[7][8] Young caterpillars live inside of folded leaves or beneath silken networks, and build portable or semi-portable cases out of silk, frass, and plant material as they grow.

[9] Mimallonidae larvae feed on several families of plants, including (but not limited to): Anacardiaceae, Clusiaceae, Combretaceae, Fagaceae, Melastomataceae, Myrtaceae and Rubiaceae.

[4][10] Research at the Area de Conservación, Guanacaste, Costa Rica has resulted in the rearing of many species of Mimallonidae, including some from several additional families of plants.

[5][11][12] Other phylogenetic studies of all major Lepidoptera lineages support the placement of Mimallonidae as sister to all Macroheterocera, but within the broader clade Obtectomera.

[4][14] Using molecular phylogenetics, specifically with the technique of anchored hybrid enrichment, the family was reorganized based on the recognition and naming of robustly supported clades, which were further strengthened with morphological apomorphies.

[18][19][20] Aceclostria mus has been evaluated as a potential control agent of the Brazilian pepper tree (Schinus terebinthifolius) in the United States.