Mirapecten Dall, Bartsch & Rehder, 1938

Dijkstra, Henk H. & Beu, Alan G., 2018, Living Scallops of Australia and Adjacent Waters (Mollusca: Bivalvia: Pectinoidea: Propeamussiidae, Cyclochlamydidae and Pectinidae), Records of the Australian Museum (Rec. Aust. Mus.) 70 (2), pp. 113-330 : 200

Mirapecten Dall, Bartsch & Rehder, 1938

Mirapecten Dall, Bartsch & Rehder, 1938: 84 , pl. 21, figs 7–8. Type species (by original designation): Mirapecten thaanumi Dall, Bartsch & Rehder, 1938 (= Pecten mirificus Reeve, 1853 ); Recent, off south coast of Molokai, Hawaii, in 70–99 fathoms [128–181 m].

Somalipecten Waller, 1986: 41 . Type species (by original designation): Somalipecten cranmerorum Waller, 1986 ; Recent, off Somalia.

Diagnosis. Medium-sized Decatopectinini with from 5–7 evenly spaced primary squamous plicae to 7–11 unevenly spaced primary and secondary plicae, squamous on most specimens, noduliferous or smooth on others; valves flattened, subcircular to circular, right valve slightly more convex than left, inequivalve, inequilateral to equilateral, auricles unequal in size; microsculpture of closely spaced commarginal lamellae; internal rib carinae present. Hinge with prominent dorsal teeth and weak resilial teeth, intermediate teeth lacking; byssal notch moderately deep, byssal fasciole rather narrow, ctenolium well-developed.

Distribution. Miocene–Recent (Hayami, 1989: 16). Tropical Indo-West Pacific, living in the littoral to sublittoral zones amongst coral or coral rubble on soft sediment.

Discussion. Hertlein (1969: N366) treated Mirapecten as a subgenus of Semipallium [Jousseaume] Lamy, 1928 and placed it in the suprageneric group of Decatopecten . Waller (1986: 40), followed by Vaught (1989: 119), considered Mirapecten to be a full genus in the tribe Decatopectinini . For comparison with Somalipecten Waller, 1986 , see Dijkstra & Kilburn (2001: 283).