Trichocarcinus

Trichocarcinus is a genus of crabs belonging to the family Xanthidae. These crabs are characterized by their hairy or setose carapace, which gives them their name, derived from the Greek words "tricho" meaning hair and "karkinos" meaning crab. They are typically found in marine environments, inhabiting coastal waters, rocky shores, and coral reefs in tropical and subtropical regions.

The carapace of Trichocarcinus species is generally broad and flattened, often ornamented with spines or tubercles in addition to the characteristic hairs. The cheliped (claw-bearing legs) can vary in size and shape depending on the species and sex, but are usually robust. Their diet consists of various small invertebrates, algae, and detritus, playing a role in the benthic ecosystem.

Reproduction in Trichocarcinus follows the typical pattern for brachyuran crabs, with females carrying fertilized eggs attached to their pleopods. Larval development occurs in the plankton before settling to the seabed. Due to their relatively small size and cryptic coloration, some species may be difficult to locate and study. Information on their specific ecological roles and distribution is continuously being updated through ongoing marine research.