Trioza rotundata Flor, 1861

polyphagous

Trioza rotundata: larva

larva (from Conci & Tamanini, 1987a)

parasite

larvae in shallow pits at underside of the leaves; at the other side a low dimple. Larvae flat, almost circular, surrounded by a circle of radiating wax threads. Young larvae are light ochreous in colour, older are darker, and then very hygrophilous. Univoltine, hibernation as imago in conifers.

hostplants

Restricted polyphagous

Cardamine amara, hirsuta, impatiens, opizii, uliginosa; Nasturtium officinale; Saxifraga aizoides; Stellaria nemorum.

Conci & Tamanini (1987a) suppose that under normal circumstances Cardamine species are the actual host plants.

references

Buhr (1965a), Burckhardt (2002a), Burckhardt & Lauterer (2002a), Conci, Rapisarda & Tamanini (1996a), Conci & Tamanini (1987a, 1991a), Hellrigl (2004a), Seljak (2006a).

mod 10.iv.2018