Horace R. Burke

Revision of the Neotropical genus Achia champion (coleoptera: Curculionidae)

The neotropical weevil genus Achia Champion is taxonomically revised. The genus is distributed from the State of San Luis Potosi in Mexico southward through Central America to southern Brasil. Sixteen species are recognized, 10 of which are described here for the first time. The following species are described as new: Achia ancile, Brazil; A. bondari, Brazil; A. crucifer, Brazil; A. fausti, Venezuela; A. gounellei, Brazil; A. hustachei, Brazil and Argentina; A. obesa, Brazil; A. scutellacuta, Mexico; A. serjaniae, Costa Rica, Guatemala and Mexico; and A. vesca, El Salvador. Achia strangulata is transferred from the genus Anthonomus. Lectotypes are designated for A. adusta Champion, A. rhombifera Champion and A. strangulata (Faust). Each of the sixteen species is described and keyed. Habitus photographs and illustrations of genitalia and other taxonomic characters are presented for most of the species.Distributions of the species are mapped. Little is known about the biology of members of the genus. Achia ...

The Weevil Genus Achia Champion (Coleoptera: Curculionidae): New Species Associated with Urvillea (Sapindaceae) and New Serjania Host Plant Records for A. ancile Burke and A. affinis Hustache

Abstract Three new species of the weevil genus Achia Champion are described: A. urvilleae Clark and Burke from the state of Santa Catarina, Brazil and Misiones Province, Argentina; A. uniformis Clark and Burke from Bolivia; and A. boliviana Clark and Burke from Bolivia and Salta and Santiago del Estero provinces, Argentina. Keys and illustrations to facilitate identification of the species are provided. New host plant records for these and other species of Achia include: Urvillea ulmacea Kunth for A. urvilleae; Urvillea chacoensis Hunz. for A. boliviana; Serjania laruotteana Cambess for A. ancile Burke; and Serjania fuscifolia Radlk. for A. affinis Hustache. The genus Achia is apparently most closely related to Cissoanthonomus Hustache and Cionopsis Champion. These three genera have the head constricted behind the eyes, profemora greatly enlarged, and their known hosts are plants of the family Sapindaceae.

Revision of the Weevil Genera Magdalinops Dietz and Chelonychus Dietz (Coleoptera: Curculionidae, Anthonomini)

Abstract Four species of Anthonomini from western North America are assigned to the genus Magdalinops Dietz: M. vittipennis Dietz from California, the type species; M. knowltoni, new species, from Utah; M. falli, new species, from California, Nevada, Oregon and Wyoming; and M. alutaceus (Hatch), new combination, transferred from Epimechus Dietz, from British Columbia, California, Colorado, Idaho, Montana, North Dakota, Oregon, Utah, Washington and Wyoming. The species of Magdalinops are distinguished by the shining, glabrous basal segment of the compact, ovoid antennal club and by narrowly separated mesocoxae. Adults of these species have been collected on plants in either Artemisia or Chrysothamnus (Asteraceae). Two species of Anthonomini, also from western North America, are assigned to Chelonychus Dietz: C. longipes Dietz, the type species, and C. stragulus (Fall), new combination, transferred from Epimechus. The species of Chelonychus are distinguished from other anthonomines by the long, slender, strongly flexed tarsal claws. Adults of one of the species have been collected on Artemesia ludoviciana Nutt. (Asteraceae). Shared possession of exceptionally long, slender tarsal claws by species of Chelonychus and some species of Magdalinops, and common association with Artemesia are indications that the two weevil genera are closely related.

Bionomics of Several North American Species of Anthonomus (Coleoptera: Curculionidae)

Information on the life history, habits, host plants, parasites and taxonomy is presented for 9 species of the weevil genus, Anthonomus. Included are new host records for 5 species and new parasite records for 4 species. The pupal and larval stages of Anthonomus dealbatus Champion and A. heterogenus Dietz are described and illustrated. Anthonomus callirrhoae Pierce is synonymized with Anthonomus squamans Champion (New Synonymy). Information on the life history, habits, hosts and immature stages of various species of the weevil genus Anthonomus Germar has been published by Burke (1968), Ahmad and Burke (1972), and Gates and Burke (1972). We have recently accumulated additional biological data on the following species: ANTHONOMUS DEALBATUS CHAMPION. This weevil was originally described (Champion, 1910) from a single female collected in Guatemala. Except for being listed in a checklist by Blackwelder (1947) and in Coleopterorum Catalogus by Schenkling and Marshall (1934), the species has not been reported in the literature since being described. The present account includes the first report of the species from Mexico, a new host record, and the first descriptions of its larval and pupal stages. Adults were collected on Sida cordifolia L. near Lerdo de Tejada, Veracruz, Mexico in June 1965. These specimens were determined by direct comparison with the Champion type which is deposited in the British Museum (Natural History). On 23 August 1967 adults, larvae and pupae were taken from S. cordifolia at the Lerdo de Tejada locality. Larvae develop in the fruit capsules of this plant and pupation occurs in the larval feeding cavity. 1 Technical article no. 10417. Department of Entomology, Texas Agricultural Experiment Station, Texas A&M University.