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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However, every plant species was tested alongside with maize as a control host for Diabrotica spp.
In their work on the northern hemisphere species of Diabrotica belonging to the virgifera group, Branson and Krysan suggested that univoltinism and diapausing eggs responded to their adaptation to a few annual grasses, taking specialization as the way to not have to deal with many different toxins, as the generalist fucata group larvae would. EPPO data sheets on quarantine pests Diabrotica speciosa. Maize was considered the control host for Diabrotica spp. This tool is part of the Citrus Resource.
In South America, the most common and problematic species is Di-abrotica speciosa Germar. Caracterizacion del tercer estadio larval de Diabrotica speciosa.
However, the lack of egg diapause, makes the population levels sepciosa South American pest Diabroticites of a given season wholly dependent on the presence of adult females, and the survival of the recent egg bank.
Estudio sobre diabrptica g’nero Diabrotica Chev. Reproductive traits, natural speiosa hosts, adult feeding and oviposition hosts, and overwintering mechanisms of the different species seciosa Diabroticites, present certain generalizations that can be extracted from former studies: Chrysomelidae in beans, in Goias.
Diabrotica speciosa — Wikipédia
Clear preferences were observed in the number and regularity of eggs laid on the different hosts. Furthermore, oviposition in cups with potato plants was very limited. In the same laboratory conditions, D. When several references are cited, they may give conflicting information on the status.
Damage caused by the leaf beetle, Diabrotica speciosa Germar,on beans Phaseolus vulgaris L. The ability of D. Incidencia de parasitoides e patogenos em adultos de Diabrotica speciosa Germ.
cucurbit beetle, Diabrotica speciosa Coleoptera: Chrysomelidae
The cucurbit beetle is reported to semi-persistently vector Passionfruit yellow mosaic virusMimosa mosaic virusand Purple granadilla mosaic virus. 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. However, other species, as D.
However, the Acalymma spp. The Colombian species of the genus Diabrotica, with descriptions of those hitherto uncharacterized.
The adult feeding hosts were compared, among species, and within species in different seasons. Eggs are oviposited on the soil close to a host plant. Ds, Diabrotica speciosa; Dv, D.
Evaluation of semiochemical baits for management of southern corn rootworm Coleoptera: Special emphasis was placed on the adult, larval, and oviposition host ranges, and egg and adult overwintering strategies. They are more commonly associated with cucurbits, allegedly the ancestral host of the Diabroticina, and, at the same time, more generalists both during riabrotica adult and immature stages. Diabrotica viridula, of tropical and subtropical distribution, was found more on maize mainly silks, but also tassels than cucurbits, as compared with D.
The beetles used for observations, and to establish laboratory colonies were collected with sweep nets, funnels, and aspirators on at least 20 cultivated and wild host plants: The host preferences and ecology of D. Almost exactly the reverse of the oviposition preference. In this sense, cool weather may be regarded more as a preservation benefit until suitable hosts appear, than a hazard. However, none of these viruses are reported to infect Citrus spp.
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.
The results in Table 3 show the favorite hosts of the other common Diabroticina, in terms of average proportion of beetles per host, in different seasons. Adults, both field and laboratory speciossa beetles, were kept in cages: 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 techniques.
Diabtotica generations are possible. Distribution Table Top of page The distribution in this summary table is based on all the information available.
Field biology of Mexican corn rootworm, Diabrotica virgifera zeae Coleoptera: Also, the generalized benign climate within their distribution areas, allows for a wider pseciosa of crops and wild hosts to choose from throughout the year, restricting the idabrotica for management diabdotica.