
Community identification
Flatworm (possibly land planarian)
Geoplanidae (family)
- Order & Family
- Order: Tricladida; Family: Geoplanidae
- Size
- Highly variable; can be from a few millimeters to several centimeters long (approx. 5-100mm depending on species).
Natural Habitat
Damp, cool environments like under rocks, logs, and leaf litter; also found in gardens and greenhouses.
Diet & Feeding
Carnivorous and predatory; they eat earthworms, snails, slugs, and other small invertebrates.
Behavior Patterns
Nocturnal; they move by gliding on a film of mucus using tiny hairs (cilia). They are hermaphrodites and some can reproduce through fragmentation.
Risks & Benefits
Benefits: Help control invasive snail or slug populations. Risks: Some invasive species (like the Hammerhead Flatworm) can contain neurotoxins (tetrodotoxin) and can significantly harm beneficial earthworm populations. Should not be handled with bare hands.