Hemimarginula pumila

Hemimarginula pumila, the pygmy ermarginula, is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.[1][2]

Hemimarginula pumila
Shell of Hemimarginula pumila (syntype at MNHN, Paris)
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Family: Fissurellidae
Genus: Hemimarginula
Species:
H. pumila
Binomial name
Hemimarginula pumila
Adams, 1852
Synonyms
  • Emarginula pumila Adams, 1852
  • Emarginula rollandi P. Fischer, 1857
  • Emarginula tumida G. B. Sowerby II, 1874 (junior synonym)

Description

The whitish to pale brownish conical shell is 6 to 13 mm long on a broadly oval base with an irregularly scalloped margin. The height is variable and the shell is usually much depressed. The apex is nearly centrally located. There is a narrow exhalant slit at the front margin. There are about twelve broad ribs that are minutely scabrous. These ribs are crossed by three buff, radiating bands. The radiating ribs are distant and corrugated. The interstices are deeply latticed and corrugated.

Distribution and habitat

This keyhole limpet is fairly common and can be found on or under rocks in tide pools, shallow water and in the intertidal to the sublittoral zone (from 2m to 27 m deep) along the coasts of Southeastern Florida south to Brazil. They can also be found living on mangrove oysters.[3]

This species occurs in the following locations:[1]

References
  1. Emarginula pumila A. Adams, 1852. Retrieved through: World Register of Marine Species on 19 April 2010.
  2. McLean J.H. (2011) Reinstatement of the fissurellid subfamily Hemitominae, with the description of new genera, and proposed evolutionary lineage, based on morphological characters of shell and radula (Gastropoda: Vetigastropoda). Malacologia 54(1-2): 407-427.
  3. Coomans, HE, Biological aspects of mangrove molluscs in the West Indies, Malacologia, vol. 9 nr. 2, page 81, December 1969
  • Fischer-Piette, E., 1950. Listes des types décrits dans le Journal de Conchyliologie et conservés dans la collection de ce journal. Journal de Conchyliologie 90: 8-23
  • Fischer, P., 1857. Description d'espèces nouvelles. Journal de Conchyliologie 5: 355-356
  • Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas
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