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Brassy willow beetle - Phratora vitellinae
Brassy willow beetle - Phratora vitellinae


Brassy willow beetle
The brassy willow beetle (Phratora vitellinae) belongs to the order beetles (Coleoptera), suborder Polyphaga, infraorder Cucujiiformia, superfamily Chrysomeloidea, family leaf beetles (Chrysomelidae), subfamily Chrysomelinae, tribe Phratorini and the genus Phratora. Scientific synonyms include: Phyllodecta vitellinae and Pharatora vitellinae. The brassy willow beetle is commonly encountered throughout Europe.
Phratora vitellinae - Rear view
Phratora vitellinae - Rear view
Adults can reach body lengths of 3-5 mm. Their elongated, domed, dark bodies have a strong metallic sheen, which is bronze, copper, blue, dark green and (more rarely) black in colour. The metallic blue-green to blue or black forewings (elytra ) have clearly visible dots, which run in multiple rows lengthwise. The head, scutellum and legs are a similar colour to the body but diffusely spotted have a scattering of dots. At the rear end of the body is a defensive gland, whose secretions determ both macrophages and enemies as also have disinfecting effects.
Brassy willow beetle - Front view
Brassy willow beetle - Front view
The brassy willow beetle is active from May to September. It mainly feeds on the leaves of poplars and willow trees. The females lay their eggs on the food plants of the larvae, which are the same as those of the adult beetles.
Group of Brassy willow beetles
Group of Brassy willow beetles
The larvae’sbodies appear oval and conical during the early stages of development. They are whitish yellow-orange in colour, have brown heads, and are covered in numerous bristles. There is a pair of bristles on both the middle of the neck and scutellum. On the upper side of the abdomen, a yellowish-red midline is visible. It runs across all segments. Next to it (on each segment) is one pair of brown bristles. There is a dark-brown dot on both edges of each segment. . The outer sides of the abdomen also have some bristles and there are more at the end of the abdomen.
Phratora vitellinae - Brassy willow beetles
Phratora vitellinae - Brassy willow beetles
In the late larval stage, their bodies appear elongated and tapered in shape. They are beige in colour and darker than previously. Their heads are shiny dark brown and black and their back plates, reddish brown or dark brown in colour.
Each segment of the abdomen has dark brown bumps and dark brown bristles at the edges and in the middle. Their glands are dark brown and without hair. Their legs (3 pairs) are glossy dark brown to black. A few weeks after hatching, the larvae pupate on their food plants. One to two weeks later, the new generation of beetles hatch. Brassy willow beetles overwinter in the soil as adults.

Phratora (Phratora) vitellinae
Common namesBrassy leaf beetle, Brassy willow beetle
German namesGrüner Weidenkäfer, Metallischer Weidenblattkäfer, Kleiner Weidenblattkäfer
Danish namesGulgrøn pilebladbille
Finnish namesPajunviherkaivertaja
Norwegian namesPilebladbille
AuthorCarl von Linné (Carl Nilsson Linnæus), 1758
Distribution
Continents:

Eurasia
Europe
North Europe (British Isles (United Kingdom (Great Britain (England (English Midlands (East Midlands (Leicestershire))))), Ireland), Germany (West Germany (North Rhine-Westphalia)), Scandinavia (Norway, Sweden, Denmark), Fennoscandia (Finland), Baltic region (Baltic States (Estonia, Latvia, Lithuania))), West Europe (Austria, France, Switzerland, Benelux (Belgium, Netherlands, Luxembourg), Liechtenstein), South Europe (Italy (North Italy, South Italy)), Central Europe (Hungary, Poland, Czech Republic (Moravia, Bohemia), Slovakia), Southeast Europe (Romania, Yugoslavia (Slovenia, Croatia)), East Europe (Ukraine)
Asia
Far East (East Asia (Mongolia))
Russia


Ecozones: Palaearctic

CountriesAustria, Belgium, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Mongolia, Netherlands, Norway, Poland, Romania, Russia, Slovakia, Slovenia, Sweden, Switzerland, Ukraine, United Kingdom
Links and ReferencesPhratora vitellinae in dyntaxa.se
Phratora vitellinae in Wikipedia (English)

Description of images / photos
Photography with Cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
1. Brassy willow beetle - Phratora vitellinae
2. Phratora vitellinae - Rear view
3. Brassy willow beetle - Front view
4. Group of Brassy willow beetles
5. Phratora vitellinae - Brassy willow beetles
Quick search: Beetle - Willow - Brassy - Phratora - Leaf - Beetles
Brown - Black - Blue - Bronze - Green - Body - Larvae - Eggs
Taxonomy
ClassInsecta
Insects, True insects
SubclassPterygota
Winged insects
InfraclassNeoptera
Wing-folding insects
SuperorderHolometabola
Holometabolous Insects
OrderColeoptera
Beetles, Coleopterans
SuborderPolyphaga
Polyphags
InfraorderCucujiformia
SuperfamilyChrysomeloidea
Leaf Beetles, Wasp Beetles, Longhorn Beetles, Bark Runner, Long-horned Beetles
FamilyChrysomelidae
Leaf beetles, Leaf and Seed Beetles, Casebearers, Rootworms, Seed and leaf beetles
SubfamilyChrysomelinae
Broad-shouldered leaf beetles
TribeChrysomelini
SubtribeChrysomelina
GenusPhratora
SubgenusPhratora
Speciesvitellinae
Phratora vitellinae
Brassy leaf beetle, Brassy willow beetle
AuthorLinnaeus, 1758
 
Synonyms
Chrysomela vitellinae
Phratora angusticollis
Phratora latipennis
Phyllodecta vitellinae
 Species overview
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Keywords
ABCDEFGHIJKLM
NOPQRSTUVWXYZ
German Flag Kleiner Weidenblattkäfer
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