Martesia striata (Linnaeus, 1758)Pholadoidea : Pholadidae
To size: To 50 mm. Shell Structure: Main body robust but brittle; posterior extension fragile. Equivalve: Equivalve. Equilateral: Inequilateral beaks close to the anterior. Tumidity: Tumid, especially across the umbos. Outline: Main body subovate, posterior extension narrower and may be irregular; anterior broadly rounded with initial pedal gape filled by the callum. Umbonal reflection covered by a large subcircular mesoplax; dorsal area behind mesoplax covered by a long lanceolate metaplax; posterior ventral region covered by a long lanceolate hypoplax. Contour: Main body of shell divided by a radial groove; posterior extension distinctly demarcated.
Sculpture: Area anterior of radial groove decussate; posterior area with weak concentric ridges; posterior extension with strong growth stops. Ligament: Small. Pallial Musculature: Apophysis long, thin; pallial sinus very deep; anterior adductor scar on umbonal reflection, posterior adductor scar large close to dorsal margin, siphonal muscle scar large in a vertical orientation; accessory ventral adductor scars on either side of condyle. Periostracum: Straw coloured, thin. Colour: Dirty white.
Distribution & Ecology
A wood borer, primarily a warm temperate to tropical species recorded rarely from British waters.
Juveniles & Similar Species
The juvenile shell lacks the posterior extension, is more globular in form with a pedal gape. Only mesoplax present.
Key Features & Similar Species
Listed are literature citing Martesia striata (Linnaeus, 1758). Reference containing the species Type Description is highlighted.
Linnaeus C 1758. Systema Naturae. Editio decima. 1. Regnum Animale Holmiae, Laurentii Salvii. 824pp.
- Conchological Society
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