Species Polydrusus formosus - Green Immigrant Leaf Weevil

Classification · Synonyms and other taxonomic changes · Explanation of Names · Size · Identification · Range · Food · See Also · Works Cited

Curculionidae: Polydrusus sp. - Polydrusus formosus

Metallic green snout beetle - Polydrusus formosus

Pokydeusus formosus (green immigrant leaf weevil) - Polydrusus formosus

Green Immigrant Leaf Weevil, dorsal - 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. et al. (2014) Fauna Europaea - all European animal species on the web. Biodiversity Data Journal 2: e4034.

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.

Contributed by Robin McLeod on 19 October, 2005 - 10:59pm
Additional contributions by Bbarnd, Mike Quinn, v belov, Harsi S. Parker
Last updated 11 March, 2017 - 7:19pm

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