Macrostoma

The genus name Macrostoma may refer to:

Animalia:
- Macrostoma Latreille, 1825 (Mollusca)
- Macrostoma Risso, 1827 (Myctophiformes, Myctophidae)
- Macrostoma Swinderen, 1822 (Diptera, Syrphidae) = synonym of Volucella Geoffroy, 1762
- Macrostoma Ørsted, 1843 (Platyhelminthes, Macrostomidae) = synonym of Macrostomum Schmidt, 1848
- Macrostoma Agassiz, 1839 (Chordata)

Plantae:
- Macrostoma Hedwig, 1806 = Macrostemma Pers. (Convolvulaceae)
- Macrostoma Griff. 1836 = Christensenia Maxon 1905 (Pteridophyta, Marattiaceae)

Protozoa:
- Macrostoma Alexeieff, 1909 = Chilomastix Aléxéieff, 1910 (Trichozoa, Retortamonadidae)

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