Littoridinops monroensis (Frauenfeld, 1863) Cockscomb Hydrobe

Scanning Electron Micrographs (SEM)

Recent

Littoridinops monroensis (Frauenfeld, 1863) Cockscomb Hydrobe

    Kice Island, Collier County, Florida UF514784 (2.38 mm.). SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL.

Fossil
Littoridinops monroensis (Frauenfeld, 1863) Cockscomb Hydrobe

    Lower Pinecrest beds, Upper Tamiami Formation, Sarasota County, Florida. The specimen measures 1.82mm in Hmax and is cagtalogued as UF304094. SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL

Littoridinops monroensis (Frauenfeld, 1863) Cockscomb Hydrobe
Beach drift, Playa Isabela, Puerto Rico (3 mm.). Digital images by David Kirsh.

    This species is a predominantly freshwater species in the family Hydrobiidae. Being salt-tolerant, it commonly occurs in in brackish ponds, often in high densities (Heard et al., 2002), and its shells have been recovered from a number of marine drift and nearshore sediment samples in FL and the Bahamas. Benthonella gaza of H. Vokes and E. Vokes (1984: 14, 51, 116; pl. 24, fig. 6) non Dall, 1889 is a synonym. The Dall species is a junior synonym of B. tenella (Jeffreys, 1883) and is  a consuprafamilial (Rissooidea: Rissoidae:  Rissoinae) marine snail from deep water.

Heard, R.W., R.H. Overstreet, and J.M. Foster, 2002. Hydrobiid snails (Mollusca: Rissooidea) from St. Andrews Bay, Florida. Gulf and Caribbean Research 14: 13-34. <https://www.biodiversitylibrary.org/page/52838778>

Vokes, H.E. and E.H. Vokes, "1983" [1984].  Distribution of shallow-water marine Mollusca, Yucatan Peninsula, Mexico. Mesoamerican Ecological Institute, Monograph 1, Middle American Research Institute, Publication 54: i-viii + 1-183, incl. 50 full page B&W plates.