Monodilepas diemenensis is species of small sea snail, a keyhole limpet, a marine gastropod mollusc in the family Fissurellidae, the keyhole limpets and slit limpets.
This species is found at North Island, New Zealand.
Monodilepas diemenensis was originally discovered and described by Harold John Finlay in 1930. Finlay's original text (the type description) reads as follows:
This article incorporates public domain text coming from New Zealand from the reference.[1]