The Anthonomus squamosus species-group (Coleoptera: Curculionidae: Curculioninae: Anthonomini) contains 31 species in North America. The known host plants of the group are divided between species of Asteraceae and Malvaceae. Characters diagnostic of the group and descriptions of each of the species are given and illustrated, and a key to the species is presented. Host plant associations are given, when known. Seven new species are described: Anthonomus proximatus Clark and Burke, new species (USA: AR, MI, OK, TN); Anthonomus vittatus Clark and Burke, new species (USA: CA, UT); Anthonomus smithi Clark and Burke, new species (Mexico: Chiapas, Colima, Guerrero, Hidalgo, Jalisco, Michoacán, Morelos, Nayarit, Oaxaca, Puebla, San Luis Potosí, Sonora, Veracruz); Anthonomus obrienorum Clark and Burke, new species (USA: CA); Anthonomus bowditchi Clark and Burke, new species, (Mexico: Sonora, Veracruz); Anthonomus robinsonelli Clark and Burke, new species (Mexico: Chiapas, Hidalgo, Nuevo León, Tamaulipas); and Anthonomus curvicrus Clark and Burke, new species (Mexico: Estado de México, Oaxaca, Tlaxcala, Veracruz). Lectotypes are designated for Anthonomus squamans Champion, Anthonomus solarii Champion, Anthonomus tectus LeConte, Anthonomus testaceosquamosus Linell, and Anthonomus rubricosus Boheman.
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Vol. 73 • No. 4