. Cooperative economic insect report. Beneficial insects; Insect pests. - 763 - STATUS OF SOME IMPORTANT INSECTS IN THE UNITED STATES TUBER FLEA BEETLE (Epltrix tuberis Gentner) Economic Importance: Tuber flea beetle is one of the most important pests of potatoes in several Western States. In Nebraska, it causes downgrading and culling. Frequently larval damage is accompsuiied by severe scab infection. Damage gives the potato a pimply appearance because of the biirrows. Tunnels and their entrances become raised and filled with a corky material. E. tuberis was long confused with potato flea bee
. Cooperative economic insect report. Beneficial insects; Insect pests. - 763 - STATUS OF SOME IMPORTANT INSECTS IN THE UNITED STATES TUBER FLEA BEETLE (Epltrix tuberis Gentner) Economic Importance: Tuber flea beetle is one of the most important pests of potatoes in several Western States. In Nebraska, it causes downgrading and culling. Frequently larval damage is accompsuiied by severe scab infection. Damage gives the potato a pimply appearance because of the biirrows. Tunnels and their entrances become raised and filled with a corky material. E. tuberis was long confused with potato flea beetle (E. cucumeris), but L. G. Gentner studied the problem and described E. tuberis as a new species in 1944. Tuber fles beetle larvae cause serious damage to potato tubers, while potato flea beetle damages the foliage principally; however, it does cause some tuber injury. Distribution: United States and Canada. The eastern limit of this species in the United States is probably western Nebraska. (See map). Hosts: Adults will attack a wide variety of wild and cultivated hosts. Larval damage seems to be generally limited to solanaceous plants, though minor damage has been reported on other hosts. Life History and Habits: Adults overwinter along field margins, fence rows and old potato fields. They begin to emerge from the soil about mid-May and continue to appear until late June or early July. Peak emergence is just before mid-June. Soon after emergence, they move into early potato fields. Eggs are laid in the soil at a depth of one-half to 2 inches, around the bases of the host plants, from late May until the last of July. Newly hatched larvae wander actively in DISTRIBUTION OF TUBER FLEA BEETLE (EPITRIX TUBERIS). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Animal and Plant Health Service. P
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