Tellimya tehuelcha new species: First record of Tellimya Brown, 1827 in South America (Bivalvia: Lasaeidae), with notes on life history and reproduction.

ZELAYA, D. G.; ITUARTE, C.

MALACOLOGIA

INST MALACOL

Año: 2012 vol. 55 p. 173 - 182

0076-2997

Galeommatoids are small bivalves usually living as epibionts on other invertebrates. Among them, a number of genera, such as Waldo Nicol, 1966, Scioberetia F. Bernard, 1895, Montacuta Turton, 1822, Tellimya Brown, 1827, Brachiomya Jespersen, Lützen & Nielsen, 2004, and Montacutella Jespersen, Lützen & Nielsen, 2004, are associated with sea urchins. Only Scioberetia and Waldo were reported from the southern tip of South America (F. Bernard, 1895a?c; Zelaya & Ituarte, 2002). Tellimya was proposed to include Mya suborbicularis Montagu, 1803, Ligula substriata Montagu, 1808, Mya ferruginosa Montagu, 1808, Tellimya lactea Brown, 1827, T. tenuis Brown, 1827, T. elliptica Brown, 1827 (based on Mya ferruginosa Montagu, 1808, and an objective synonym thereof), T. glabrum Brown, 1827, and T. ovata Brown, 1827. Subsequently, Gray (1847) designated Mya ferruginosa as its type species. Pérès (1937), Pophan (1940), Deroux (1961) and Oldfied (1961) provided information on the gross anatomy and functional morphology of the type species, and Kamenev (2008) clarified the details of the hinge morphology of the genus. Tellimya has sometimes been regarded as a subgenus of Montacuta (e.g., Pelseneer, 1925; Ponder, 1968), but currently regarded as a full genus (e.g., Chavan, 1969; Aartsen, 1997; Marshall, 2002; Kamenev, 2008). In the present paper, a new species of Tellimya from the Magellan Region, which constitutes the first record of the genus in South America, is described.