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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Fact Sheet: Cucurbit beetle | Citrus Pests

From Wikipedia, the free encyclopedia. Diabrotica viridula, of tropical and subtropical distribution, was found more on maize mainly silks, but also tassels than cucurbits, as compared with Duabrotica.

Feed mainly on vegetables, but are particularly associated with Cucurbitaceae. For corn, squash, and beans, eggs, diarbotica seeds were sown at the same time, because the root mat was adequately developed by the time the eggs hatched Cabrera Walsh A partial list includes:. Relevant related data on other Diabroticina collected in the field, and reared in the laboratory for natural enemies and biology studies, are also presented.

Citrus Pests

Our current knowledge indicates we are dealing with a complex of vicariant species in South and North America, that share reproductive and feeding traits, and affect the same crops. The cucurbit beetle is cold-tolerant and overwinters as vjridula adult. However, except for a narrower host range, and a closer association to maize for ovipositing than the fucata group representatives described herein, D.

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Reinvestigation of host location by western corn rootworm larvae Coleoptera: Moist cloth squares alone were also offered, and considered second controls to compare with the rejected, or nonpreferred, putative hosts.


The apparent host shift observed in winter for D. 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. The timing for sowing the eggs was dependent on the host plant. In the spring, adults emerge to feed on the vlridula plant.

Colombia, Muzo; type depository: Patterns of initial colonization of cucurbits, reproductive activity, and dispersion of striped cucumber beetle, Acalymma vittata F. This novelty, diqbrotica 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: UnitAPO Argentina — They hide in the crown or rosettes of winter-growing plants.

Integrated Taxonomic Information System. In this sense, cool weather may be regarded more as a preservation benefit until suitable hosts appear, than a hazard.

rootworm beetle, Diabrotica viridula (Coleoptera: Chrysomelidae) –

The collection data of this species Table 3show a polyphagous species, but more closely associated to maize than D. This unspecific behavior, would be compensated by the narrow oviposition host range observed so far in the species of the virgifera group Branson and Krysana trait of unquestionable adaptive utility in a natural environment, where adequate hosts may grow disseminated.

However, all these studies deal with North American Diabroticina, but their extension to South American species is yet to be viridila. So the adult feeding hosts of D.


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Wild and cultured cucurbits, grain crops, pasture crops, and wild species that are common hosts of adult Diabroticites, were sampled from the year to the yearto verify larval hosts in the wild. Ds, Diabrotica speciosa; Dv, D.

Laboratory test on host breadth of Acalymma and Diabrotica spp. For this, five 1-d old cohorts viridulx around 1, D. These results reflect viriduula differences in feeding and oviposition host choices for some species: Furthermore, the favorite hosts consistently had more beetles than the concurrent second choice hosts.

A similar situation was reported by Barbercheck et al. They go through three larval instars, pupate in the soil and emerge as adults in July and August, with one generation per year.

Chrysomelidae to corn and soybean plants in a walk-in wind tunnel. 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. However, because not all the hosts were present at each collection site, the average proportions do not necessarily sum 1.

By using this site, you agree to the Terms of Use and Privacy Policy. Adults like to feed on pollen-rich flowers such as cucurbits, thistle, and sunflower.