Lybia

Lybia
Temporal range: Early Middle Miocene-Present,
Hawaiian pompom crab, Lybia edmondsoni
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Xanthidae
Subfamily: Polydectinae
Genus: Lybia
H. Milne-Edwards, 1834 
Type species
Grapse tessellata
Latreille in Milbert, 1812 

Lybia is a genus comprising eight species of small marine crabs from the family Xanthidae. Commonly known as boxer crabs and pom-pom crabs, these crabs are famous for their symbiosis with small aquatic invertebrates, particularly sea anemones, which they hold in their specialized claws for defense, and in some cases, feeding. The genus has a diverse distribution, ranging across the Indo-Pacific and existing as early as the Middle Miocene