Grape Snout Beetle

Grape Snout Beetle

 

grape weevil, a species of beetles from the Curculionidae family, a grapevine pest. The greatest damage is caused by the Turkish and Crimean grape snout beetles. The Turkish grape snout beetle (Otiorrhynchus turca) has a body 8-11 mm long; it is black, and the legs are brownish. The larvae are white with a brownish head and are up to 14 mm long. In the USSR, this pest is encountered on the Black Sea coast of the Caucasus. It causes great damage to grapevines and somewhat less to pears, apples, apricots, cherries, oak, and other plants. Males are unknown; the grape snout beetle reproduces parthenogenically. The beetles gnaw the buds and eat the leaves. The larvae feed on humus and also eat the grapevine roots. As a result the harvest is sometimes reduced by 20 percent. The Crimean grape snout beetle (O. asphaltinus) is similar to the Turkish one. It is found in the Crimea. Preventive measures include treating the plants with insecticides.

REFERENCES

Krasnianskii, A. I. “Vinogradnyi slonik-skosar’ turetskii (Otiorrhynchus turca Bohem) i mery bor’by s nim.” Tr. Anapskoi opytnoi stantsii, 1929, issue 5.
Prints, Ia. I. Vrediteli i bolezni vinogradnoi lozy, 2nd ed. Moscow, 1962.
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