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Juxtamusium maldivense

Bivalvia - Pectinida - Pectinidae

Taxonomy
Pecten maldivensis was named by Smith (1903). It is extant.

It was recombined as Juxtamusium maldivense by Dijkstra (1984), Rombouts (1991), Dijkstra and Kilburn (2001).

Synonymy list
YearName and author
1903Pecten maldivensis Smith p. 622 figs. pl. 36, figs. 19-20
1984Juxtamusium maldivense Dijkstra p. 8
1991Juxtamusium maldivense Rombouts p. 60
2001Juxtamusium maldivense Dijkstra and Kilburn p. 281

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
—OstreomorphiFerussac 1822
RankNameAuthor
—OstreioniFerussac 1822
—OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderPectinida(Gray 1854)
suborderPectinidina(Adams and Adams 1858)
superfamilyPectinoideaRafinesque 1815
—PectinoidaeRafinesque 1815
familyPectinidaeWilkes 1810
subfamilyPectininaeWilkes 1810
tribeDecatopectininiWaller 1986
genusJuxtamusiumIredale 1939
speciesmaldivense(Smith 1903)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

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Diagnosis
ReferenceDiagnosis
H. H. Dijkstra and R. N. Kilburn 2001Shell thin, height to 25 mm (average ca. 15 mm), compressed, suborbicular, higher than wide, slightly equilateral, auricles unequal, umbonal angle ca. 90°. Both valves slightly convex, RV somewhat more so than LV, with numerous fine, irregularly spaced, angular radial riblets, increasing by bifurcation and/or intercalation, and microscopic very closely spaced commarginal lamellae. Posterior auricle larger than anterior, with ca. 3–7 radial riblets, sometimes very weak. Hinge straight. Byssal fasciole narrow, byssal notch shallow. Ctenolium present along suture in both valves. Resifer oblong and oblique. Auricular crura weak. Inner surface somewhat plicated near ventral margin. Colour variable, cream to pink, with shades of red or brown and lighter and darker blotches, interior purple or reddish, RV paler; sometimes more uniform in colour.