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 Author Guinot, Danièle Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, case postale 53, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) daniele. guinot @ mnhn. fr Dedicated to the memory of my colleague and dearest friend Ngan Kee NG (1966 - 2022) guinot@mnhn.fr text Zoosystema 2023 2023-06-05 45 9 225 372 journal article 10.5252/zoosystema2023v45a9 1638-9387 8071253 urn:lsid:zoobank.org:pub:69C34731-8C25-4A1E-B336-B222CD3CBAC3 Ethusa chibai Karasawa, 1993 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”.