Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Fall Fund Drive


Genus Lignyodes - Ash Seed Weevils

unknown weevil - Lignyodes helvolus Weevil - Lignyodes helvolus Weevil - Lignyodes fraxini Lignyodes fraxini weevil - Lignyodes pallidus 910W03 - Lignyodes helvolus 919W12 - Lignyodes helvolus Lignyodes (Neotylopterus) ligustricolus (Clark) - Lignyodes ligustricolus
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 Curculioninae
Tribe Tychiini (Leguminous Seed Weevils)
Subtribe Lignyodina
Genus Lignyodes (Ash Seed Weevils)
Synonyms and other taxonomic changes
NA members of the nominate subgenus revised in(1)
Explanation of Names
Lignyodes Dejean 1835
17 spp. in our area(2)
2.3-4.0 mm (Solomon et al. 1993)
much of NA(2)
Adults emerge during Jul-Aug and are present until autumn; one generation per year (Solomon et al. 1993)
hosts: Oleaceae(2)
Three ash seed weevils, Lignyodes bischoffi (Blatchley), L. helvolus (LeConte), and L. horridulus (Casey), occur throughout the United States and Canada. These weevils feed on the seeds of ashes and lilac. Over 60 percent of the ash seeds in the Northeastern States and up to 95 percent in the Great Plains may be destroyed. (Solomon et al. 1993)
Print References
Solomon J.D., Leininger T.D., Wilson A.D., Anderson R.L., Thompson L.C., McCracken F.I. (1993) Ash pests: A guide to major insects, diseases, air pollution injury and chemical injury. Gen. Tech. Rep. SO-96. U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station, New Orleans, LA. 45 pp.
Internet References
Fact sheet (Solomon et al. 1993)(3)
Works Cited
1.Revision of the weevil genus Lignyodes Dejean (Coleoptera: Curculionidae) in America north of Mexico
Clark W.E. 1980. Trans. Am. Ent. Soc. 106: 273-326.
2.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
3.Bugwood Network