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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Retrieved from ” https: When plants were inoculated weeks after planting, Pataky et al. This page was last edited on 22 Marchat Host-plant resistance to Stewart’s wilt is summarized more completely in the datasheet on P.
In Illinois, a threshold of five beetles per yellow sticky trap per day has been proposed Cook, The effects of Stewart’s wilt on yield are described in detail in the datasheet on P.
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. Yields of resistant or moderately resistant hybrids were rarely affected when infection occurred after the V3 stage Suparyono and Pataky, It is able to develop and reproduce chaetocnsma secondary hosts.
Scouting Procedures Examine newly emerged corn for the presence of the beetles and count the approximate number per plant. Click on image for larger version Figure 1.
If the average daily temperature during this period is chaetcnema freezing, flea beetles survive and Stewart’s wilt is likely to be severe on susceptible hybrids. If you need expert professional advice, chaetocnma your local extension office.
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We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. Corn Flea Beetle Damage.
Chaetocnema pulicaria – Corn Flea Beetle
Life Cycle The corn flea beetle passes the winter as an adult, hibernating in debris and other suitable cover in fencerows, roadsides, or the edges of woodlands.
When the index suggests successful overwintering of beetles, damage can be reduced by avoiding early planting and by planting resistant varieties of field or sweet corn. Articles with ‘species’ microformats.
Chaetocnema pulicaria (corn)
Plants not showing these drastic effects may produce normal ears if they get plenty of water. Corn flea beetle and bacterial wilt. Slight infection may occur when the sum totalsand no infection will occur below Dedicated naturalists volunteer their time and resources here to provide this service.
Garden Insects of North America: Dedicated naturalists volunteer their time and resources here to provide this service.
Only the prothorax and the last abdominal segment are slightly darkened. Retrieved 24 February Views Read Edit View history. Dill suggested that grass growing in areas near to where maize is to be planted the following year should be fhaetocnema in order pulicria control flea beetles.
Species Chaetocnema pulicaria – Corn Flea Beetle –
Yield reduction is significantly higher due to early season systemic infection in susceptible and moderately susceptible hybrids Suparyono and Pataky, ; Freeman and Pataky, The bacterium may move systemically through susceptible plants Braun, but in resistant plants, movement of P. Contributors own the copyright to and are solely responsible for contributed content. If you need expert chaetocenma advice, contact your local extension office. The bacteria that cause Pulicariia disease, or bacterial wilt of corn, overwinter in the body of the adult corn-flea beetle.
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.