Like a white veil crossing the Saint Martin sky, swarms of butterflies have returned for several weeks now. A spectacle as surprising as it is familiar, which reappears every year when natural conditions favor their proliferation.
Along a roadside, in gardens, or atop rocks, they flutter by the dozens, sometimes by the hundreds. These small white butterflies are primarily Southern Large Whites (Ascia monuste/Piéride du Tapier), a native species locally known as “Saint-Martin Snow”, like a light snow that appears in the landscape.
Nature sets the pace
Their return in large numbers is no coincidence. Present on the island year-round, the species experiences population peaks depending on the season. After a dry summer, recent rains have promoted vegetation regrowthproviding the caterpillars with more food and better survival conditions. As a result, many butterflies emerge and take flight. Their abundance typically peaks in mid-autumn or early winter. The Southern Large White frequents fields, shrubby areas, salt marshes, and coastal dunes. Its caterpillars feed on various wild plantsbut also cultivated vegetables, especially cabbages. Once adults, these butterflies have a relatively short lifespan approximately five days for males and eight to ten days for females. Another species, the Florida White (Appias drusilla), could also be present among these clouds. Very similar, it is difficult to distinguish without careful observation. EphemeraThese gatherings serve as a reminder that The landscape of Saint-Martin evolves with the rhythm of the rains and the vegetationA spectacle of great purity to be enjoyed while respecting insects and their environment.
