Caudal mucous pit
An incorrect and yet often-used term for this structure is the "caudal gland". This area also used to be referred to by the term "caudal pore".
Families of snails and slug where a caudal mucous pit exists in every species included:
- Daudebardiinae (a subfamily of Oxychilidae)
- Systrophiidae (Systrophiidae is a synonym for Scolodontinae, the subfamily of family Scolodontidae)
Families/subfamilies where is caudal mucous pit exists only on some species included:
- Ariopeltinae (a subfamily of Oopeltidae)
- Ariolimacinae (a subfamily of Ariolimacidae)
- Vitreinae (Vitreinae is a synonym for Pristilomatidae)
- Muratov I. V. (1999) "Analysis of the phylogenetic relationships and their systematic implications in the Limacoinei (=Zonitinia) infraorder (Gastropoda, Pulmonata, Geophila)". Ruthenica 9: 5-26.