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Species Cryptorhynchus lapathi - Poplar-and-Willow Borer

poplar and willow borer - Cryptorhynchus lapathi Weevil - Cryptorhynchus lapathi  Unknown Weevil - Cryptorhynchus lapathi Weevil Beetle - Cryptorhynchus lapathi Poplar-and-Willow Borer - Cryptorhynchus lapathi Weevil - Cryptorhynchus lapathi Long-snouted insect - Cryptorhynchus lapathi Cheesman weevil - Cryptorhynchus lapathi
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Curculionoidea
Family Curculionidae (Snout and Bark Beetles)
Subfamily Cryptorhynchinae (Hidden Snout Weevils)
Tribe Cryptorhynchini
Subtribe Cryptorhynchina
Genus Cryptorhynchus
Species lapathi (Poplar-and-Willow Borer)
Other Common Names
Poplar-and-Willow Curculio, Mottled Willow Borer, Willow Beetle, Withy Weevil
Synonyms and other taxonomic changes
Cryptorhynchus lapathi (Linnaeus)
Orig. Comb: Curculio lapathi Linnaeus, 1758
Explanation of Names
lapathus (L). 'sorrel'
5.6–8.3 mm(1)
Holarctic; in NA, northern transcontinental (south to NC-IL-SD-UT-OR) - Map (2); it is not clear if the species was introduced into NA from Europe or is a native Holarctic species(1)
Adults and larvae asso. w/ var. spp. of willow, poplar, alder and birch (Salicaceae, Betulaceae);
larvae mine young stems(1)
Life Cycle
Adults appear in late July and August, feeding on the inner bark of young shoots. Eggs are laid singly or in groups of 2-4 in slits cut in the corky bark often in scar tissue. Young larvae feed in the cambial layer and outer layer of sapwood tunneling in all directions and pushing our their borings in small holes. When ready to pupate, the larvae bore upward and inward, constructing cells in the stem's center.(3)

One generation per year(3)

Overwinter as larvae(3)
Works Cited
1.A Review of the Genus Cryptorhynchus Illiger 1807 in the United States and Canada (Curculionidae: Cryptorhynchinae)
Anderson, Robert S. 2008. Coleopterists Society.
2.Global Biodiversity Information Facility (GBIF)
3.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.