Talochlamys gladysiae ( Melvill, 1888 ) Dijkstra & Maestrati, 2008

Dijkstra, Henk H. & Maestrati, Philippe, 2008, New species and new records of deep-water Pectinoidea (Bivalvia: Propeamussiidae, Entoliidae and Pectinidae) from the South Pacific, Mémoires du Muséum national d'Histoire naturelle 196, pp. 77-114 : 106-107

publication ID	978-2-85653-614-8
persistent identifier	https://treatment.plazi.org/id/A73487B5-2003-E35D-FED9-BFFBFE33F9E0
treatment provided by	Felipe
scientific name	Talochlamys gladysiae ( Melvill, 1888 )
status	comb. nov.

Treatment

Talochlamys gladysiae ( Melvill, 1888) View in CoL comb. nov.

Figs 48, 49

Pecten gladysiae Melvill, 1888: 279 View in CoL , pl. 2, fig. 5.

Synonym:

Chlamys elsae Wagner, 1988: 37 View in CoL , 6 figs.

Other reference:

Chlamys gladysiae View in CoL - Dijkstra 1991: 31.

TYPE MATERIAL. — P. gladysiae : holotype NMW 1955.158 View Materials .10 . — C. elsae : holotype ZMA Moll. 3.88.030, 5 paratypes HPW 1313 .

TYPE LOCALITY. — P. gladysiae : unknown. — C. elsae : Philippines, Bohol, Panglao , taken by deep-water nets at 80-150 m.

MATERIAL EXAMINED. — The type material. 178˚35’E, 135-151 m, 3 spms, 3 lv, 2 rv; stn CP 1366, 18˚12’S, Fiji. MUSORSTOM 10: stn CP 1323, 17˚16’S, 177˚46’E, 143- 178˚33’E, 149-168 m, 1 lv, 4 rv; stn CP 1370, 18˚12’S, 178˚33’E, 173 m, 1 lv; stn CP 1324, 17˚17’S, 177˚47’E, 102-104 m, 1 spm 113-123 m, 8 lv, 11 rv; stn CP 1371, 18˚12’S, 178˚33’E, 135-151 (Figs 48, 49); stn CP 1349, 17˚31’S, 178˚39’E, 244-252 m, 1 rv; m, 11 lv, 7 rv .

stn DW 1357, 17˚49’S, 178˚47’E, 81-110 m, 3 lv; stn CP 1358, Solomon Islands. SALOMON 1: stn DW 1768, 08°21’S, 17˚49’S, 178˚47’E, 80-120 m, 4 spms, 1 lv, 1 rv; stn CP 1363, 160°42’E, 194-286 m, 1 rv; stn DW 1840, 10°17’S, 161°43’E, 18˚12’S, 178˚33’E, 144-150 m, 3 lv, 4 rv; stn CP 1364, 18˚12’S, 97-223 m, 1 lv, 1 rv.

DISTRIBUTION. — Philippines and Indonesia ( Dijkstra 1991: 31); live in 45-180 m (Dijkstra, unpubl. data). New records for the Solomon Islands and Fiji. Present material live in 104-135 m.

DESCRIPTION. — Shell up to c. 25 mm in height, thin, elongate, compressed, inequivalve and inequilateral, oblique posteriorly, right valve slightly more convex than left valve, auricles unequal in size, umbonal angle 90˚-95˚, colour highly variable: uniform orange, red, pink, purple or brown with blotches and V-shaped streaks.

Left valve with 29 squamous lirae of which 6 are more prominent, preradial microsculpture granular, commarginal lamellae on flanks of primary ribs and antimarginal sculpture anteriorly and posteriorly in early ontogeny, absent in late ontogeny. Anterior auricle with 8-10 scaly radial riblets, posterior auricle with 4 rather weak riblets.

Right valve almost identical in sculpture to left valve. Byssal notch broad, ctenolium well-developed with 6 teeth. Resilium small and slender.

REMARKS. — The present material is indistinguishable from the type specimens of Chlamys elsae from the Philippines .

This species was provisionally placed in Coralichlamys Iredale, 1939 by Wagner (1988: 39) and in Laevichlamys by Dijkstra & Kastoro (1997: 282). However, the monotypic coral dwelling Coralichlamys is irregular in shape and has secondary commarginal sculpture, while Laevichlamys has very weak and low radial sculpture (commarginal sculpture lacking) and some species have shagreen microsculpture in the early growth stage. The morphological characters of the present species are closer to those of Talochlamys (see diagnosis of Talochlamys , above, and the description of the present species).