Plant Parasites of Europe

leafminers, galls and fungi

Eucosma cana

Eucosma cana (Haworth, 1811)

hoary bell

on Carduus, Cirsium

parasite

Eggs are deposited one by one at the outside of a still closed flower head. The larva works itself inside from the top, then feeds on the developing achenes. The late larve makes a frass filled tunnel in the receptacle, then leaves the head.

host plants

Asteraceae, oligophagous

Carduus; Cirsium vulgare.

Occasionally Centaurea nigra.

phenology

The larva hibernates in the soil in a cocoon made out of silk and dirt, and pupates in the spring.

distribution within Europe

(PESI, 2019).

larva

Body brownish yellow; head, prothoracic and anal plates and thoracic feet brownish black; see Swatschek.

pupa

See Patočka & Turčáni.

synonyms

Epiblema cana.

references

Bland & Rotheray (1994b), Bradley, Tremewan & Smith (1979a), Disqué (1905a), Hancock & Bland (2015b), Patočka & Turčáni (2005a), Redfern (1986a), Swatschek (1958a), Vives Moreno & Gastón (2017a).

Last modified 15.i.2020