First record of the genus Eumunida Smith, 1883 (Crustacea, Decapoda, Eumunididae) from the southwestern Atlantic, with the description of a new species

Abstract

Eumunida picta Smith, 1883, was considered for over a century an amphi-Atlantic species and the only representative of the genus in the Atlantic Ocean, until being split into three species: E. picta sensu stricto (from the northwestern Atlantic), E. bella de Saint Laurent & MacPherson, 1990 and E. squamifera de Saint Laurent & MacPherson, 1990 (from the northeastern and southeastern Atlantic, respectively). Eumunida is now expanded to include a new species, E. notialis, from off the Brazilian coast. Hence, this is the first record of Eumunida and Eumunididae from the southwestern Atlantic. The new species differs from all its Atlantic counterparts in having (1) four hepatic spines; (2) two carapace inframarginal spines; (3) the distal end of the antennal acicle nearly reaching to the articulation between fourth and fifth antennal segments; and (4) the anterolateral spine of the second pleonal tergite obsolete.

First record and a new species of Euphrosynoplax (Crustacea: Pseudorhombilidae) from the southwestern Atlantic

“…The north-south disjunct distribution pattern of Euphrosynoplax is highly comparable to those of other moderately deep-water decapods, such as Eumunida, Neopilumnoplax, Robertsella, Speocarcinus and Trichopeltarion (Brandão et al, 2010(Brandão et al, , 2012Tavares & Melo 2005Tavares & Gouvea, 2013;Tavares & Lima 2019). Such distribution gaps may well be only the result of poor distributional information and detectability, as exemplified by the deep-water genus Chaceon, whose fragmented distribution of some of its southwestern Atlantic representatives has been slowly filled as a result of the intensification of deep-water commercial fishing and detection facilitated by the species' large size (Manning & Holthuis, 1989;Tavares & Pinheiro, 2011).…”

New occurrences of squat lobsters of the genus Eumunida Smith, 1883 (Decapoda, Eumunididae) in New Caledonia, the Solomon Islands and Papua-New Guinea, with the description of a new species

“…The genus Eumunida Smith, 1883 contains 33 species, four in the Atlantic Ocean Tavares & Lima 2019), 28 in the Indo-West Pacific Komai & Tsuchida 2014;Macpherson et al 2017;Komai et al 2019;Osawa & Higashiji 2019) and one in the eastern Pacific (Baba & Wicksten 2019). All the species are common on the continental shelf and slope, usually associated with scleractinian and gorgonian corals (Quattrini et al 2012;Ross et al 2015).…”