Salmoneus chadwickae Ďuriš and Horká, 2016

Ashrafi, Hossein, Ďuriš, Zdeněk & Naderloo, Reza, 2020, A new species and a new record of alpheid shrimps of the genus Salmoneus Holthuis, 1955 (Crustacea: Decapoda: Alpheidae) from Iran, Zootaxa 4838 (4), pp. 503-514 : 511-512

Salmoneus chadwickae Ďuriš and Horká, 2016

( Fig. 5 )

Salmoneus chadwickae Ďuriš & Horká, 2016: 774 , Figs. 1 -7.

Material examined. 1 ovigerous and 1 non-ovigerous spm ( ZUTC 6640 ), sandy bottom with boulders and corals, shallow subtidal, Larak Island , Persian Gulf , 26° 53’ 2.65” N, 56° 24’ 2.98” E, 02 Feb. 2018, coll. H. Ashrafi. - 2 non-ovigerous spms ( ZUTC 6641 ) rocky with boulders, intertidal, Ramchah , Qeshm Island, Persian Gulf , 26° 53’ 42.81” N, 56° 09’ 41.09” E, 30 Jan. 2018, coll. H. Ashrafi. – 3 ovigerous and 2 non-ovigerous spms ( ZUTC 6642 ), rocky bed with boulders, shallow subtidal, south Hengam Island, Persian Gulf, 26° 36’ 50.60” N, 55° 52’ 34.91” E, 17 Oct. 2016, coll. H. Ashrafi, R. Abdollahi & A. Doostali .

Remarks. The present material of S. chadwickae is completely consistent with the original description, drawings, and photos of the species by Ďuriš & Horká (2016). The rostrum length varies from reaching the middle to the end of the second antennular segment; the dorsal carina on the rostrum and carapace is long, nearly 0.7 as long as the carapace length; the orbital teeth completely cover the eye cornea from dorsal view and reach to about the midlength of the basal segment of the antennular peduncle; the first pereiopods are strongly asymmetrical in shape and unequal in size; the major cheliped carpus is produced into a stout subtriangular projection medio-distally; the palm bears a shallow depression dorsally and a deep proximo-ventral notch medially; the tip of the fixed finger is strongly upturned in about right angle and the telson bears a shallow median notch posteriorly.

Coloration. Same as the type material, bright yellow across the entire body and appendages ( Ďuriš & Horká 2016: 780, Fig. 7).

Ecology. The Persian Gulf specimens were found beneath boulders semi-buried in sand in low intertidal and shallow subtidal zones. The type specimens from the north-eastern Red Sea were found in a similar habitat ( Ďuriš & Horká 2016).

Distribution. Previously known only from the north Red Sea: Gulf of Aqaba (type locality), and the south Red Sea (latter – not specified locality; see Ďuriš & Horká 2016). Newly recorded from the Persian Gulf, thus, the known range extended significantly (present report).

Figures

FIGURE 1. Salmoneus rashedi n. sp., non-ovigerous specimen, holotype MNHN-IU-2016-1512. (A) carapace, lateral view; (B) anterior region of carapace and antennae, dorsal view; (C) same, lateral view; (D) telson and uropods; (E) posterior pleonal somites, lateral view. Scale bars 1 mm.

FIGURE 5. Salmoneus chadwickae Ďuriš & Horká, 2016, ovigerous specimen ZUTC 6642, CL 4.3 mm. Photo by R. Abdol- lahi.