Medaeus Dana, 1851

Genus Medaeus Dana, 1851 View in CoL

Type species. Medaeus ornatus Dana, 1852 View in CoL , by monotypy; gender masculine.

Remarks. Mendoza et al. (2022) presented a multilocus molecular phylogeny of the crab superfamily Xanthoidea MacLeay, 1838 in which they recognised six xanthoidean families. including Xanthidae MacLeay, 1838 ; Panopeidae Ortmann, 1893 ; Antrocarcinidae Ng & Chia, 1994; Garthiellidae Mendoza & Manuel-Santos, 2012; Linnaeoxanthidae Števčić, 2005 and Nanocassiopidae Števčić, 2013 . According to Mendoza et al. (2022), Medaeus is in the same clade as Garthiella Titgen, 1986 and several other xanthid genera, and together are apparently basal to all other Xanthoidea . This familial classification, however, is not adopted as a full taxonomic revision of the Xanthoidea , including formal diagnoses of these families, is still pending and beyond the present scope of this study. Consequently, the classification in the Systema Brachyuroum of Ng et al. (2008) is followed, where Medaeus is retained in the family Xanthidae and the subfamily Euxanthinae Alcock, 1898 .