Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Lixus

Very Neat Looking Insect - Lixus concavus Weevil (Lixus sp)? - Lixus concavus Weevil overwintering in sunflower stalk - Lixus macer Weevil - Lixus terminalis Lixus rubellus CURCULIONIDAE. Lixus concavus?  Rhubarb weevil - Lixus concavus Curculionoidea - Lixus Lixus scrobicollis? - Lixus concavus
Classification
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 Lixinae
Tribe Lixini
Genus Lixus
Other Common Names
genus includes the Rhubarb Beetle or Rhubarb Curculio (L. concavus) and the Knotweed Weevil (L. parcus).
Synonyms and other taxonomic changes
genus needs revision(1)
Explanation of Names
Lixus Fabricius 1801
'ash/lye-covered'
Numbers
~30 spp. in our area (R.S. Anderson, pers.comm. to =v=, Jan 2018), close to 1,000 in 17 subgenera worldwide(2)
Size
5.5―20+ mm
Identification
Medium to large elongated, cylindrical weevils often covered with waxy bloom (light-yellow to reddish), easily rubbed away
Range
worldwide, incl. most of NA(1)(2)
Habitat
open habitats
Food
associated with various Asteraceae and Polygonaceae(1)
Remarks
not yet in the guide:
L. lateralis Say 1831;
L. fossus LeConte 1876;
L. juelichi, laramiensis, obesulus, oregonus, and sobrinus Casey 1891;
L. perlongus Fall 1913
L. aspericollis, buchanani, cleonoides, flexipennis, lodingi, plucheae, and regularipennis Chittenden 1930
[some of the latter may be synonyms]
Works Cited
1.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.
2.A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera)
Alonso-Zarazaga M.A., Lyal C.H.C. 1999. Entomopraxis, Barcelona. 315 pp.