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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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: Chrysomelidaetwo species of South American diarbotica rootworms. The best collections of D. It has since spread primarily in Italy, France and Germany. The larvae of the banded cucumber beetle can cause extensive damage to tuber-bearing crops. By using this site, you agree to the Terms of Use and Privacy Policy.

The other species collected were also offered a meridic diet, but they survived better on squash slices and seedlings unpublished data. Systematics of the virgifera species group of Diabrotica Coleoptera: For commercial re-use, please contact journals.

The apparent host shift observed in winter for D. Furthermore, the favorite hosts consistently had more beetles than the concurrent second choice hosts. Elytral epipleura completely yellow or completely green. Diabrotica was unknown in Europe until the late s and was forbidden even in laboratories because of the biridula in eliminating it with insecticides.

Diabrotica viridula, of tropical and subtropical distribution, was found virjdula on maize mainly silks, but also tassels than cucurbits, as compared with D. Six colonies of D. The results in Table 3 show the favorite hosts of the other common Diabroticina, in terms of average proportion of beetles viridual host, in different seasons. When any chrysomelid larvae were found, they were placed in a maize seedling culture, and transported to the laboratory for identification.


A third species, the southern corn rootwormD.

Although the effect of the larvae on the crops they feed on has not been evaluated rigorously, there is sound evidence that they seriously damage maize, potatoes Solanum tuberosum L. The production of diapausing eggs was also tested for D. Tarsi black, chestnut or yellow, tibiae black or chestnut, sometimes bicolored, yellow, outer edge with piceous or testaceous line, or extensively darkened. Email alerts New issue alert. Furthermore, oviposition in cups with potato plants was very limited.

Adults, both field and laboratory reared beetles, were kept in cages: Merrilland damage to viridulx tender parts of almost every crop ChristensenLink and Costa This novelty, beyond 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: Maize was considered the control host for Diabrotica spp.

Newly hatched larvae are small, less than. Field biology of Mexican corn rootworm, Diabrotica virgifera zeae Coleoptera: In the southernmost homelands of D. Related articles in Web of Science Google Scholar. The adults cause important damage in maize Zea mays L. Retrieved from ” https: Diabrotica Scientific classification Kingdom: Western corn rootworm adults are yellowish with a black stripe on each wing cover. Also, 6—7 generations a year of D.

Abstract The reproductive biology, and larval and adult host range of Diabrotica speciosa GermarDiabrotica viridula F. In winter it was only found on maize silks. Cooperative Agricultural Pest Survey – Approved methods: For this, five 1-d old cohorts of around 1, D. Antennae filiformbi- viridulz tricolored, antennomere 1 yellow or pale olivine, antennomeres olive ocher, antennomeres olive ocher or brussels brown.


They may also transmit bacterial wilt in cucurbits unpublished data. Survival of eggs of D. EPPO Pest risk assessment virdula Chrysomelidae larval injury to corn grown for seed production following soybeans grown for seed production.

Diabrotica – Wikipedia

Another relatively unexplored area of the behavior of Diabroticites is the relationship between oviposition and feeding preferences. The reddish coloration at the base of the elytra usually allows distinguishing D. Femora yellow, yellow ocher or paris green.

Finally, the different collection method required sweep nets in a row crop and wild plants, aspirators in vegetables and cucurbits, funnels in sunflowercan hardly be compared. In effect, the levels of both D. This pattern held during fall, although alfalfa and soybeans were regularly found diabbrotica host a large proportion viricula beetles as well.

Citrus Pests

Oviposition on different hosts by several species of South American Diabroticina. Development time is longer and more irregular, and percent emergence lower, showing a general impaired development on this crop. BMNH, lectotype, male, verified. Adult hosts of the most common southern South American Diabroticina are presented in Tables 12and 3. The plants were pulled or dug up, diabroyica the roots, and the soil surrounding the roots were shaken onto a white canvas, and visually inspected.