Donacia bicolora Zschach, 1788

Taxonomy: Polyphaga > Chrysomeloidea > Chrysomelidae > Donacia > Donacia bicolora

Images

Donacia bicolora
Donacia bicolora
Donacia bicolora

Description

Size: 8-10.2mm
Basic colour: Bright greenish gold, sometimes (in later summer) greenish-blue to deep purple-blue.
Pattern colour: None
Number of spots: None
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Donacia marginata
, Confusion species: Donacia obscura

Palaearctic.

Biology

Status: Widely scattered in southern England and Northern Ireland (especially around the Fermanagh lakes), a few records from Wales, none from Scotland. Vulnerable (RDB2)
RDB Category: Vulnerable (RDB2)
UKBAP Species: Yes
Habitat: By water, usually but not always flowing.
Host plant: Branched bur-reed (Sparganium erectum), larvae and cocoons from rhizomes and roots, respectively, of common club-rush (Schoenoplectus lacustris).
Overwintering: Unknown
Food: Adults on leaves, larvae on rhizomes.

Distribution (may take a minute to appear)