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TaxonomyBrowse
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Species Polydrusus formosus - Green Immigrant Leaf Weevil

Weevil - Polydrusus formosus weevil - Polydrusus formosus Pale Green Weevil - Polydrusus formosus Green Immigrant Leaf Weevil - Polydrusus formosus Polydrusus N2 - Polydrusus formosus Beetle - Polydrusus formosus Polydrusus formosus 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
5.5-7 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 TBA(2)(BG data)
Food
primarily Yellow Birch (Betula alleghaniensis)
See Also
P. impressifrons is similarly colored but 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 of both species)
Internet References
adult image compared to similar species [of the others, only impressifrons occurs in NA] (Claude Schott)