Author Archives: Robert Forsyth

NWT snails 1

Cochlicopa lubrica & Pupilla hudsoniana

Cochlicopa lubrica (left) and Pupilla hudsoniana.

This post begins a series that will cover the land snails of the Northwest Territories, Canada.

Cochlicopa lubrica. Waiting for the rest of the group to finish, and scratching around in the hope to find something, I found this specimen, one of several, around the roots at the base of a tuft of grasses, in a grassy/sedgy swale parallel to the Fort Smith Hwy 5 but also on the highway’s shoulder.

Pupilla hudsoniana. Among the small pupilloids in the NWT is P. hudsoniana. Until recently, this species has been called Pupilla hebes (e.g., Forsyth 2004), and before that P. muscorum of some authors.  A calciphicole (or calciphile), this species is probably common along the Hay River. This specimen was from a dry slope in leaf litter and broken limestone along the river.


Hay River near Alexandra Falls, NWT.

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.