Benzel, Joseph, authorKondratieff, Boris, advisorBright, Donald, committee memberGilligan, Todd, committee memberWei, Yu, committee member2016-08-182017-08-172016http://hdl.handle.net/10217/176721This paper presents a revision of the North American species of the broad nosed weevil genus Pachyrhinus (Coleoptera: Curculionidae) Schönherr, 1823, which includes eight currently recognized species. Pachyrhinus is considered a minor pest of Pinus spp. Three species of Pachyrhinus are now recognized in North America: P. elegans (Couper, 1865), P. californicus (Horn, 1876), and P. cinereus (Casey, 1888). Pachyrhinus lateralis (Casey, 1888) and P. miscix (Fall, 1901) are considered synonyms of P. elegans. Pachyrhinus crassicornis (Casey, 1888) and P. albidus (Fall, 1901) are synonyms of P. cinereus. The previous synonymy of P. ferrugineus (Casey, 1888) with P. californicus was confirmed. The revision includes detailed images of diagnostic characters as well as scanning electron micrographs of scale morphology for all species.born digitalmasters thesesengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.polydrusiniEntiminaeText