Adipicola Dautzenberg 1927

• Main Author: Crespo, Enrique
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Mytiloida; Mytilidae; Adipicola; Pacific; New Zealand; Argentine; Forbes; Woodward; Iceland
• Online Access: https://zenodo.org/record/6038774; https://doi.org/10.5281/zenodo.6038774

Genus Adipicola Dautzenberg, 1927 [= Myrina Adams & Adams, 1857 (non Fabricius, 1807)]. Type species (by monotypy). Modiolarca pelagica Forbes in Woodward, 1854. Diagnosis. Shell medium size, shell length up to 40 mm, equivalve, subequilateral, fragile, antero-posteriorly elongate; external surface smooth with irregular growth lines covered by a yellowish to brownish periostracum, periostracal hair absent; valves without gape; umbo subcentral to anterior; internally white to nacreous; hinge plate without teeth or crenulations in adults. Posterior byssal retractors not divided; pedal retractors integrated with the posterior byssal retractors; demibranchs thick, outer and inner demibranchs equal in size. [Soft anatomical features after Coan et al. (2000); Gustafson et al. (1998); Ockelmann & Dinesen (2011).] Species included. Species are listed in Table 1. Distribution. NE Atlantic from Iceland to Portugal, Mediterranean Sea, Marmara Sea; SW and SE Atlantic (Argentine Sea and West Coast of South Africa), Indo-Pacific (West Coast of Sumatra); Pacific Ocean from off Hawaii and Japan to off New Zealand. Remarks. The genus Adipicola was proposed by Dautzenberg (1927) as a substitute name for Myrina Adams & Adams, 1857, which was preoccupied by Myrina Fabricius, 1807. Iredale (1939) suggested to replace Myrina by Miridas, but its type species Myrina coppingeri Smith, 1885, is currently placed in Idas (Dell 1987). Miridas and Adipicola are not synonyms, therefore. Warén (1991) regarded Adipicola to be synonymous with Idas stating that the main difference, the retention of "crenulated areas along the hinge line” in adult Idas but not in Adipicola, is only of infrageneric value. However, Coan et al. (2000), Gustafson et al. (1998) and Ockelmann & Dinesen (2011) found anatomical differences in pedal retractor muscle association, demibranch length and type of gills which would support the validity of two genera. Also, molecular data suggest that Adipicola and Idas are not monophyletic (Duperron & Gros ...