Sphaeroderma rubidum (Graëlls, 1858)

Taxonomy: Polyphaga > Chrysomeloidea > Chrysomelidae > Sphaeroderma > Sphaeroderma rubidum


Size: 2.3-3.1mm
Basic colour: Pale rusty- or orange-red
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Sphaeroderma testaceum

Western Palaearctic, including Macaronesia and North Africa.


Status: Widespread and common, except central & northern Scotland
Habitat: Various
Host plant: Various Asteraceae; sometimes on trees.
Overwintering: As larvae (in soil at about 3cm depth), occasionally (but not usually) as adults in moss and grass tussocks.
Food: Adults on leaves (mainly knapweeds, Centaurea spp.); early-instar larvae mine primary & secondary leaf-veins, later-instar larvae feed on the entire leaf tissue between the upper & lower epidermis. Larvae may be able to develop in the flowers of globe artichokes (Cynara cardunculus).
Other notes: Almost circular from above. Front angles of pronotum not prominent. Pronotal punctures very fine, sometimes appearing almost absent. Hibernating larvae and spring pupae predated by several carabid beetle species.

Distribution (may take a minute to appear)