Glossy Glass Snail - Oxychilus navarricus

Alternative names
Oxychilus helveticus
Description

A medium-sized (8 to 10 mm) glossy brown snail with a slightly raised spire, 5 flattened whorls and with sutures slightly deeper than those of O. cellarius. The body is blue-grey with jet-black mantle edge - that can be seen as a dark band at the front edge of the shell. Sometimes emits a faint garlic smell when disturbed but not as strongly as the smaller Garlic Snail.

Similar Species

O. alliarius (Garlic Snail) is smaller: 6-8mm but also has a slightly raised spire.

O. cellarius can be a little larger but overlaps in size, however it is very flat and lacks the slightly raised spire and the black mantle.

Aegopinella nitidula is a similar size and shape. This is more expanded whorls and has striations on the shell. See ID aids.

Identification difficulty
ID guidance
  • the black mantle is visible through the transparent shell as a dark band just above the mouth
  • glossy brown
  • a slightly raised spire
Identification aids

Aegopinella nitidula (left) has striations visible on the shell. Oxychilus navarricus (right) has a much smoother shell.

The black band above the shell mouth is also much more pronounced on Oxychilus navarricus.

snails

Recording advice

Unless identified by a recognised expert, a photo is required. An image should show the black mantle and in the comments box describe the size and identifying characters you have observed.

Habitat

Associated with woodland but also rubbish strewn sites on roadsides and in quarries, occasionally in gardens.

When to see it

All year round.

UK Status

Widespread but not especially common in much of England, and Wales, but its numbers seem to be increasing of late.

VC55 Status

Occasional in Leicestershire and Rutland, but probably increasing.

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map