Family: Haplotrematidae
Common name: Lancetooth snails
Haplotrema vancouverense, robust lancetooth
Origin: Pacific Northwest
Diet: Predators of slugs, snails and other soft bodied invertebrates.
Where in Oregon: Widespread.
Similar exotics to look for: There are three species of lancetooths in Oregon. Another species, Haplotrema concavum, inhabits the eastern US but is small (16-22mm) and has fine spiral striae. The native H. vancouverense has fine spiral striae but is larger (22-32mm). Ancotrema sportella and A. hybridum overlap with H. concavum in size, but have deep spiral striae that that cut through the growth rings and can give the the shell a “beaded” appearance.
Diet: Predators of slugs, snails and other soft bodied invertebrates.
Where in Oregon: Widespread.
Similar exotics to look for: There are three species of lancetooths in Oregon. Another species, Haplotrema concavum, inhabits the eastern US but is small (16-22mm) and has fine spiral striae. The native H. vancouverense has fine spiral striae but is larger (22-32mm). Ancotrema sportella and A. hybridum overlap with H. concavum in size, but have deep spiral striae that that cut through the growth rings and can give the the shell a “beaded” appearance.
Ancotrema sportella, beaded lancetooth
