Tag Archives: Gastrodontidae

Aegopinella nitidula

Aegopinella nitidula; Queen Elizabeth Park, Vancouver, BC (diameter: 7.2 mm).

Aegopinella nitidula (Draparnaud, 1805) is yet another terrestrial land snail introduced into Canada. This species, which bears some resemblance to the also introduced species of Oxychilus, was first noticed in BC (and North America) by myself and friends around the Vancouver area. Since then, I am unaware of any finds outside of this regions. It would be of interest to learn of additional occurrences anywhere in the region, or beyond. Oddly, no one has yet to find it elsewhere in Canada or the USA.

Further reading:

Forsyth RG, Hutchinson JMC, Reise H (2001) Aegopinella nitidula (Draparnaud, 1805) (Gastropoda: Zonitidae) in British Columbia—first confirmed North American record. American Malacological Bulletin 16: 65–69. PDF here.

The “orange spot” (Zonitoides nitidus) revisted

Black Gloss, Orange Spot

In in earlier post, I mentioned how the black-bodied Zonitoides nitidus (common name: Black Gloss) has an orange-coloured spot that is visible through the translucent shell (although apparently not always that orange but more yellowish). In the photograph I included at the time, this spot was just barely visible if one knows where to look. Here I add another photograph, showing this character much more clearly (and with a giant arrow to point it out).

Zonitoides nitidus. Lundar Beach Provincial Park (E shore of Lake Manitoba), Manitoba.