[2] The life cycle of Ascidae consists of the stages egg, larva, protonymph, deutonymph and adult.

[3] Ascidae include epedaphic species that hunt on the soil surface in the litter layer.

Though mostly terrestrial, some ascids live on wet plants and detritus and on the water surface of marginal freshwater habitats.

These walk about on the surface film and feed on the floating egg masses of nematocerous flies such as mosquitoes.

On the other hand, the most speciose genus, Asca, has the most species in the Neotropical and Oriental regions.