Monodilepas otagoensis is a species of small sea snail, a keyhole limpet, a subspecies of marine gastropod mollusc in the family Fissurellidae, the keyhole limpets and slit limpets.

[2] This species has only been found in New Zealand.

[3] Monodilepas otagoensis was originally discovered and described by Harold John Finlay in 1930.

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