Ethusa chibai Karasawa, 1993

Guinot, Danièle, 2023, A new subfamily classification of the highly diversified Dorippidae H. Milne Edwards, 1837 (Crustacea, Decapoda, Brachyura, Dorippoidea), using morphological, molecular and palaeotonlogical data, with special emphasis on its unique female reproductive system, Zoosystema 45 (9), pp. 225-372 : 363

publication ID	https://doi.org/10.5252/zoosystema2023v45a9
publication LSID	urn:lsid:zoobank.org:pub:69C34731-8C25-4A1E-B336-B222CD3CBAC3
persistent identifier	https://treatment.plazi.org/id/03CDBE74-9388-B5A8-CEDE-FE36FA3FFC37
treatment provided by	Felipe (2023-06-14 12:53:19, last updated by GgImagineBatch 2023-06-14 13:06:18)
scientific name	Ethusa chibai Karasawa, 1993
status

Treatment

Ethusa chibai Karasawa, 1993: 44 , fig. 4, pl. 8, fig. 12; 1999: fig. 6. — Karasawa & Kato 2001: Database. — Schweitzer et al. 2010: 80; 2021: 3. — Sasaki 2019: 7812. — Van Bakel et al. 2020: fig. 10.21.

REMARKS

In this crab from the Lower Pliocene of southwestern Japan, the “inflated branchial region”, the two epibranchial lobes “divided into two by a shallow, oblique groove”, which are not very visible in the figure, are somewhat reminiscent of the ridged branchial region of Ethusa popognensis (see below). According to De Angeli et al. (2009: 176), E. chibai can be distinguished from E. popognensis by “a carapace longer, dorsal surface smoother, and shallow branchiocardiac groove”.