Taxonomy
- Polyphaga
- Chrysomeloidea
- Chrysomelidae
- Phaedon
- Phaedon concinnus
Description
Size: 3.2-4.1mm
Basic colour: Bright metallic green or greenish blue, sometimes coppery, rarely metallic blue.
Pattern colour: None
Number of spots: None
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Phaedon cochleariae
Basic colour: Bright metallic green or greenish blue, sometimes coppery, rarely metallic blue.
Pattern colour: None
Number of spots: None
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Phaedon cochleariae
Biology
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).
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).
Articles
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(2012), Phaedon concinnus Stephens (Chrysomelidae) in Ireland The Coleopterist 21(3):125
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(2011), Phaedon concinnus Stephens (Chrysomelidae) in Northumberland The Coleopterist 20(2):76