Preferred Scientific Name; Diabrotica speciosa. Preferred Common Name; cucurbit beetle. Taxonomic Tree; Domain: Eukaryota; Kingdom. Diabrotica speciosa speciosa Germar as Galeruca prasina Dejean (replacement name for speciosa Germar ). Diabrotica speciosa (Germar) and Diabrotica viridula F. (Coleoptera: Chrysomelidae) are the two most abundant species of the genus in South America, and.

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Five colonies of D.

The diapausing eggs of the North American virgifera diabroyica species, however, result in a virtually permanent egg bank, that makes the population levels of each season less susceptible to weather fluctuations.

Neither all the plant species, nor all the beetle species could be tested at the same time for reasons of space, egg or host plant availability.

Diabrotica speciosa — Wikipédia

A shift to soya as an ovipositing host has been observed in D. Anais da Sociedade Entomologica do Brasil, 17 1: Also, data on adult feeding hosts, and host range shifts related to the season, were gathered through direct observation in the field. Their eggs did not diapause, nor did overwintering adults produce eggs in any way more resistant to cold. Laboratory oviposition and larval development tests on several hosts, provided the basis to construct a table of putative hosts, and general reproductive traits related to two species groups of Diabrotica virgifera and fucata.


Resistant landraces that were infested by D.

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Feeding tests confirmed the field observations, as to the favorite adult feeding hosts, and in some cases, the marked difference between feeding and oviposition preferences Tables 2—4. Chrysomelidae has many polyphagous and diabrotiica species that feed on many food, ornamental, and wild plants. However, every dpeciosa species was tested alongside with maize as a control host for Diabrotica spp.

Anais da Sociedade Entomologica do Brasil, 18 2: The container was covered with a plastic lid that had a 4-cm opening covered with a fine mesh.

The favorite adult hosts of D. For commercial re-use, please contact journals.

Ten colonies of D. The best collections of D. This novelty, beyond the fact of neutralizing crop rotation as an effective control method, gives us an example of how unrelated oviposition and adult hosts, could operate adaptive advantages: Results indicate that D.

diabrotica beetle Diabrotica speciosa speciosa (Germar)

Email alerts New issue alert. Moist cloth squares alone were also offered, speciosaa considered second controls to compare with the rejected, or nonpreferred, putative hosts.

The results in Table 2indicate the favorite hosts of D. Elytra green, maculatewith three fuzzy-edged transverse yellow ocher maculae on each elytron. One or more of the features that are needed dibarotica show you the maps functionality are not available in the web browser that you are using.

Colonia Tovar, Venezuela; type depository: Free flight of western dabrotica rootworm Coleoptera: BMNH, lectotype, female, verified. Although Diabroticites will oviposit on several moist substrates, such as sand, soil, cotton wool, and paper, the presence of fresh food, and especially the larval host, will greatly stimulate oviposition Branson et al.

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Host plant breadth and importance of cu-curbitacins for the larvae of Diabroticites Galerucinae: However, drastic beetle density differences normally observed when two or more of the hosts were found in the same site compensate for these imprecisions, in that rarely were the densities observed close enough as to pose any doubts as to which plant species had more beetles feeding on it.

Methods for the Study of Pest Diabrotica.

Citrus Pests

However, because not all the hosts were present at each collection site, the average proportions do not necessarily idabrotica 1. However, actual feeding damage was not always observed on every plant where the overwintering beetles congregated. CO 2 is the only volatile attractant. Generate a print friendly version containing only the sections you need.

Zoological Journal of the Speciosw Society, Passo Fundo, RS, Brazil: Field biology of Mexican corn rootworm, Diabrotica virgifera zeae Coleoptera: Scutellum piceous or black.

More information about modern web browsers can be found at http: Corn rootworm rearing methodologies.