Friday 12 April 2024

Monster Molluscs You Could See in the Touraine Loire Valley

The Touraine Loire Valley is home to some impressively large land snails and slugs.

This Yellow Cellar Slug Limacus flavus (Fr. Limace des caves) and its family live in our kitchen. They are nocturnal, so we rarely see them. For scale, the tiles are 20 cm².

Yellow Cellar Slug Limacus flavus, Indre et Loire, France. Photo by Loire Valley Time Travel.

I encounter Ash-black Slugs Limax cinereoniger (Fr. Grande limace) in the larger well established forests. They can be pale and stripey like this one...

Ash-black Slug Limax cinereoniger, Indre et Loire, France. Photo by Loire Valley Time Travel.

 ...or they can be charcoal grey with a pale grey dorsal ridge.
Ash-black Slug Limax cinereoniger, Indre et Loire, France. Photo by Loire Valley Time Travel.

Red Slugs Arion rufus (Fr. Grande loche) can be encountered anywhere -- in the forest, on waste ground, in gardens and often on roads, paths and tracks.

Red Slug Arion rufus, Indre et Loire, France. Photo by Loire Valley Time Travel.

The famous edible Roman/Burgundian Snail Helix pomatia (Fr. Escargot de Bourgogne) occurs in isolated small populations on sites that don't get much human disturbance or are managed with a light touch. They like semi-natural parks or woodland edges. A significant number are white...
Roman/Burgundian Snail Helix pomatia, Loir et Cher, France. Photo by Loire Valley Time Travel.
 
...but most are brown.
Roman/Burgundian Snail Helix pomatia, Indre et Loire, France. Photo by Loire Valley Time Travel.

A Turkish Snail Helix lucorum (Fr. Escargot turc) with a friend's hand for scale. Under the hand is a Glow-worm Lampyria noctiluca (Fr. Lampyre) larva. They prey on snails by injecting them with toxin then waiting for them to die, so this snail may already be doomed.

Turkish Snail Helix lucorum and Glow-worm Lampyria noctiluca larva, with human hand for scale, Indre et Loire, France. Photo by Loire Valley Time Travel.

2 comments:

Le Pré de la Forge said...

Glowworm larvae.... correction....they don't wait for them to die, they wait for the toxin to dissolve the immediate area... and then go in and drink.... also, the larger snails [like your big Turkish delight] can actually survive.
The first effect of the toxin is to relax the snail.... but a large snail on our doorstep moved four inches in two days whilst being fed on by two larvae... fell off the step, into thick vegetation.... looked dead, left it there for the larvae, but it must've begun to recover, because it had moved back up towards the top of the step and no sign of the larvae....

Susan said...

Tim: Thanks as ever for the extra information.

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