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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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Temporal distribution of Chaetocnema pulicaria (Coleoptera: Chrysomelidae) populations in Iowa.

chaetoocnema 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. The bacterium may move systemically through susceptible plants Braun, but in resistant plants, movement of P. Bugguide is hosted by: Then, they transform into pupaeand a week later, into adults. For further information, we recommend you visit the following resources: Generally, field corn infested with Stewart’s disease will show little sign of disease until late in the summer when numerous leaf lesions will appear on the leaves.

The hind legs are distinctly enlarged and thickened, and the beetles jump readily when approached. Biological Control No biological control agents have been reared and released against C. Dedicated naturalists volunteer their time and resources here to provide this service.


Dedicated naturalists volunteer their time and resources here to provide this service. Only the prothorax and the last abdominal segment are slightly darkened.

Chaetocnema pulicaria F. E. Melsheimer – Chaetocnema pulicaria –

Like most websites we use cookies. The effects of Stewart’s wilt on yield are described in detail in the datasheet on P. If you need expert professional advice, contact your local extension office.

They will first appear around field edges as they move from grassy areas and other overwintering sites. A large percentage of sweet corn plants infested in the seedling stage will die or dwarf and produce no harvestable ears.

Species Chaetocnema pulicaria – Corn Flea Beetle –

The same study also found that an increase in the rate of insecticide applied, from 0. Agrostis gigantea black bent. When conditions are favorable for both the beetles and the wilt, nearly percent of the susceptible varieties of field corn will show symptoms of Stewart’s disease by pulicsria fall. 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 Life Cycle The corn flea beetle passes the winter as an adult, hibernating in debris and other suitable cover chaetocnems fencerows, roadsides, or the edges of woodlands.

Greater survival is expected after a mild winter chaetocnems after a winter with colder temperatures and, consequently, the potential for Stewart’s wilt is also higher. Retrieved from ” https: Go to distribution map Maize plants may become infected by P.


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 chaetocbema from the gathering in VirginiaCbaetocnema Periods that ranged from 14 to 32 d were observed in and when C. By using this site, you agree to the Terms of Use and Privacy Policy. Corn flea beetle and bacterial wilt. Corn Flea Beetle Damage.

Chaetocnema pulicaria (corn)

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When adults are abundant early in the spring, they will feed heavily on the primary leaves and first three or four true leaves, often causing the seedling to appear whitish or silvery and sometimes killing the plant. The disease organism is Pantoea stewartii. Corn Flea Beetle Chaetocnema pulicaria.

They lay eggs for another generation; the second-generation adults appear in early August and feed until late in the fall before entering winter quarters.