Ancotrema sportella (Gould 1846) Beaded Lancetooth

Haplotrematidae, ,Gastropoda, Mollusca, Animalia


Identification: Shell up to 2.5 mm diameter, 1.1 mm high, with about 4 whorls; spire nearly flat; umbilicus completely closed; animal white.

Description: Shell with 5 to 6.5 whorls; umbilicus 25 to 30% of shell diameter; color pale greenish-yellow.

Natural History: A predator of other snails and slugs. Occurs in forested habitats throughout western Washington. Commonly found under woody debris; from sea level to at least 1200 m.

Conservation Status:

Literature Cited:


Etymology: Anco trema – elbow hole; sportella – little basket