Biomphalaria havanensis

Biomphalaria havanensis, common name the ghost rams-horn, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

Ghost rams-horn
apical and apertural view of the shell of Biomphalaria havanensis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Superorder:	Hygrophila
Family:	Planorbidae
Genus:	Biomphalaria
Species:	B. havanensis
Binomial name
Biomphalaria havanensis (L. Pfeiffer, 1839)

The shell of this species, like all planorbids is sinistral in coiling, but is carried upside down and thus appears to be dextral.

Distribution

Biomphalaria havanensis is a Neotropical species.

Distribution of Biomphalaria havanensis include:

• Cuba^[1]

It was found as a native transplant in:

• pond near Snake River in Twin Falls County, Idaho in 1991.^[2]
• Guadalupe River, Kerr County, Texas^[3]

Phylogeny

A cladogram showing phylogenic relations of species in the genus Biomphalaria:^[4]

Biomphalaria

Biomphalaria stanleyi Biomphalaria pfeifferi Biomphalaria camerunensis Nilotic species complex Biomphalaria sudanica Biomphalaria choanomphala Biomphalaria alexandrina Biomphalaria smithi Biomphalaria glabrata Biomphalaria straminea complex Biomphalaria kuhniana Biomphalaria straminea Biomphalaria straminea Biomphalaria intermedia Biomphalaria amazonica Biomphalaria sp. Biomphalaria tenagophila Biomphalaria occidentalis Biomphalaria prona Biomphalaria andecola Biomphalaria sp. (? Biomphalaria havanensis) Biomphalaria sp. (? Biomphalaria havanensis) Biomphalaria temascalensis Biomphalaria obstructa Biomphalaria helophila Biomphalaria peregrina Biomphalaria schrammi