Taxonomy
- Polyphaga
- Chrysomeloidea
- Chrysomelidae
- Galerucella
- Galerucella lineola
Common name
Brown Willow Beetle
Images
Source: Lech Borowiec
Description
Size: 5-6mm
Basic colour: Yellowish, brownish or brick-red
Pattern colour: Dark spot on the top of the head (often entirely dark on top apart from a narrow pale margin), one on pronotum and one on each elytral shuolder
Number of spots: See pattern colour
Pronotoum: See basic/pattern colours above
Leg colour: As basic colour
Basic colour: Yellowish, brownish or brick-red
Pattern colour: Dark spot on the top of the head (often entirely dark on top apart from a narrow pale margin), one on pronotum and one on each elytral shuolder
Number of spots: See pattern colour
Pronotoum: See basic/pattern colours above
Leg colour: As basic colour
Palaearctic
Biology
Status: Widespread and often common
Habitat: Various
Host plant: Alders, hazel, willows, black-poplar and birch
Overwintering: Adults hibernate in sedge tussovks, under bark (on mature willows and dead wood), and in standing umbellifer stems.
Food: Leaves of host trees
Other notes: Larvae predated by heteropteran bugs Anthocoris nemorum (Anthocoridae) and Rhacognathus punctatus (Pentatomidae); several ladybird species (Coccinellidae) feed on eggs and larvae.
Habitat: Various
Host plant: Alders, hazel, willows, black-poplar and birch
Overwintering: Adults hibernate in sedge tussovks, under bark (on mature willows and dead wood), and in standing umbellifer stems.
Food: Leaves of host trees
Other notes: Larvae predated by heteropteran bugs Anthocoris nemorum (Anthocoridae) and Rhacognathus punctatus (Pentatomidae); several ladybird species (Coccinellidae) feed on eggs and larvae.