Lilioceris merdigera is a species of beetle belonging to the family Chrysomelidae, subfamily Criocerinae.

This species can be found in most Europe (especially in Czech Republic, France, Germany, Italy, Luxembourg, Russia, and Slovakia) and in the eastern Palearctic realm (China, Japan, and Taiwan).

[3] The larvae are typically covered by blackish mucilaginous substances mixed with their own faeces, that seem to have a protective function.

The specific epithet merdigera derives from its habit, from Latin merda (dung) and gero (to carry).

[4] Both the adults and the larvae feed on the leaves, buds, stems and flowers of several plants, mainly Liliaceae, Alliaceae and Asparagaceae species, for instance Turk's cap lily (Lilium martagon), onion (Allium cepa),[3] garlic (Allium sativum), Asparagus, Polygonum and Convallaria species.