Abstract

GONSEBATT, Gustavo G.; VISCARRET, Mariana M.  and  LIETTI, Marcela M.. Whitefly species (Hemiptera: Aleyrodidae) on wild and cultivated plants in the horticultural region of Rosario, Santa Fe, Argentina. Rev. Soc. Entomol. Argent. [online]. 2012, vol.71, n.1-2, pp.125-136. ISSN 0373-5680.

Whiteflies of economic importance are polyphagous, being able to develop on a large number of cultivated and spontaneous plants. We recorded the whitefly species on vegetable and flower crops and the wild plants associated, under greenhouse and field conditions, for two years. We observed two species: Trialeurodes vaporariorum (Westwood) and the Bemisia tabaci complex (Gennadius). T vaporariorum was recorded on 24 plant species (11 families), 12 and 8 of which are new hosts in Argentina and in the world, respectively. The B. tabaci complex was recorded only on flower production systems, on 19 plant species (11 families), 14 and 7 of which are new hosts in Argentina and in the world, respectively. The crops Glycine max (L.) and Chrysanthemum morifolium Ramat., the wild species Amaranthus blitum L., Amaranthus quitensis Kunth, Conyza bonariensis (L.), Galinsoga parviflora Cav., Sonchus oleraceus L. and Wedelia glauca (Ortega) O. Hoffm. ex Hicken were hosts of both species. The only parasitoid recorded was Eretmocerus californicus near corni Haldeman (Hymenoptera: Aphelinidae) from T. vaporariorum. This study, which is the first systematic survey of host plants in the region, intends to provide a better knowledge of the range of whiteflies host plants in Argentina.

Keywords : Bemisia tabaci; Trialeurodes vaporariorum; Host plants; Vegetable crops; Flower crops.

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