Cassida stigmatica · bergždyninis skydinukas

DE · Rainfarn-Schildkäfer PL · tarczyk naznaczony

The monophagous Cassida stigmatica lives on tansy (Tanacetum vulgare), some say oligophagous also on Achillea, Artemisia. The adult beetles appear in late April to early May, when the host plants have developed their first rosettes. After mating, the females lay their eggs on the undersides of the leaves of the host plant. The larvae of the species carry no faeces shield, but only the stripped skins of the previous larval stages. Pupation takes place on the host plant. The new generation appears from late June to July.