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Species Polydrusus formosus - Green Immigrant Leaf Weevil

Weevil - Polydrusus formosus Bug for ID - Polydrusus formosus Green Immigrant Leaf Beetle - Polydrusus formosus Beetle sp. 1 - Polydrusus formosus Green Immigrant Leaf Weevil - Polydrusus formosus Green Immigrant Leaf Weevil - Polydrusus formosus Green Weevil - Polydrusus formosus Beetle - Polydrusus formosus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Entiminae (Broad-nosed Weevils)
Tribe Polydrusini
Genus Polydrusus
Species formosus (Green Immigrant Leaf Weevil)
Synonyms and other taxonomic changes
Polydrusus sericeus Schaller 1783 non Goeze 1777
Explanation of Names
Polydrusus (Chrysoyphis) formosus (Mayer 1779)
Size
5.1-7 mm(1)
Identification
completely covered with metallic green scales except for brownish or yellowish-brown legs and conspicuous black linear grooves in elytra; eyes relatively large, positioned dorsolaterally, and angled slightly inward (i.e. anterior margin of eye is closer to the midline than posterior margin); least interocular distance less than or equal to width of eye; elytra almost parallel-sided, widest near the base
Range
native to Europe (widespread there), adventive in NA, established in the northeast (NS-*SK to *PA-IL) + *UT & BC(2)(1)(3)(*BG data)
Food
primarily Yellow Birch (Betula alleghaniensis)
See Also
P. impressifrons has less conspicuous black lines in elytra, relatively small eyes positioned laterally and parallel to midline, least interocular distance 1.5 to 2 times width of eye, and elytral margins slightly sinuate and widest near apex (compare images)
Works Cited
1.Beetles of Eastern North America
Arthur V. Evans. 2014. Princeton University Press.
2.de Jong Y.S.D.M. (ed.) (2011) Fauna Europaea version 2.4
3.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.