Some preliminary results of a morphometric multivariate analysis of the Trichia (Pulmonata: Helicidae) species groups in Britain

Abstract

Trichia is a genus of pulmonate land snails that has presented problems of species discrimination. Three species are currently recognized in Britain but the multivariate morphometric analysis used here allows the recognition of five morphological groups in Central and Southern England and, contrary to the work of Forcart, fails to distinguish between British and Swedish T. hispida.