Stylochus
Family: Stylochidae
Stylochus image
Stylochus  

Species Description: Stylochus sp. are generally oval in shape, with greatly flattened bodies. Color is tan to darker brown. They are common inhabitants of oyster reefs and reach 2.5 - 3.2 cm (approximately 1 inch) in length.

Other Taxonomic Groupings: Suborder: Acotylea.

Regional Occurrence: Extent of range is undetermined.

IRL Distribution: Stylochus sp. is found throughout the Indian River Lagoon, and is most abundant in areas where oysters occur.

Age, Size, Lifespan: Typical and maximum adult sizes of Stylochus sp. are 25 x 12mm and 32 x 15 mm respectively.

Abundance: Adult Stylochus sp. are considered common in empty oyster shells from Lake Worth to West Palm Beach.

Reproduction: Stylochus sp. is a simultaneous hermaphrodite.

Embryology: Egg masses of Stylochus sp. are laid inside empty oyster shell and hatch as Götte's larvae.

Trophic Mode: Stylochus sp. preys on oysters, barnacles and planktonic larvae.

Habitat: Preferred substratum for Stylochus sp. is oyster reef.

Special Status: Economic Impact

Notes on Endemism: The invasion status of Stylochus sp. is unknown but its larvae have been found in bilge water.

Economic Importance: Stylochus sp. can be considered to have an adverse economic impact in the Indian River Lagoon because it preys on oysters.

Species within Oyster Reef Invertebrates  
Image of Stylochus
Map not
Available