LIBRARY

602 COLLEGE ENTOMOLOGY
Fuller's rose weevil, Pantomorus godmani (Crotch), brown, 7-9 mm., is
now widely distributed in the Northern Hemisphere. The white fringed weevil,
P. leucoloma Boheman, was first discovered in Florida in 1936 and has received
much publicity as a new pest in North America.
Polyd1usus Germar, 186 spp. (Holarctic, NeotropicaI), and Naupactus
Schcen., 183 spp. (Neotropical) are large New World genera.
Hype1a Germar, 117 spp. (Holarctic and Indo-Australasian), and Phytonomus
Schcenherr, 114 spp. (Holarctic), have exposed plant-feeding larvre
that spin lace-like cocoons for pupation and include a number of species that
injure leguminous crops. Of these the clover leaf weevil, H. punctata (Fab.),
and the alfalfa weevil, H. PQstica (Gyllenhal), are the most important.
Pissodes Germar, 48 spp. (Holarctic). Small weevils attacking coniferous
trees. The white pine weevil, P. strobi Peck, of North America, is a very important
pest of white pines.
Listroderes Schrenherr, 122 spp. (Neotropical). The vegetable weevil, L. ob·
liquus Klug (== costirost1is Schoen.) has been introduced into Australia,
Hawaii, North America, and South Africa. The related genus Listronotus
Jekel, 31 spp., is North American.
Tychius Germar, 259 spp. (Holarctic, Ethiopian). Balaninus Germar,
about 50 spp., 26 North American (HoI arctic, Neotropical and Indo-Malay·
sian), includes the common acorn weevils with very long snouts and legs.
Anthonomus Germar, 327 spp. (cosmopolitan excepting Ethiopia). Many
species are serious pests like the apple blossom weevil, A. pomorum (Linn.),
of Europe, and the cotton boll weevil, A. grandis Boheman and the pepper
weevil, A. eugenii Cano of North and South America. Cleonus Schum., 497
spp., and Lixus Fab., 499 spp., are both widely distributed in the Northern
Hemisphere. Ceutorhynchus Cermar, 498 spp., (Holarctic, Indian, Madagascan,
Neotropical) contains many very destructive forms. Conotrachelus Schcen.,
427 spp. (North and South American) contains a number of destructive fruit·
and seed-infesting species including the plum curculio, C. nenuphar Herbst.
Crypto1hynchus I11iger, 362 spp. (cosmopolitan) contains a large number of
economic species including the poplar and willow borer, C. lapathi (Linn.),
(HoI arctic) and C. assimilis Paykull and C. quadridens Panzer, pests of cru·
ciferous plants, in Europe. Cossonus Clairville, 200 spp. (cosmopolitan) and
associated with forest trees. Sphenophorus Schcen., with over 200 spp. of which
67 are North American, is cosmopolitan with the exception of Ethiopia. It
includes many important economic species of weevils commonly called billbugs.
Calandra Clairville, 158 spp., is truly cosmopolitan as is also Sitophilus Schcen.,
with 17 spp. The two cereal-infesting weevils, the granary weevil, S. grunarius
(Linn.), and the rice weevil, S. oryza (Linn.), probably cause the greatest
financial losses due to any two insects.
Many genera of this family are well represented by fossils in the Florissant
Miocene beds of Colorado.
Family BRENTID..E Gerstrecker 1863.
A small family of 900 species characterized by the long narrow bodies and