Abstract

On the basis of overlap in range of variation, M. arkonensis, M. attenuatus, M. multiplicatus, M. alpenensis, and M. prolificus are placed in synonymy with M. mucronatus and M. profundus, M. intermedia, M. latus, and M. grabaui are placed in synonymy with M. thedfordensis. M. norwoodensis is described as new.

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