Salmoneus teres Manning & Chace, 1990

Anker, Arthur, 2007, New species and records of alpheid shrimps, genera Salmoneus Holthuis and Parabetaeus Coutière, from the tropical western Atlantic (Decapoda, Caridea), Zootaxa 1653, pp. 21-39: 32

publication ID

10.5281/zenodo.179791

publication LSID

lsid:zoobank.org:pub:C405C7B8-11C1-424F-944C-7C59BD03BCAC

persistent identifier

http://treatment.plazi.org/id/7F0587F6-FFF6-8025-D686-74D0C8F42B2D

treatment provided by

Plazi

scientific name

Salmoneus teres Manning & Chace, 1990
status

 

Salmoneus teres Manning & Chace, 1990 

Fig. 5View FIGURE 5, 8View FIGURE 8 a

Salmoneus teres Manning & Chace, 1990: 20  .

Material examined: 1 non-ovig. specimen (male?), MNHN-Na 13712, Guadeloupe, Grand Cul de Sac, under rock on sand-silt bottom, depth about 2 m, hand net, coll. F. Fasquel, Nov 1999.

Description: See Manning & Chace (1990).

Colour: Whitish, semitransparent, brownish inner organs partly visible through carapace ( Fig. 8View FIGURE 8 a).

Size: The Guadeloupe specimen has CL 4.4 mm, TL 13.1 mm, CL of the Ascension holotype was 2.8 mm ( Manning & Chace, 1990).

Ecology: The single specimen was found under a rock on the silt-sand bottom, at a depth of about 2 m.

Type locality: Ascension Island.

Distribution: Central Atlantic: Ascension Island ( Manning & Chace, 1990). Western Atlantic: Caribbean Sea: French Antilles: Guadeloupe (present study).

Remarks: The present specimen agrees in most features with the holotype of S. teres  from Ascension Island ( Manning & Chace, 1990), except for a few minor differences. According to Manning & Chace (1990), the rostrum is “without indication of median rostral carina”, while in the present specimen there is a very slight carina extending to the level of corneas ( Fig. 5View FIGURE 5 a). The lateral margins of the rostrum are somewhat more convex in the holotype (cf. Manning & Chace, 1990: fig. 10 b) compared to those of the Guadeloupe specimen ( Fig. 5View FIGURE 5 a). The carapace of the Guadeloupe specimen is distinctly pitted ( Fig. 5View FIGURE 5 a), however, these pits are also present in the type (R. Lemaitre, pers. comm.), although they were not illustrated and their presence was not mentioned by Manning & Chace (1990).

The finding of S. teres  in Guadeloupe eliminates this species from the list of endemic decapods of Ascension Island ( Manning & Chace, 1990), and represents a considerable range extension of S. teres  from the central Atlantic ( Ascension) to the western Atlantic (eastern Caribbean). Manning & Chace (1990) analyzed the faunal composition of the Ascension decapods and found that of 74 species known from this isolated central Atlantic island, 41 species (55 %) also occur in the western Atlantic. Therefore, more taxa that are currently believed to be endemic to Ascension may eventually be found in the western Atlantic (see also under S. setosus  ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Alpheidae

Genus

Salmoneus

Loc

Salmoneus teres Manning & Chace, 1990

Anker, Arthur 2007

2007
Loc

Salmoneus teres

Manning 1990: 20