Abstract. The reproductive biology, and larval and adult host range of Diabrotica speciosa (Germar), Diabrotica viridula (F.), Acalymma spp. (Coleoptera: Chrys. Diabrotica viridula. Alexander Derunkov. rootworm beetle. Diabrotica viridula. Alexander Derunkov. rootworm beetle. Diabrotica viridula. Alexander Derunkov. FAMILIA CHRYSOMELIDAE Latreille, SUBFAMILIA GALERUCINAE Latreille, TRIBU Luperini Gistel, Diabrotica viridula Fabricius.

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Diabrotica viridula, of tropical and subtropical distribution, was found more on maize mainly silks, but also tassels than cucurbits, as compared with D. In the same laboratory conditions, D. They also reported mass attacks on squash seedlings early in the growing season.

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Diapause in the nearctic species of the virgifera group of Diabrotica: Galerucinaeand other Diabroticina are described. Adults will feed on foliage when flowers are not available. Feed mainly on vegetables, but are particularly associated with Cucurbitaceae. However, actual feeding damage was not always observed on every plant where the overwintering beetles congregated.

The average proportion of beetles collected on each host per season was taken as a measure of host preference.


rootworm beetle, Diabrotica viridula (Coleoptera: Chrysomelidae) –

Sutural angle of elytra round, punctation dense, coarse. Adults like to feed on pollen-rich flowers such as cucurbits, thistle, and sunflower.

Sign In or Create an Account. The pupal stage is white and has the basic shape of the adult. The most suitable hosts, as regards survival from egg to adult, were maize, wheat, and peanuts 32, Merrilland damage to the tender parts of almost every crop ChristensenLink and Costa According to our caged experiments, this species can develop on potato.

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However, all these studies deal with North American Diabroticina, but their extension to South American species is yet to be confirmed. Survival of eggs of D. Moist cloth squares alone were also offered, and considered second controls to compare with the vieidula, or nonpreferred, putative hosts.

In effect, the levels of both D. Corn rootworms are one of the most economically significant consumers of maize in the United States. Members of this genus include several destructive agricultural pest species.

In the southernmost homelands of D. Finally, — eggs, depending on the number of eggs available, were pipetted from diabroyica beaker, and spread on the culture. Relevant related data on other Diabroticina collected in the field, and reared in the laboratory for natural enemies and biology studies, are also presented.


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Corn Zea mays L. Adult Diabroticites of most of the species studied are primarily pollen feeders, and pharmacophagous on bitter cucurbits Nishida and Fukamiand they seem to follow down a series of hosts as the favorite ones go missing in the field: For commercial re-use, please contact journals.

Five colonies of D. When any chrysomelid larvae were found, they were placed in a maize seedling culture, and transported to the laboratory for identification. Elytral epipleura completely yellow or completely green.

Comparison of cucurbit cultivars as hosts and description of a technique for rearing the striped cucumber beetle Co-leptera: Diabrotica speciosa fucata group larvae developed well on maize Zea mays L. Clear ivridula were observed in the number and regularity of eggs laid on the different hosts.