Merhippolyte americana Holthuis, 1961
publication ID |
https://doi.org/ 10.11646/zootaxa.4131.1.1 |
publication LSID |
lsid:zoobank.org:pub:48CA9FCC-8044-448D-8CA5-5CD5B403D884 |
DOI |
https://doi.org/10.5281/zenodo.6058278 |
persistent identifier |
https://treatment.plazi.org/id/03B787CC-B262-9E7E-FF55-BA4C7711FD7C |
treatment provided by |
Plazi |
scientific name |
Merhippolyte americana Holthuis, 1961 |
status |
|
Merhippolyte americana Holthuis, 1961 View in CoL
( Figures 7 View FIGURE 7 , 8 View FIGURE 8 )
Merhippolyte americana Holthuis 1961: 1 View in CoL , fig. 1.
Material examined. Brazil, Ceará: 1 male, 1 ov. female, MZUSP 31505, 222 km (120 nautical miles) off Fortaleza, Banco Canopus, 60–70 m, coll. J. Coltro, 20.xi.2005.
Distribution. Western Atlantic: USA (North Carolina), Brazil (Ceará, São Paulo, Rio Grande do Sul), Argentina (Buenos Aires) ( Christoffersen 1998; present study).
Remarks. The present material from Ceará agrees well with the description of Merhippolyte americana provided by Holthuis (1961), except for a few morphological details. For instance, in the Ceará specimens, the rostrum bears three dorsal teeth (vs. four in Holthuis’ material); the second pereiopod carpus has 12 joints (vs. 13- 14 in Holthuis’ material), whilst the ischium is articulated (vs. not articulated in Holthuis’ description); the third pereiopod merus bears only one spiniform seta (vs. two in Holthuis’s material); the appendix masculina on the second male pleopod is shorter than appendix interna (vs. slightly longer than appendix interna in Holthuis’ description); and finally, the distal margin of the telson is shorter, about the same length as the lateral pair of distal spiniform setae (vs. longer, at least twice the length of these spiniform setae in Holthuis’ material) (cf. Figs. 7 View FIGURE 7 B, E, J, 8A, E, F and Holthuis 1961: fig. 1a, c, m, n, p). In addition, the third maxilliped bears one small spiniform seta on the distolateral margin of the antepenultimate article ( Fig. 7 View FIGURE 7 G), which, however, may have been overlooked by Holthuis (1961). For the time being, these differences are considered to be part of intraspecific variation of the species; however a further, more detailed comparison (including COI gene) between the populations from Brazil and the eastern USA is highly desirable. To our knowledge, the present material represents the first record of M. americana from northeastern Brazil.
MZUSP |
Museu de Zoologia da Universidade de Sao Paulo |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |
Merhippolyte americana Holthuis, 1961
Pachelle, Paulo P. G., Anker, Arthur, Mendes, Cecili B. & Bezerra, Luis E. A. 2016 |
Merhippolyte americana
Holthuis 1961: 1 |