Periclimenaeus Borradaile, 1915

Bruce, A. J., 2010, More pontoniine shrimps (Crustacea: Decapoda: Palaemonidae) from the CReefs 2009 Heron Island expedition, Zootaxa 2604 (1), pp. 20-36 : 21

publication ID	https://doi.org/ 10.11646/zootaxa.2541.1.3
persistent identifier	https://treatment.plazi.org/id/1F1687AB-FFA5-5D3B-FF5F-D7DE1E0B0B68
treatment provided by	Felipe
scientific name	Periclimenaeus Borradaile, 1915
status

Treatment

Genus Periclimenaeus Borradaile, 1915 View in CoL

Periclimenaeus pachydentatus Bruce, 1969 View in CoL

Periclimenaeus pachydentatus Bruce, 1969: 162–163 View in CoL . — Bruce, 1993: 832–833, fig. 3. — Bruce, 2005: 338–341, figs 9– 10 (figs of holotype).

Material examined. 1 ♂, 1 ov. ♀, CLs 9.3, 8.5, Heron Island reef, north-eastern side, HI09-076F, 23°25.990’S 151°55.601’E, 13m, 22 November 2009, coll. N.L. Bruce & K. Schnabel, QM W31440 GoogleMaps .

Diagnosis. Rostrum robust, dentition. 6/0, first dorsal rostral tooth stout, blunt, transversely compressed; carapace with supraorbital tubercles; first pereiopods without dactylar setal tuft; minor second pereiopod dactyl elongate, with numerous small acute teeth along distal half of cutting edge; dactyl of third pereiopod simply biunguiculate, with distal accessory tooth only; dorsal telson spines large, at about 0.25 and 0.65 of telson length.

Description. The specimens agree well with previous descriptions. The male specimen lacks most of the rostrum and the female has a rostral dentition of 6/0. The male major second pereiopod chela is 1.8 times the CL and the female 1.65 times, both present on the right side.

Host. Botrylloides leachi (Savignyi, 1816) , Styelidae [ Ascidiacea], det. P. Kott, a new host record. Previously reported in association with Hypodistoma deerratum (Sluiter, 1885) by Bruce (1981) and Fransen (2006).

Distribution. First recorded from the Gulf of Carpentaria and previously reported from Heron Island by Bruce (1981); also known from Western Australia (Bruce, 1992), the Philippines ( Bruce, 2005) and Papua New Guinea ( Fransen, 2006).

Remarks. Both specimens are in good condition, intact.

Periclimenaeus pachydentatus has been recorded from Papua New Guinea by Fransen (2006). His male specimen differs slightly from the holotype female in the presence of small denticles of the ventral margin of the third pereiopod dactylar corpus which are lacking in that specimen ( Bruce, 2005). A small but very distinct inferior orbital angle is also present, which is quite lacking in the holotype and in the present specimens.