Elasmopus longipropodus Senna & Souza-Filho, 2011

Alves, Jessika, Johnsson, Rodrigo & Senna, André R., 2016, On the genus Elasmopus Costa, 1853 from the Northeastern Coast of Brazil with five new species and new records, Zootaxa 4184 (1), pp. 1-40: 33

publication ID

http://doi.org/10.11646/zootaxa.4184.1.1

publication LSID

lsid:zoobank.org:pub:813D1C38-C237-4FFF-B352-433E651EB73D

persistent identifier

http://treatment.plazi.org/id/36672A18-FFA8-F44D-D3D5-FE329184FADA

treatment provided by

Plazi

scientific name

Elasmopus longipropodus Senna & Souza-Filho, 2011
status

 

Elasmopus longipropodus Senna & Souza-Filho, 2011  

Examined material. 3 males and 2 females, Parrachos do Pirangi, Pirangi Beach (35°7’20”W, 5°59’1”S), Rio Grande do Norte State, Brazil, September 2009, UFBA 3137 GoogleMaps   . 4 males, Parrachos do Pirangi, Pirangi Beach (35°7’20”W, 5°59’1”S), Rio Grande do Norte State, Brazil, September 2009, UFBA 3138 GoogleMaps   . 1 male, Ressueta and Rata Islands , Fernando de Noronha Archipelago (32º 25' 25″ W; 3º 51' 13″ S), Pernambuco State, Brazil, UFBA 2309 GoogleMaps   . 1 male, Ressueta and Rata Islands , Fernando de Noronha Archipelago (32º 25' 25″ W; 3º 51' 13″ S), Pernambuco State, Brazil, UFBA 2315 GoogleMaps   . 1 male, Ressueta and Rata Islands , Fernando de Noronha Archipelago (32º 25' 25″ W; 3º 51' 13″ S), Pernambuco State, Brazil, UFBA 2316 GoogleMaps   . 1 male, Ressueta and Rata Islands , Fernando de Noronha Archipelago (32º 25' 25″ W; 3º 51' 13″ S), Pernambuco State, Brazil, UFBA 2318 GoogleMaps   . 1 male, Ressueta and Rata Islands , Fernando de Noronha Archipelago (32º 25' 25″ W; 3º 51' 13″ S), Pernambuco State, Brazil, UFBA 2320 GoogleMaps   . 1 male, Ressueta and Rata Islands , Fernando de Noronha Archipelago (32º 25' 25″ W; 3º 51' 13″ S), Pernambuco State, Brazil, UFBA 2324 GoogleMaps   .

Diagnosis. Male gnathopod 2 elongate, palm shorter than posterior margin, with 3 processes, the first one rounded and distally truncated near hinge of the dactylus, bearing robust setae on each side, the second one midway subacute and slightly curved anteriorly, cusps not reaching inner distal rounded (Modified from Senna & Souza- Filho 2011).

Remarks. Elasmopus longipropodus   is now reported for the first time to Fernando de Noronha Archipelago and Municipality of Pirangi, Rio Grande do Norte State coasts ( Fig 29 View FIGURE 29 ). Elasmopus longipropodus   is also closely related to the recently described species E. thalyae Gouilieux & Sorbe, 2015   , because of the 3 processes on palm of male gnathopod very similar in both species. The species differ by: (1) the distinct lower lip not pronounced laterally in E. longipropodus   , (2) the basis posterior margin of the pereopods 6 and 7 very produced and rounded in E. thalyae   , (3) telson apicolateral cusps rounded in E. longipropodus   and acute in E. thalyae   . Many Elasmopus   species show remarkable uniformity ( Vader & Krapp-Schickel, 2012), therefore an accurate phylogenetic and biogeographic study is necessary in order to solve these taxonomic impasses.