Lybia H. Milne Edwards, 1834

Mendoza, Jose Christopher E. & Ng, Peter K. L., 2011, The Polydectinae Dana, 1851, of the Philippines, with description of a new genus for Lybia hatagumoana Sakai, 1961 (Crustacea: Decapoda: Brachyura: Xanthidae), Zootaxa 3052, pp. 51-61 : 52

Lybia H. Milne Edwards, 1834

Melia Berthold, 1827: 255 . — Latreille 1828: 705; 1829: 43 (note). —H. Milne Edwards 1834, 431. — Dana 1851: 122; 1852b: 229; 1853: 1423. — Ortmann 1893: 474. — Alcock 1898: 76, 230. — Borradaile 1902: 249. — Bouvier 1915: 263 (86). Lybia H. Milne Edwards, 1834: 431 , note 2. — Rathbun 1904: 102. — Nobili 1906: 294. — Klunzinger 1913: 278 (182). — Balss 1934: 519; 1938: 70; 1957: 1652. — Ward 1939: 10. — Barnard 1950: 247, 248. — Hemming 1958: 34. — Edmondson 1962: 216, 302. — Sakai 1965: 162; 1967: 77; 1976: 503. — Guinot 1967: 268, 274; 1976: 69. — Serène 1968: 88; 1984: 25. — Dai et al. 1986: 352. — Dai & Yang 1991: 378. —Ng et al. 2008: 201 (list). — De Grave et al. 2009: 43 (list). Prolybia Ward, 1933: 386 . — Balss 1957: 1653. — Serène 1965: 26.

Remarks. The nomenclature of Lybia H. Milne Edwards, 1834 (= Melia Berthold, 1827 ) has been discussed at length by Ng et al. (2008: 22, 23). The genus currently contains 10 species (Ng et al. 2008) but requires a revision as not all the species have been well defined. Guinot (1976) noted that Lybia could be divided into three distinct morphological groups, and presented several characters that could be useful in elucidating the relationships among the different species in the genus, such as the outline of the carapace, and condition of the endostome, lacinia of the first maxillipeds, male thoracic sternum, male abdomen and G1 (see discussion on Tunebia gen. nov. below). Tan & Ng (1994) commented that a fourth group could be recognized. Preliminary molecular studies show that Lybia is polyphyletic ( Lai et al. 2011). However, a revision of the genus will require a more extensive series of specimens as well as the examination of the types of the different species.