Feeding by C. pulicaria causes irregular, fine, white scratches on the leaves of maize plants (Poos and Elliott, ). The insect eats through the epidermis of the. Genus Chaetocnema. Species pulicaria (Corn Flea Beetle). Synonyms and other taxonomic changes. Chaetocnema pulicaria F.E. Melsheimer. Description The adult is a very small, smooth, shiny, roundish, black beetle. The hind legs are distinctly enlarged and thickened, and the beetles jump readily.
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Because the corn-flea beetle is verv sensitive to temperatures, a criterion to predict the extent of overwintering heetles pulicara been developed called the Winter Temperature Index. Coleopterists Society, Special Publication no. Close Find out more. Eggs hatch in days. Upcoming Events Discussioninsects and people from the BugGuide Gathering in VirginiaJuly Photos of insects and people from the gathering in WisconsinJuly Photos of insects and people from the gathering in VirginiaJune Contributed by v belov on 19 November, – Click on image for larger version Figure 3.
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Temporal distribution of Chaetocnema pulicaria (Coleoptera: Chrysomelidae) populations in Iowa.
The same study also found that an increase in the rate of insecticide applied, from 0. A sum of and above for the three months indicates that the wilt phase of Stewart’s disease will probably be severe; a sum of indicates chaetocnea moderate wilt infection, ranging from light to severe, depending on the area.
Chaetocnema hortensis Scientific classification Kingdom: However, some maize hybrids are resistant to Stewart’s wilt Pantoea stewartii.
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Periods that ranged from 14 to 32 d were observed in and when C.
Resistant hybrids may not prevent systemic infection or main stalk death when chaetocnnema beetles feed on the leaf tissue close to the growing point before the V2 or V3 stage Pataky chaetocnemx al. Please consider a year-end gift to Pulicariaa The result is often small ears or no ears at all. Systemic infection is affected by host reaction pulicariw the growth stage at the time of infection.
The bacteria that cause Stewart’s disease, or bacterial wilt of corn, overwinter in the body of the adult corn-flea beetle. The species is known for causing damage to crops. Luring June and August, when the newly emerged adults appear, the leaves of corn may be partly covered with their feeding scars.
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Chaetocnema pulicaria – Wikipedia
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IPM : Field Crops : Corn Flea Beetle (Chaetocnema pulicaria)
Control The Winter Temperature Index is useful in indicating the probability of wilt infection for the coming season. The damaged plants chadtocnema sorghumsoybeanssweet cornsmall grains, and some vegetables. Yields of resistant or moderately resistant hybrids were rarely affected when infection occurred after the V3 stage Suparyono and Pataky, Corn Flea Beetle Chaetocnema pulicaria.
Yield reduction is significantly higher due to early season systemic infection in susceptible and moderately susceptible hybrids Suparyono and Pataky, ; Freeman and Pataky, Click on image for larger version Figure 2. It becomes active early in the spring and even feeds on grasses on warm days during the winter. A large percentage of sweet corn plants infested in the seedling stage will die or dwarf and produce no harvestable ears.
This page was last edited on 22 Marchat The insect eats through the epidermis of the maize leaf, leaving a transparent line parallel to the leaf veins; this injury is often referred to as a ‘windowpane’ effect. Contributors own the copyright to and are solely responsible for contributed content.