Shimek, R.L., 1997. A new species of eastern Pacific Fissidentalium (Mollusca: Scaphopoda) with a symbiotic sea anemone. Veliger 40 2: 178-191.

37784

Shimek, R. L.

1997

40(2): 178-191

Publication

Fissidentalium actiniophorum sp. nov. is described morphometrically from specimens collected from deep water off California. The nearest geographical members of Fissidentalium are Fissidentalium megathyris and Fissidentalium erosum. Fissidentalium actiniophorum is distinguished from these species primarily on the basis of shell and soft-body-part proportions.Five shell and five soft-part measurements were taken. From these an were derived for a total of 22 factors or indices. Fissidentalium actiniophorum differed statistically from both F. megathyris and F. erosum in all shell measurements, all derived shell factors, and most soft-part measurements. It differed from either F. megathyris or F. erosum in one of the two ratios of the gonadal length to the total visceral length. It did not differ from either species in the ratio of the gut lobe length to the total visceral length, or in some of the ratios of gonadal length to total visceral length.

Ecology
Systematics, Taxonomy

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