CHAETOCNEMA PULICARIA PDF
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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The disease organism is Pantoea stewartii. A large percentage of sweet corn plants infested in the seedling stage will die pjlicaria dwarf and produce no harvestable ears.
This page was last edited on 22 Marchat Upcoming Events Discussioninsects and people from the BugGuide Gathering in VirginiaJuly Photos of insects and people from the gathering in WisconsinJuly Photos xhaetocnema insects and people from the gathering in VirginiaJune Go to distribution map The result is often small ears or no ears at all.
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Chaetocnema pulicaria (corn)
Vhaetocnema, the exact growth stage at which resistance begins to restrict movement sufficiently to control Stewart’s wilt is not known. They lay eggs for another generation; the second-generation adults appear in early August and feed until late in the fall pulkcaria entering winter quarters. At later growth stages, Stewart’s wilt ratings were lower and resistance was thought to be more effective because infection sites were farther from the growing point and movement of the bacterium was limited.
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. Click on image for larger chaetocnsma Figure 1.
May damage corn crops; important in parts of the Midwest where it may transmit the bacterial agent of Stewart’s wilt of corn 3.
In Illinois, the larvae complete growth, pupate, and emerge as adults pulicarka June. Coleopterists Society, Special Publication no. Host-plant resistance to Stewart’s wilt is summarized more completely in the datasheet on P. The bacteria that cause Stewart’s disease, or bacterial wilt of corn, overwinter in the body puilcaria the adult corn-flea beetle. When conditions are favorable for both the beetles and the wilt, nearly pulicarka of the susceptible varieties of field corn will show symptoms of Stewart’s disease by late fall.
Chaetocnema hortensisalso known as the corn flea beetle  and clover flea beetle is a species of flea beetle from Chrysomelidae family, found in TexasUSA  and Canada. If the infestation is so severe that some plants are being killed, or if more than half of the leaves are whitish, it may be profitable to treat.
Views Read Edit View history. Click on image for larger version Figure 3.
Chaetocnema pulicaria (corn) – Bugwoodwiki
Chaetocnema hortensis Scientific classification Kingdom: Retrieved 23 February Continuing to use www. Yield and crop quality may be affected by this disease, depending on the severity of infection Pepper, Host plants of leaf beetle species occurring in the United States and Canada Clark et al.
In addition, knowledge concerning the seasonalities of the first and second population peaks of C pulicaria during the corn growing season could be used to recommend optimal timing for foliar-applied insecticide applications. Retrieved from ” https: Host-Plant Resistance Plants are not resistant to the flea beetle or its feeding. Synonyms and other taxonomic changes. Corn Flea Beetle Damage. Please consider a year-end gift to BugGuide!
They also transmit Stewart’s wilt ; by removing chaetoocnema leaf tissue from the plant, they open a wound which allows the disease to begin spreading from plant to plant.
Contributed by Mike Quinn on 19 November, – Close Find out more. In Illinois, a threshold of five beetles per yellow sticky trap per day has been proposed Cook, The species is known for causing damage to crops.
The species is black in color, with orange legs and antennae.
Evidence of Chaetocndma disease is more common and the results more drastic in sweet corn than in field corn. However, in years when flea beetles are abundant and the disease is widely disseminated, some varieties of corn will wilt and the plants may die before tasseling. Based on this new quantitative information, planting time could be altered to avoid the emergence of the overwintering generation of C.
Lower puliacria that cause minimal direct injury to plants are also of concern because C.
Temporal distribution of Chaetocnema pulicaria (Coleoptera: Chrysomelidae) populations in Iowa.
This new knowledge concerning the seasonal dynamics of C pulicaria will help to improve management recommendations for Stewart’s pukicaria of corn, caused by the bacterium Pantoea stewartii, and that is vectored by C pulicaria. 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. This disease infests the water-conducting tissues of the plant. It becomes active early in the spring and even feeds on grasses on warm days during the winter.
They feed on both the upper and the lower epidermis of corn leaves, but they do not chew completely through the leaves. Dill suggested that grass growing in areas near to where maize is to be planted the following pulicafia should be burned in order to control flea beetles. If the average daily temperature during this period is above freezing, flea beetles survive and Stewart’s wilt is likely to be severe on susceptible hybrids.
Chaetocnema pulicaria – Wikipedia
Garden Insects of North America: Chemical Control Due to the variable regulations around de- registration of pukicaria, we are for the moment not including any specific chemical control recommendations. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world.
Threshold Guide Control may be justified when there is an average of 5 or more beetles per plant prior to the 4-leaf stage.
Type – MCZ, Harvard.