Insects Database
 Insects and other Arthropoda
 Beetles
 Leaf beetle
 Alder leaf beetle
 Altica aenescens
 Brassy willow beetle
 Brown Mint Leaf Beetle
 Case-bearing Leaf BeetlesPics
 Cereal leaf beetle
 Cereal leaf beetle
 Chrysolina oricalcia
 Chrysolina sanguinolenta
 Green Dock Beetle
 Hispella testacea
 Knotgrass Leaf Beetle
 Mallow flea beetle
 Mint Leaf Beetle
 PsylliodesPics
 Scarlet lily beetle
 Willow flea beetle
 Species overview
 Pictures

 AntsPics
 ArachnidsPics
 BeesPics
 BeetlesPics
 Booklice - BarkfliesPics
 BugsPics
 BumblebeesPics
 CicadasPics
 Crane fliesPics
 DragonfliesPics
 EarwigsPics
 FliesPics
 IsopodsPics
 LocustsPics
 MayfliesPics
 MecopteraPics
 MosquitoesPics
 Moths & ButterfliesPics
 MyriapodsPics
 Net-winged insectsPics
 Plant-parasitic HemipteransPics
 Praying MantisesPics
 TermitesPics
 WaspsPics
Knotgrass Leaf Beetle - Chrysolina polita
Knotgrass Leaf Beetle - Chrysolina polita


Knotgrass Leaf Beetle
The Knotgrass Leaf Beetle (Chrysolina Polita) in the order beetles (Coleoptera), suborder Polyphaga, infraorder Cucujiiformia, the superfamily Chrysomeloidea and the family leaf beetles (Chrysomelidae), belongs to the subfamily Chrysomelinae and the genus Chrysolina. It is also known as Melasoma Polita and Chrysomela Polita. In older sources this genus was referred to as "Melasoma" and as "Chrysomela" in some countries. Chrysolina Polita are found throughout the Palearctic and are commonly encountered from Europe to Central Asia. .
Chrysolina polita
Chrysolina polita
Adults can reach body lengths of 6.5 to 8.5 mm. They are oval in shape and domed. Most parts of the body are a shiny dark metallic blue colour , with green or brass-like tones. Their forewings (elytra ) are reddish-brown and (when closed) show an approximately equilateral triangle at the upperside. The elytra are coarse to finely covered in small holes. Depending on light conditions, the head and scutellum appear black, dark blue or bronze-green in colour.
Chrysolina polita - Leaf beetle
Chrysolina polita - Leaf beetle
Because of their appearance, Chrysolina Polita can be confused with poplar leaf beetles (Chrysomela populi). Chrysolina Polita are encountered from March to October in different habitats, up to subalpine altitiudes. . Both the adult beetles and the larvae feed on the leaves of various plants, such as mint (water mint, cat mint), sage, or oregano.
Mating occurs from April on. Egg laying takes place a few days later, on the food plants of the larvae. More than a hundred eggs ( in separate groups of 20 or more) may be stored on the underside of leaves. After about one week the larvae hatch. The rear body of the larvae is beige or tan in colour. . Their heads, chests and three atrophied pairs of legs, are dark brown to black. They mature rapidly and in the last larval stage (about two to three weeks after hatching from the eggs) they pupate on the food plants One week later the beetles are fully developed and leave the cocoon. They overwinter in the soil as adults.

Chrysolina (Erythrochrysa) polita
Subspecies2
Common namesKnotgrass Leaf Beetle
German namesGeglätteter Fallkäfer, Geglätteter Blattkäfer
Dutch namesMoertje
Danish namesForskelligfarvet guldbille
Finnish namesMinttukuoriainen
AuthorCarl von Linné (Carl Nilsson Linnæus), 1758
Distribution
Continents:

Eurasia
Europe
North Europe (Baltic region (Baltic States (Estonia, Latvia)), 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 (Åland Islands))), Central Europe (Czech Republic (Moravia, Bohemia), Slovakia, Hungary, Poland), West Europe (Austria, France, Switzerland, Benelux (Belgium, Netherlands, Luxembourg)), South Europe (Italy (Italy Islands (Sicily, Sardinia), North Italy, South Italy)), Southeast Europe (Romania, Yugoslavia (Slovenia, Croatia, Serbia and Montenegro (Serbia)), Bulgaria, Greece)
Caucasus
Georgia
Russia


Ecozones: Palaearctic

CountriesAustria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Georgia, Germany, Greece, Hungary, Ireland, Italy, Latvia, Luxembourg, Netherlands, Norway, Poland, Romania, Russia, Serbia, Slovakia, Slovenia, Sweden, Switzerland, United Kingdom
Links and ReferencesChrysolina polita in dyntaxa.se

Description of images / photos
Photography with Cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
1. Knotgrass Leaf Beetle - Chrysolina polita
2. Chrysolina polita
3. Chrysolina polita - Leaf beetle
Quick search: Leaf - Beetle - Chrysolina - Knotgrass - Green - Beetles
Chrysomela - Blue - Cocoon - Dock - Grass - Bronze - Larvae - Eat
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
TribeGonioctenini
SubtribeChrysolinina
GenusChrysolina
SubgenusErythrochrysa
Speciespolita
Chrysolina polita
Knotgrass Leaf Beetle
AuthorLinnaeus, 1758
 
Synonyms
Chrysomela polita
 
Subspecies
Chrysolina polita adamsi
Chrysolina polita polita
 Species overview
 Pictures

Keywords
ABCDEFGHIJKLM
NOPQRSTUVWXYZ
German Flag Geglätteter Blattk&au ...
 Arthropoda (Database)
 Contact
 Copyrights
 Distribution Tree
 Glossary
 Imprint
 New pictures
 Taxonomy Tree
 Unknown insects
 Unknown spiders


New chapters:
Egyptian Locust
Bird grasshoppers
Spanish bee
Kalotermes flavicollis
Termites
Stiletto flies
Chrysomya albiceps
Toadfly
Green blowfly
Sphaerophoria rueppelli
White-banded Digger Bee
House mosquito
Discrete Chaperon
Convolvulus Hawk-moth
Villa hottentotta
Eumenes mediterraneus
Andrena morio
Giant Furrow-Bee
Dull-headed Blood-bee
Halictinae


Frequent Queries:
Chrysolina polita (4)
mint leaf beetle (4)
knotgrass leaf beetle (4)
chrysolina polita food (2)
bronze cocoon on dock leaf (1)
mint leaf beetle blue (1)
Chrysomela Mint Leaf Beetle (1)
what do knotgrass caterpillars eat (1)
green and bronze leaf beetle (1)
picture of mint leaf beetle (1)