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Species Polydrusus formosus - Green Immigrant Leaf Weevil

Snout Beetle - Polydrusus formosus Weevils in copulo - Polydrusus formosus - male - female Weevil - Polydrusus formosus Green Immigrant Leaf Weevil? - Polydrusus formosus Small Turquoise Beetle - Polydrusus formosus Polydrusus sericeus - Polydrusus formosus Snout and Bark Beetle - Polydrusus formosus Metallic Green Weevil - 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)
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
5-7 mm
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
n. of ND to MA, also UT(?) (BG data)
introduced from Europe, where it is widespread
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)