Invertebrate · GBIF taxon 2294089
Slender Banana Slug
Ariolimax dolichophallusAlso known as Santa Cruz Banana Slug
Slender banana slugs glide methodically across the redwood floor, recycling decomposing plant matter and dispersing vital fungal spores through their digestive tract. Their vibrant yellow coloration acts as a visual deterrent, signaling the presence of sticky, tongue-numbing mucus that repels potential predators. During prolonged dry spells, individuals seal themselves against logs with a layer of dried slime to enter a dormant state known as estivation.
DetritivoreMolluskNocturnal

Licensed reference(c) Linda Tanner, some rights reserved (CC BY) · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Fruiting Fungi
- Decaying Redwood Needles
- Lichens
Predators
- Pacific Garter Snake
- Pacific Giant Salamander
- Raccoon
ThreatsSevere drought, habitat fragmentation, and pedestrian trampling on hiking trails.
HabitatsMoist coastal redwood and Douglas-fir forest floors.
Life span1–5 years
Size / weightNot available
Classification
- OrderStylommatophora
- FamilyAriolimacidae
- GenusAriolimax
- SpeciesAriolimax dolichophallus
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Watch Your Step: Scan forest trails carefully after rainfall, as slugs readily cross exposed dirt paths.
- Do Not Touch: Salts and chemical residues on human skin can rapidly dehydrate and damage their permeable bodies.
Keep collecting in Fauna
Found in Collections
Ecosystem chain Pro
Secret Garden
Slender Banana Slug is found in this collection. Identify it in Fauna to fill this slot and continue your progress.
Unlock to track progress
Help improve the field guideSomething wrong?
Checking your Fauna account…Report a name, category, or profile issue for review.



