Status: Widespread
Habitat: Various
Host plant: Usually brooms (Cytisus), sometimes Dyer's Greenweed (Genista tinctoria), Laburnum, Gorse or Lupins. On Lundy, also Lundy Cabbage (Coincya wrightii).
Overwintering: May live for two years.
Food: Leaves and stems of host plants (only the leaves of Lundy Cabbage).
Other notes: Scutellum usually dark, but may be pale in otherwise paler/less heavily marked specimens. Unmarked specimens may require examination of genitalia to separate them from G. pallida. The aedeagal tip of G. olivacea is asymmetrical in dorsal view and sharp/somewhat hooked in lateral view. In G. pallida, it is blunt, unhooked and symmetrical.

Status: Widespread, especially in southern England.
Habitat: Broad-leaved woodland, parkland, commons, moors.
Host plant: Usually willows and poplars, rarely other trees.
Overwintering: Adults overwinter though location unknown.
Food: Underside of leaves of host plants.
Other notes: Similar to G. decemnotata, but head entirely black, legs black or dark brown.

Status: Scarce (Notable B); widely scattered, mainly in central and southern England.
Habitat: Glades and rides in broad-leaved woods, fields bordering woods, commons.
Host plant: Aspen (Populus termula), sometimes other trees.
Overwintering: Adults probabl yoverwinter, but details unknown.
Food: Leaves of host plants
Other notes: Similar to G. viminalis but head not entirely black (clypeus and labrum yellowish to reddish-brown), legs also yellowish to reddish-brown.

Status: Common and widespread.
Habitat: Various
Host plant: Various Apiaceae such as cow parsley
Overwintering: Larvae overwinter from late September to April.
Food: Leaves of host plants (adults may also feed on pollen).
Other notes: Separated from other Phaedon species by the much finer punctures on the pronotal disc.

Status: Scarce (Notable B)
Habitat: Various coastal habitats.
Host plant: Sea Plantain (Plantago maritima) and Sea Arrowgrass (Triglochin maritimum).
Overwintering: Adults overwinter though location unknown.
Food: Leaves of host plants.
Other notes: The rare metallic blue form can be confused with P. cochleariae. However, in P. concinnus, the antennae are entirely black; in P. cochleariae, the underside of the 2nd & 3rd antennal segments are reddish (or at least with a reddish spot).