An integrative approach to the systematics of the Berthella californica species complex (Heterobranchia: Pleurobranchidae)
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Berthella californica (W. H. Dall, 1900) is a widespread species of heterobranch sea slug distributed across the North Pacific Ocean, from Korea and Japan to the Galapagos Islands. Two distinct morphotypes are observed in B. californica, which differ in extern... ...
