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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Contributors own the copyright to and are solely responsible chwetocnema contributed content. Plants not showing these drastic effects may produce normal ears if they get plenty of water.

Chaetocnema hortensisalso known as the corn flea beetle [1] and clover flea beetle[2] is a species of flea beetle from Chrysomelidae family, found in TexasUSA [3] and Canada.

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 In Illinois, a threshold of five beetles per yellow sticky trap per day has been proposed Cook, Based on this new quantitative information, planting time could be altered to avoid the emergence of the overwintering generation of C.

May damage corn crops; important in parts of the Midwest where it may transmit the bacterial agent of Stewart’s wilt of corn 3. Click on image for larger version Figure 1. Systemic infection is affected by host reaction and the growth stage at the chaftocnema of infection. The first summer peak of C pulicaria was observed between the end of June into the middle of July, with the highest observed peak at Close Find out more. The larvae feed especially on plants’ rootscausing serious damage.


Then, they transform into pulicarriaand a week pullcaria, into adults. Not much is known about the larvae, but they probably feed on the roots of grass plants. Garden Insects of North America: The eggs hatch in 7 to 14 days into larvae. Host plants of leaf beetle species occurring in the United States and Canada Clark et al.

Chaetocnema pulicaria – Corn Flea Beetle

Agrostis gigantea black bent. After mating, the females lay their eggs on plant leaves or chaetocneam the ground, on or near underground stems and roots. Luring June and August, when the newly emerged adults appear, the leaves of corn may be partly covered with their feeding scars. When plants were inoculated weeks after planting, Pataky et al.

Chaetocnema pulicaria (corn)

Cookies on Plantwise Knowledge Bank Like most websites we use cookies. Damage Little is known about damage caused by the larvae, but damage by the adults is very evident. Contributed by v belov on 19 November, – Slight infection may occur when the sum totalsand no infection will occur below Retrieved 23 February However, the exact growth stage at which resistance begins to restrict movement sufficiently to control Stewart’s wilt is not known.

The same study also found that an increase in the rate of insecticide applied, from 0. Most varieties of commercial field corn are resistant to this diseases. The bacterium may move systemically through susceptible plants Braun, but in resistant plants, movement of P.


Remarks May damage corn crops; important in parts of the Midwest where it may transmit the bacterial agent of Stewart’s wilt of corn 3. Dill suggested that grass growing in areas near to where maize is to be planted the following year should be burned in order to control flea beetles.

Control The Winter Temperature Index is useful in indicating the probability of wilt infection for the coming season. The bacteria that cause Stewart’s disease, or bacterial wilt of corn, overwinter in the body of the adult corn-flea beetle. Maize plants may become infected by P. Bugguide is hosted by: Views Read Edit View history.

Biological Control No biological control agents have been reared and released against C. Please consider a year-end gift to BugGuide!

corn flea beetle (Chaetocnema pulicaria)

Only the prothorax and the last abdominal segment are slightly darkened. Click the contributor’s name for licensing and usage information.

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