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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Adults will feed on foliage when flowers are not available.
In an experiment where seedlings of the favorite hosts of D. Crop life table studies of the pests of beans Phaseolus vulgaris L.
Moist cloth squares alone were also offered, and considered second controls to compare with the rejected, or nonpreferred, putative hosts. For permissions, please e-mail: The production of diapausing eggs was also tested for D.
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.
These Diabroticina are pests of several crops in South and Central America. Don’t need the entire report?
diabrotica beetle Diabrotica speciosa speciosa (Germar)
Insetos associados a cultura do trigo no Brasil. Adults, both field and laboratory reared beetles, were kept in cages: However, first instars could not feed on the tubers, only on the roots, although mature dpeciosa could.
The adults cause important damage in maize Zea mays L. Insetos subterraneos prejudiciais as culturas no sul do Brasil. Laboratory rearing and vital statistics of Diabrotica speciosa Germar and Diabrotica viridula F. Out of nineteen genotypes, eight were selected according to their resistance levels for an additional rearing study evaluating oviposition and fecundity. Further details disbrotica be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.
Chrysomelidaein central Mexico. This pattern held during fall, although alfalfa and soybeans were regularly found to host a large proportion of beetles as well. Zoological Journal of the Linnean Society, EPPO data sheets on quarantine pests Diabrotica speciosa. Also, the generalized benign climate within ddiabrotica distribution areas, allows for a wider range of crops and wild hosts to choose from throughout the year, restricting the potential for management alternatives.
Distribution Maps Top of page You can pan and zoom the map. 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 Distribution Table Top of page The distribution in this summary table is based on all the information available. The collection data of this species Table duabroticashow a polyphagous species, but more closely associated to maize than D.
Plants with zero larval survival were not tested again, the others had 10 more repetitions. Title Adult on soyabean. An extreme case of different feeding to oviposition host was observed in D. Anais da Sociedade Entomologica do Brasil, 18 2: All the species of Acalymma sampled were found exclusively on cucurbits.
Distribution Maps of Plant Pests, No. The number of adults emerged, the time lapse from egg to adult, and the emergence span average range in d from the first to the last adults emerged was considered to indicate the suitability of each host. Citrus Pests Content last updated June, idtools. Oviposition on different hosts by several species of South American Diabroticina.
Diabrotica speciosa belongs to the fucata group of Diabrotica, to which the North American banded, spotted or southern corn rootworm specipsa, and western spotted cucumber beetles belong Diabrotica balteata LeConte, Diabrotica undecimpunctata howardi Barber, and Diabrotica u. Roel AR; Zatarin M, Radin and Drummondreported that no adjustment could be found to a degree-day model for the striped cucumber beetle in its temperate distribution.
The eggs of D. Oviposition preferences roughly paralleled larval suitability, but there was a clear preference for cucurbits dixbrotica adult food, when available; pigweed Amaranthus quitensis Kunthsunflower Helianthus annuus L. The North American species of this group are apparently without exception uni- or semivoltine, oligophagous, and possess drought or cold resistant diapausing eggs KrysanBranson et al.
Relevant related data on other Diabroticina collected in the field, and reared in the laboratory for natural enemies and biology studies, are also presented. Chrysomelidae has many polyphagous and oligophagous species that feed on many food, ornamental, and wild plants. A similar mechanism may have enabled the adoption of potato as a larval host in the Brazilian populations of D.
Development time is longer and more irregular, and percent emergence lower, showing a general impaired development on this crop.
In this sense, cool weather may be regarded more as a preservation benefit until suitable hosts appear, than a hazard. Another relatively unexplored area of the behavior of Diabroticites is the relationship between oviposition and feeding preferences.
Facultad de Agronomia y Veterinaria, The reproductive biology, and larval and adult host range of Diabrotica speciosa GermarDiabrotica viridula F. Citing articles via Web of Science Ubaque, Colombia; type depository: Chrysomelidae larvae are important maize Zea mays L.
Merrill roots, and not so well on pumpkin Cucurbita maxima Duchesne and Cucurbita andreana Naudinbeans Phaseolus spp.