Macroacaena Tucker, 1998

Van Bakel, Barry W. M., Guinot, Danièle, Artal, Pedro, Fraaije, René H. B. & Jagt, John W. M., 2012, A revision of the Palaeocorystoidea and the phylogeny of raninoidian crabs (Crustacea, Decapoda, Brachyura, Podotremata) 3215, Zootaxa 3215 (1), pp. 1-216 : 84

Genus Macroacaena Tucker, 1998

Macroacaena Tucker, 1998: 325 .

Carinaranina Tucker, 1998: 334 .

Type species. Lyreidus succedanus Collins & Wienberg Rasmussen, 1992 , by original designation. Type species, by original designation, of Carinaranina is Eumorphocorystes naselensis Rathbun, 1926a .

Species included. Macroacaena alseana ( Rathbun, 1932) , M. bispinulata ( Collins & Wienberg Rasmussen, 1992) , M. chica Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003 , M. franconica Schweigert, Feldmann & Wulf, 2004 , M. fudoujii (Karasawa, 2000) , M. johnsoni (Rathbun, 1935) , M. leucosiae ( Rathbun, 1932) , M. marionae ( Tucker, 1998) , M. naselensis (Rathbun, 1926) , M. rosenkrantzi ( Collins & Wienberg Rasmussen, 1992) , M. schencki ( Rathbun, 1932) , M. succedana ( Collins & Wienberg Rasmussen, 1992) , and M. venturai Vega, Nyborg, Fraaye & Espinosa, 2007 .

Remarks. In Tucker’s PhD thesis (1995), which was distributed in printed form, the new genus Macracaena (1995: 113) was attributed to the Lyreididae . This name, however, is preoccupied by Macracaena Common, 1958 , a genus of moth in the family Gelechiidae Stainton, 1854 . The generic name of the crab was formally introduced as Macroacaena by Tucker (1998). Schweitzer et al. (2003a: 29) synonymised Carinaranina and Macroacaena on the basis of similarities of the dorsal carapace (see also Schweitzer et al. 2010: 71). The type species of both genera retain ventral details and a re-examination is called for in order to verify the synonymy.

Tucker (1998: 325) noted that Macroacaena ‘possibly’ had the ‘processes to lock the abdomen in the sternum’ and attributed the genus to Lyreidinae . Material of the various species of Macroacaena needs to be re-evaluated to document the presence of hook-like projections.