M. planula may refer to a few different species.
, a species of air-breathing land snails in the family Ariophantidae Magosphaera planula, a species of Protozoa in the clade Catallacta Megachile planula, a bee in the family Megachilidae , a bryozoan in the family Cribrilinidae , a species of stilt-legged flies in the family Micropezidae