Cheiragonidae (lat.) Is a small family of crabs allocated to the monotypic superfamily Cheiragonoidea [1] [2] . Three modern species are counted in two genera: Erimacrus isenbeckii , Telmessus acutidens, and Telmessus cheiragonus [1] . Distributed in the northern part of the Pacific Ocean [3] .
| Cheiragonidae |
Erimacrus isenbeckii |
| Scientific classification |
|---|
| No rank : | Bilateral symmetrical |
| Subsection : | Geterotremata |
| Superfamily : | Cheiragonoidea Ortmann, 1893 |
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| International scientific name |
|---|
Cheiragonidae Ortmann , 1893 |
| Synonyms |
|---|
- Telmessidae Guinot , 1977
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| Childbirth |
|---|
- Erimacrus Benedict, 1892
- Telmessus White, 1846
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For the first time, the family was singled out in 1893 by the American zoologist Arnold Eduard Ortman , which was considered in its composition by the only genus - Cheiragonus (later the name is recognized as a younger synonym for Telmessus ) [3] . From the 1920s to the 1970s, representatives of this family were considered as part of the Atelecyclidae family [3] [4] . The restoration of the group in the family rank was made in 1977 by the French carcinologist Daniel Gino [3] . The reason for this was the structure of the larvae, unusual for crabs, and the overlapping of the female's genital openings with cephalothorax sternite [3] .
