Sciopithes obscurus
| Obscure root weevil | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Suborder: | Polyphaga |
| Infraorder: | Cucujiformia |
| Family: | Curculionidae |
| Genus: | Sciopithes |
| Species: | S. obscurus
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| Binomial name | |
| Sciopithes obscurus Horn, 1876
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| Synonyms[1] | |
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Sciopithes obscurus, the Obscure root weevil, is a species of broad-nosed weevil in the beetle family Curculionidae, found in the Pacific Northwest of North America.
Description
[edit]They are 6 to 8 millimetres (0.24 to 0.31 in) long, and gray or brown, with a wavy line across their back.[2] They are cylindrical in shape, with a short snout and elbowed antennae near the tip of the snout, in front of the eyes.[3]
Feeding
[edit]They are nocturnal, on feed on plant foliage on night. Unlike other species of weevil, they sometimes remain in the foliage during the day, rather than climbing down to the soil. They are considered a pest in the Pacific Northwest,[2][4] particularly on rhododendrons and strawberries.[3]
Life cycle
[edit]Females lay up to a hundred eggs, either in the folds of leaves,[4][3] or in the soil.[2] There is one generation per year, and upon hatching, the larvae immediately crawl into the soil and begin feeding on roots.[2]
References
[edit]- ^ "Sciopithes obscurus Report". Integrated Taxonomic Information System. Retrieved 2018-04-23.
- ^ a b c d "Blueberry-Obscure root weevil". Pacific Northwest Pest Management Handbooks. Retrieved May 23, 2025.
- ^ a b c "Obscure root weevil". PestWeb. Retrieved May 23, 2025.
- ^ a b "Obscure Root Weevil". Oregon State University College of Agricultural Sciences. Oregon State University. Retrieved May 23, 2025.
Further reading
[edit]- Lobl, I.; Smetana, A., eds. (2013). Catalogue of Palaearctic Coleoptera, Volume 7: Curculionoidea I. Apollo Books. ISBN 978-90-04-26093-1.
- Lobl, I.; Smetana, A., eds. (2013). Catalogue of Palaearctic Coleoptera, Volume 8: Curculionoidea II. Apollo Books. ISBN 978-90-04-25916-4.