Alpheus amblyonyx Chace, 1972 sensu

Anker, Arthur, Tavares, Marcos & Mendonça, Joel B., 2016, Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns i, Zootaxa 4138 (1), pp. 1-58: 14-15

publication ID

http://doi.org/10.11646/zootaxa.4138.1.1

publication LSID

lsid:zoobank.org:pub:92CE67CD-BA74-4DE6-8117-13E2F19632DC

persistent identifier

http://treatment.plazi.org/id/515E7E37-E459-FFD8-AAD6-9F4E29C3DF9C

treatment provided by

Plazi

scientific name

Alpheus amblyonyx Chace, 1972 sensu
status

sensu

Alpheus amblyonyx Chace, 1972 sensu  lato

( Fig. 2View FIGURE 2)

Alpheus amblyonyx Chace 1972: 59  , fig. 16; Pequegnat & Ray 1974: 245, fig. 49 b; Christoffersen 1979: 302, fig. 1; Gore 1981: 151; Lemaitre 1984: 426; Rodríguez 1986: 130, fig. 31; Abele & Kim 1986: 197, 208, 209, figs. b –d; Martínez-Iglesias et al. 1997: 403, fig. 2; Christoffersen 1998: 356; McClure 2005: 125, fig. 3; Serejo et al. 2007: 198, text. fig.; Alves et al. 2008: 48; Souza et al. 2011: 46; Soledade & Almeida 2013: 94.

Alpheus cf. amblyonyx  — Reed et al. 1982: 769; Williams 1988: 67, 71.

Alpheus macrocheles  — Rathbun 1901: 105; Zimmer 1913: 386, fig. F (not A. macrocheles (Hailstone, 1835 ))  .

Crangon macrocheles  — Schmitt 1935: 142 (not A. macrocheles (Hailstone, 1835 ))  .

Material examined. Brazil: 1 ovig. female, MZUSPAbout MZUSP 30317, Trindade Island, Ilha da Racha, 20 ° 30 ’ 26.5 ”S – 29 ° 20 ’40.0”W, depth: 32 m, under rocks, coll. T. Simon, 30.i. 2012; 1 ovig. female, MZUSPAbout MZUSP 33262, Trindade Island, Ilha da Racha, 20 ° 30 ’ 26.5 ”S – 29 ° 20 ’40.0”W, depth: 25 m, under rocks, coll. J.B. Mendonça, 12.xi. 2014; 1 juvenile, MZUSPAbout MZUSP 30257, Trindade Island, Ponta do Monumento, 20 ° 30 ’ 10.3 ”S – 29 ° 20 ’ 36.1 ”W, depth: 12.1 m, coll. J.B. Mendonça, 16.vi. 2012. Size of largest female: cl 5.0 mm ( MZUSPAbout MZUSP 33262).

Additional (extra-limital) material examined. Mexico: 1 male, OUMNH.ZC. 2016.02 .0 34, Cozumel Island, about 1 km north of Playa Corona, coral rubble flat near fossilised platform wall, depth: 2 m, in dead conch shell, coll. A. Anker & J. Duarte, 08.vii. 2010 (fcn COZ 2 -006).

Description. See Chace (1972) for detailed original description and illustrations; see also Christoffersen (1979) for additional figures and Anker & De Grave (2012 a) for colour photographs (see also Fig. 2View FIGURE 2).

Distribution. Western Atlantic: Gulf of Mexico; Florida; off Maryland (including some problematic records, see below); throughout Caribbean Sea; Brazil: Ceará to Espírito Santo, North Chain Seamounts, Fernando de Noronha, Atol das Rocas  , Vitória-Trindade Seamount Chain, Trindade & Martin Vaz Archipelago ( Chace 1972; Gore 1981; Williams 1988; Christoffersen 1998; Serejo et al. 2006, 2007; Soledade & Almeida 2013 and references therein; present study).

Ecology. Shallow and deeper subtidal coral reefs and associated habitats (e.g. seagrass beds) with abundance of coral rubble; typically in or under coral rubble, also in crevices of coralline algae; depth range: 0–24 m, exceptionally down to 145 m ( Gore 1981, but see below).

Remarks. Alpheus amblyonyx  was previously reported from Trindade Island and Vitória-Trindade Seamount Chain by Serejo et al. (2007), and is also known from Atol das Rocas  and the continental coast of Brazil ( Serejo et al. 2006; Soledade & Almeida 2013 and references therein). Alpheus amblyonyx  is closely related to A. macrocheles ( Hailstone 1835)  , a species widely distributed in the eastern and central Atlantic ( De Grave et al. 2014). All records of A. macrocheles  from Brazil (e.g., Ramos-Porto 1979) are problematic as they may refer to A. amblyonyx ( Christoffersen 1998)  or yet another, possibly undescribed taxon in the A. macrocheles  species complex. Therefore, all Brazilian material identified as A. amblyonyx  (including present material) or A. macrocheles  will require a thorough comparison (morphology, colour patterns, DNAAbout DNA) with the Caribbean material of A. amblyonyx  , as well as with A. macrocheles  . It can be already noted that the colour pattern of the ovigerous female from Trindade Island ( Fig. 2View FIGURE 2) differs in some details from that of the Caribbean specimens of A. amblyonyx  (see Anker & De Grave 2012 a: fig. 4 C, D), for instance, in the presence of white narrow transverse bands delimiting pleonites and short aligned streaks on the pleura and flanks of the carapace. For this reason, the present material was referred to as A. amblyonyx sensu  lato.

Along the same lines, all records of A. amblyonyx  from deeper water (below 70 m) need to be re-examined. These records include several mysterious specimens collected off central-eastern Florida that “appear to be more closely allied to A. macrocheles  ” (see Gore 1981, under A. amblyonyx  ); a specimen identified as A. cf. amblyonyx  from a deep-water (80 m) coral reef of Oculina varicosa Lesueur  , also off eastern Florida ( Reed et al. 1982); and especially “three lots of specimens” that “key out to A. amblyonyx  but … differ in several respects from it”, from off eastern Florida and Veatch Canyon off Maryland, USA, tentatively reported as A. cf. amblyonyx  by Williams (1988).

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

DNA

Department of Natural Resources, Environment, The Arts and Sport

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Alpheidae

Genus

Alpheus

Loc

Alpheus amblyonyx Chace, 1972 sensu

Anker, Arthur, Tavares, Marcos & Mendonça, Joel B. 2016

2016
Loc

Alpheus cf. amblyonyx

Williams 1988: 67
Reed 1982: 769

1982
Loc

Alpheus amblyonyx

Souza 2011: 46
Alves 2008: 48
Serejo 2007: 198
McClure 2005: 125
Christoffersen 1998: 356
Martinez-Iglesias 1997: 403
Rodriguez 1986: 130
Abele 1986: 197
Lemaitre 1984: 426
Gore 1981: 151
Christoffersen 1979: 302
Pequegnat 1974: 245Chace 1972: 59

1974
Loc

Crangon macrocheles

Schmitt 1935: 142

1935
Loc

Alpheus macrocheles

Zimmer 1913: 386
Rathbun 1901: 105

1901