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TaxonomyBrowse
Info
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Genus Otiorhynchus

Is This Suborder Adephaga? - Otiorhynchus sulcatus another weevil - Otiorhynchus rugosostriatus Otiorhynchus sulcatus (Black Vine Weevil)? - Otiorhynchus sulcatus - female Weevil - Otiorhynchus sulcatus interesting curculionid - Otiorhynchus ovatus weevil 4 - Otiorhynchus rugosostriatus Entiminae? - Otiorhynchus meridionalis Otiorhynchus ligustici
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 Otiorhynchini
Genus Otiorhynchus
Explanation of Names
Otiorhynchus Germar 1822
Numbers
14 spp. in our area (all adventive), of which 11 in Canada; immense genus, ~1,500 spp. in at least 105 subgenera(1)(2)(Hlaváč 2011)
Size
4-11 mm
Identification
snout stout, squarish, widened toward tip; pronotum roundish with pebbled or bumpy surface; elytra color varies from light yellowish-brown to black, surface variously sculptured, rarely smooth; flightless (hind wings absent)
For hi-res images of most of our spp., see(3)(4)(5)

Key to our species in Warner & Negley 1976.
Range
native to the Palaearctic, adventive but widely established in NA north to AK, NWT
Habitat
usually on or near host plant; adults can be present in large numbers in gardens and around the houses and other buildings, and sometimes move inside(6) (e.g., seeking winter shelter)
Season
adults often spend colder months in homes and can be crawling around virtually anytime
Food
larvae and adults are polyphagous herbivores(1)
Life Cycle
one generation per year; overwinters as a larva in soil, or adult in leaf litter (or in homes)
most of NA populations are female-only (parthenogenetic) -- except for O. ligneus, O. meridionalis, & O. porcatus-- although in Europe males of all species are known(7)