale grey on top, like the sediments in which it lives, with white eyes, brilliant red posterior segments, three velvety black marks on the fifth abdominal somite, and sides and limbs purple, reddish or yellow. Up to 4.5 cm long.

Biology

Sand shrimps differ from all other caridean shrimps in having flat short chelipeds ending in a finger fitting across an oblique palm (rather than having two extended opposing fingers). This species was first reported in 1927 from Spencer Gulf, South Australia by Herbert Hale who described the colour as "exquisite", mottled pale grey on top, like the sediments in which it lives, with white eyes, brilliant red posterior somites, three velvety black marks on the fifth abdominal somite, and sides and limbs purple, reddish or yellow.

Habitat

Intertidal, to 10 m depth.

Soft substrates

Coastal shores

Distribution guide

Southern temperate oceans, including south-eastern Australia.

Species Group

Prawns, shrimps, lobsters Shrimps

Depth

Shore (0-1 m)
Shallow (1-30 m)

Water Column

On or near sea floor

Max Size

4.5 cm

Diet

Organic matter

Commercial Species

No

Global Dispersal

Native to Australia

Conservation Status

  • DSE Advisory List : Not listed
  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed

Author

article author Taylor, J.

Dr. Jo Taylor is the Sciences Collections Online Coordinator at Museum Victoria.

Author

article author Poore, G.C.B.

Dr. Gary Poore is Principal Curator Emeritus at Museum Victoria.

citation

Cite this page as:
Taylor, J. & Poore, G.C.B., 2011, South Australian Sand Shrimp, Philocheras intermedius, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 18 Oct 2017, http://portphillipmarinelife.net.au:8098/species/5511

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