M. exigua may refer to:
- Madia exigua, a western North American plant
- Meloidogyne exigua, a coffee root-knot nematode
- Micromystix exigua, a snout moth
- Micropyxis exigua, a perennial herb
- Miresa exigua, a slug moth
- Mitromorpha exigua, a sea snail
- Mordellistena exigua, a tumbling flower beetle
- Mycosphaerella exigua, a plant pathogen
- Myrmecia exigua, a bulldog ant
- Myrmica exigua, an ant with a binodal petiole
- Myrmicaria exigua, an ant with an antenna with seven segments
This disambiguation page lists articles associated with the same abbreviated species scientific name.
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