Leucosiidae
Samouelle, 1819
Purse Crabs
Genus Guides
2- Persephona(mottled purse crab (for P. mediterranea))
- Randallia
Leucosiidae is a of marine crabs commonly known as purse crabs. The family contains three and several of uncertain placement. Members are characterized by their rounded, often smooth that resemble small purses or pebbles. The family was established by George Samouelle in 1819.
Pronunciation
How to pronounce Leucosiidae: //luːˈkəʊ.si.aɪˌdiː//
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Identification
Leucosiidae crabs are distinguished by their rounded, convex that are often smooth and pebble-like in appearance. The carapace is typically wider than long, with the front margin often reduced or concealed. The chelipeds are usually short and stout. Unlike many other crab , the legs are often relatively short and may be partly concealed beneath the carapace. The overall compact, rounded body form distinguishes them from more flattened or elongated crab families such as Portunidae or Cancridae.
Images
Habitat
Marine environments, primarily on soft substrates including sand and mud. Some inhabit deeper waters, while others occur in shallow coastal areas.
Distribution
Widespread in marine waters globally. Distribution records include the North Atlantic (Denmark, Norway, Sweden) and tropical to temperate regions worldwide.
Similar Taxa
- CalappidaeBoth have rounded, compact and reduced front margins. Calappidae (box crabs) differ in having more pronounced lateral spines and often more elaborate ornamentation on the carapace surface.
- CancridaeBoth are marine crab , but Cancridae (rock crabs) have broader, more oval to hexagonal with distinct anterolateral teeth and longer, more visible legs.