Stenorhynchus seticornis

Yellowline arrow crab

Stenorhynchus seticornis, Abrolhos Islands, Brazil, Photo: Graham Edgar

Stenorhynchus seticornis, Bocas del Toro, Panama, Photo: Rick Stuart-Smith

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Same Genus

Stenorhynchus debilis

Stenorhynchus lanceolatus

Distribution

Tropical Atlantic/Caribbean

Description

Triangular abdomen with an extremely elongated, serrated rostrum, a triangular pattern on back, and long spindly legs and claws. Colouring can be variable, the body can be yellow, or green or tan, with the triangular pattern on back composed of white, brown, black or iridescent blue lines on back, legs reddish or yellow, and the claws blue or violet. Yellow spots can be seen on joints of claw limbs. Can sometimes be seen living commensally with the sea anemone Lebrunia danae.

Information

Max Size: 30 cm

Sea Temperature Range: 24.6-30.1°C

Depth: 0-10m

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Frequent (17.1% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Few (3 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: Joe Shields