New York weevil
| New York weevil | |
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| Family: | Ithyceridae Schönherr, 1823
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| Genus: | Ithycerus
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| Species: | I. noveboracensis
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| Binomial name | |
| Ithycerus noveboracensis Forster, 1771
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The New York weevil (Ithycerus noveboracensis) is an species of primitive weevil; large for weevils (12-18 mm), it is covered with fine bristles and has a regular pattern of light and dark spots. It occurs in the eastern United States and southern Canada.
The rostrum (snout) is broad and stout, while the antennae are straight and thin, with the final three antennomeres making a small club.
This weevil is found in association with various plants of Fagaceae, Betulaceae, and Juglandaceae, in particular white oak and American beech. Adults feed on new growth and other soft parts, such as leaf petioles and buds. They lay their eggs in the ground, and the grubs then eat the roots of the same plants.
Though originally placed in Curculionidae, coleopterists agree that Ithycerus belongs in a distinct family Ithyceridae, as it does not have elbowed antennae, a characteristic of true weevils. It is the only species in its family.
References
- Robert S. Anderson, "Ithyceridae", in Ross H. Arnett, Jr. and Michael C. Thomas, American Beetles (CRC Press, 2002), vol. 2
- M. Sanborne, "Biology of Ithycerus noveboracensis (Forster) (Coleoptera) and weevil phylogeny", Evolutionary Monographs 4: 1-80 (1981)