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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This new knowledge on South American Diabroticina is discussed in the context of the current knowledge on North American Diabroticina.
Merrilland damage to the tender parts of almost every crop ChristensenLink and Costa Chrysomelidae in beans, in Goias. The results in Table 3 show the favorite hosts of the other common Diabroticina, in terms of average proportion of beetles per host, in speeciosa seasons. Revista Ceres, 31 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.
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Ubaque, Colombia; type depository: Of these, the genus Diabrotica Chevrolat includes the greatest number of pest species, including some of the most important row crop and vegetable pests of the Americas, be it the foliage, fruit- or flower-feeding adults, or the root-feeding larvae. Colonia Tovar, Venezuela; type depository: The ability of D. Tests on oviposition preference were performed using these cups with maize, cucurbits butternut squash Cucurbita pepo L.
Distribution Maps of Plant Pests, Dianrotica.
EPPO Pest risk assessment area: Aedeagus symmetric, with three internal sac sclerites. Chrysomelidae larval injury to corn grown for seed production following soybeans grown for seed production. Chrysomelidaein central Mexico. Out of nineteen genotypes, eight were selected according to their resistance levels for an additional rearing study evaluating oviposition and fecundity.
Evaluation of semiochemical baits for management of southern corn rootworm Coleoptera: Development of laboratory reared D.
The average proportion of beetles collected on each host per season was taken as a measure of host preference. BMNH, lectotype, female, verified. This study investigated whether the growth, survival, oviposition rhythm, fecundity, and fertility of D. Also, the mobility of the beetles makes counting very imprecise because, for instance, they can fly away or hide more easily in the foliage of a soybean row than in the large, relatively isolated sunflower head. Genetic Structure of Liriomyza trifolii Diptera: View large Download slide.
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. A similar situation was reported by Barbercheck et al.
Almost exactly the reverse of the oviposition preference.
Antennae filiformbi- or tricolored, antennomere 1 pale olivine, antennomeres yellow, upper sides darkened, antennomeres cinnamon brown. Efficiency of water pumpkin Lagenaria vulgaris-Cucurbitacea baits treated with insecticides on attractiveness to Speciowa speciosa Germar, Coleoptera: In this context, the South American virgifera group Diabrotica may have found a more benign climate, where suitable hosts were available most of the year, and overwintering as adults was possible, thus losing these traits, or never developing them.
However, first instars could not feed on the tubers, only on the roots, although mature larvae could. Email alerts New issue alert.
Population characteristics of a western corn rootworm Coleoptera: Results indicate that D. Datasheet Diabrotica speciosa cucurbit beetle. Resistance to insect pests can be found in several native, landrace plants and can be an important alternative to conventional control methods. Another group within the genus, the virgifera group, includes the northern Diabrotica barberi Smith and Lawrencewestern Diabrotica virgifera virgifera LeConteand Mexican Diabrotica v.
So it gives a rough but representative estimation of the favorite, mediumly favored, and little visited hosts for each common Diabroticites species in different seasons. Plants with zero larval survival were not tested again, the others had 10 more repetitions.
Roel AR; Zatarin M, Differences and similarities are discussed in connection with their pestiferous status, and their potential for adaptation to new hosts. Diabrotica speciosa Germar Coleoptera: 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. Elytral epipleura completely green, sutural angle of elytra round, punctation scattered, fine.
Taxonomic Tree Top of page Domain: Pronotum paris green or green, subquadrate, bifoveate, with small round foveae, not shagreened.
cucurbit beetle, Diabrotica speciosa Coleoptera: Chrysomelidae
Field biology of Mexican corn rootworm, Diabrotica virgifera zeae Coleoptera: Together with these methods, polyester cloths specoosa with root or berry extracts of the wild, perennial cucurbits, tayuya Cayaponia spp. Furthermore, the larvae seem to be unable to choose a suitable host other than by taste Branson and KrysanBernclau and Bjostad However, the fact is that the South American pest Diabrotica pose different problems to the North American species.
Clear preferences were observed in the number and regularity of eggs laid on the different hosts. Please consider upgrading your browser to the latest version or installing a new browser. Oviposition preferences roughly paralleled larval suitability, but there was a clear preference for cucurbits as adult food, when available; pigweed Amaranthus quitensis Kunthsunflower Helianthus annuus L. Patterns of initial colonization of cucurbits, reproductive activity, and dispersion of striped cucumber beetle, Acalymma vittata F.
Chrysomelidae larvae are important maize Zea mays L. Caracterizacion del tercer estadio larval de Diabrotica speciosa.