[Gastropoda general] These are found in pteropods on the acetabuliferous arms- those on the lateral arms are lateral suckers, those on the median arm are median suckers- and used for capturing prey. Sometimes the penis has a suckers, and when this is absent a median footlobe tubercle takes its function.In Heteropoda the wing sometimes has a sucker.

[Pteropoda] Suckers present on the acetabuliferous arms, those on the lateral arms are lateral suckers, those on the median arm are median suckers; used for capturing prey (Pneumodermopsis in ventral view). Sometimes the penis has a sucker, when absent, a median footlobe tubercle takes its function.

Alternative forms for Sucker : lateral sucker, median sucker.