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Subfamily Apioninae - Pear-shaped Weevils

Weevil - Trichapion Apionine(?) from wild bean - Trichapion sayi Apioninae, dorsal - Fallapion impunctistriatum Baptisia-pod weevils Apioninae? Smicronyx? - Rhopalapion longirostre Tiny Black Weevil Apioninae, frontal - Kissingeria amaura
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 Brentidae (Primitive Weevils)
Subfamily Apioninae (Pear-shaped Weevils)
Synonyms and other taxonomic changes
out of 7 supertribes, only one (Apionitae) is represented in our area(1)(2)
Explanation of Names
Apioninae Schönherr 1823
Numbers
ca. 300 spp. in our area(3)(4), ~2200 in >200 genera total (Alonso-Zarazaga & Wanat 2014 in: Handbook of Zoology. Arthropoda: Insecta. Coleoptera, Beetles 3: 395)
Classification adopted in (2):
Subfamily APIONINAE: Supertribe APIONITAE
Tribe Apionini Schönherr 1823
Subtribe Apionina Schönherr 1823: Sayapion
Subtribe Aplemonina Kissinger 1968: Perapion
Subtribe Aspidapiina Alonso–Zarazaga 1990: Alocentron
Subtribe Ceratapiina Alonso–Zarazaga 1990: Omphalapion
Subtribe Exapiina Alonso–Zarazaga 1990: Exapion
Subtribe Ixapiina Alonso–Zarazaga 1990: Neapion
Subtribe Malvapiina Alonso–Zarazaga 1990: Rhopalapion
Subtribe Oxystomatina Alonso–Zarazaga 1990: Eutrichapion · Loborhynchapion
Subtribe Piezotrachelina Voss 1959: Fallapion
Subtribe Synapiina Alonso-Zarazaga 1990: Ischnopterapion · Stenopterapion
Subtribe Trichapiina Alonso–Zarazaga 1990: Betulapion · Kissingeria · Trichapion
Apionini incertae sedis: Coelocephalapion · "A." cuprescens Mannerheim 1843 AK
Tribe Podapiini Wanat 2001: Podapion
Identification
"Head with rostrum prostrate, eyes separated by neck from anteriour margin of pronotum, pronotum rather slender and subconical." Elytra usually widest behind middle. "Femora separated from coxae by the elongated trochanters, appearing as an extra segment of the legs (only being a laterobasal appendage of the femur in all other weevils, except for Cylas and Nanophyini)." (Boris Büche's comment)
keys to northern spp. in (3)
Print References
(5)
Works Cited
1.Family-group names in Coleoptera (Insecta)
Bouchard P, Bousquet Y, Davies A, Alonso-Zarazaga M, Lawrence JF, Lyal CH, Newton A, Reid CA, Schmitt M, Ślipiński SA, Smith A. 2011. ZooKeys 88: 1–972.
2.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.
3.The weevils of Canada and Alaska: Vol. 1. Coleoptera: Curculionoidea, excluding Scolytidae and Curculionidae
Bright D.E. 1993. The insects and arachnids of Canada, Pt. 21. Ottawa: Agriculture Canada. 217 pp.
4.Ischnopterapion virens (Herbst) (...), a Palearctic clover weevil new to North America...
Hoebeke E.R., Byers R.A., Alonso-Zarazaga M.A., Stimmel J.F. 2000. Proc. Entomol. Soc. Wash. 102: 151-161.
5.Curculionidae subfamily Apioninae of North and Central America, with reviews of the world genera of Apioninae...
Kissinger D.G. 1968. Taxonomic Publications. South Lancaster, MA. vii+559 pp.