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Genus Otiorhynchus

Weevil - Otiorhynchus ovatus Black Vine Weevil - Otiorhynchus sulcatus Beetle - Otiorhynchus sulcatus Curculionidae, Black Vine Weevil, lateral - Otiorhynchus sulcatus weevil suspect - Otiorhynchus ligneus Black Vine Weevil? - Otiorhynchus sulcatus Otiorhynchus ovatus ? - Otiorhynchus ovatus Otiorhyncus ovatus - Otiorhynchus ovatus
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
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)
4-11 mm
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.
native to the Palaearctic, adventive but widely established in NA north to AK, NWT
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)
adults often spend colder months in homes and can be crawling around virtually anytime
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)