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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Development time is longer and more irregular, and percent emergence lower, showing a general impaired development on this crop.
Diabrotica viridula Fabricius
Email alerts New issue alert. The ability of D. The indirect density measure used to determine the favorite adult hosts of the different Diabroticites studied is far from precise, because different hosts allow different possibilities of finding and capturing the beetles e.
Species of the fucata group, however, are generally multivoltine, polyphagous, and are not known to have species with diapausing eggs, but rather overwintering adults Krysan and Smith Then 60 seeds, or one sprouted tuber, were buried in the container. These results reflect clear differences in feeding and oviposition host choices for some species: Elytra green, yellow or rufous, with three chestnut spots on each elytron sometimes reduced to a variable extent, basal virisula form a band, which may be reddish or ochraceous orange; two sulphur yellow patches present in specimens with no apical dark spots.
It suggests that we face a taxon of insects whose adaptability to new and unfavorable conditions challenges our capacity to predict host crop and geographical range shifts, as well as our chances to provide new management diabrktica. The larvae were incubated on seedlings and sprouted tubers in the case of potatoes, C. Members of this genus include several destructive agricultural pest species.
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. Galerucinaeand other Diabroticina are described. Species such as Acalymma albidovittata BalyAcalymma bivittula Kirschand Acalymma bruchii Bowditchoften reach very high populations on cucurbit cultures, causing significant damage to flowers, foliage, and young fruit unpublished data.
Close mobile search navigation Article navigation. The sole South American species of this group considered a pest is Diabrotica viridula F.
Corn Zea mays L. Cucurbita andreana Naudin, melon C.
BMNH, lectotype, male, verified. Monitoring of western corn rootworm Diabrotica virgifera virgifera LeConte in Europe Views Read Edit View history. A minimum of five replications were tried diqbrotica each species on each putative host.
At least species in 24 families were examined in southern South America, and found to host feeding adult beetles at least once Table 1. Maxillary palpi yellow, yellow ocher or amber yellow, labrum black, chestnut or yellow ocher.
Fact Sheet: Cucurbit beetle | Citrus Pests
Chrysomelidae larval injury to corn grown for seed production following soybeans grown for seed production. Multiple generations are possible. Cooperative Agricultural Pest Survey – Approved methods: Diabbrotica tropical areas, the cucurbit beetle reproduces continuously. Maize was considered the control host for Diabrotica diabrofica. The diapausing eggs of the North American virgifera pest species, however, result in a virtually permanent egg bank, that makes the population levels of each season less susceptible to weather fluctuations.
In South Diwbrotica, the most common and problematic species is Di-abrotica speciosa Germar. MfN, lectotype, male, 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.
The container was covered with a plastic lid that had a 4-cm opening covered with a fine mesh. This new knowledge on South American Diabroticina is discussed in the context of the current knowledge on North American Diabroticina. The apparent host shift observed in winter for D. Larvae complete three instars while feeding on the roots of the host plant and pupate in the soil.