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1 April 2007 Parasitic Hymenoptera Fauna on Agromyzidae (Diptera) Colonizing Weeds in Ecological Compensation Areas in Northern Italian Agroecosystems
Giovanni Burgio, Alberto Lanzoni, Paolo Navone, Kees Van Achterberg, Antonio Masetti
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Abstract

Parasitoids (Hymenoptera) associated with agromyzid leafminers (Diptera: Agromyzidae) were studied in three rural farms located in northern Italy. The parasitoids were reared from mined foliage of weeds growing in field margins. We reared 998 Hymenoptera specimens, representing five families, 23 genera, and 53 species, from leafminers infesting weeds. Eulophidae was the most abundant family (67.64%), followed by Braconidae (28.86%), Eucoilinae (1.40%), Tetracampidae (1.40%), and Pteromalidae (0.7%). Braconids was the most species rich family, accounting for 28 species; eulophids were represented by 19 species, pteromalids by four species, and eucoilins and tetracampids by one species each. The dominant parasitoid was the eulophid Pediobius metallicus (Nees), representing 18.17% of the total, followed by Diglyphus isaea (Walker) (12.73%), and Neochrysocharis formosa (Westwood) (10.82%). The most abundant braconid parasitoid was Dacnusa maculipes Thomson (9.62%). More than 80% of parasitoids were recovered from 10 plant species: Cirsium arvense (L.) Scopoli, Plantago lanceolata L., Sonchus asper (L.) Hill, Papaver rhoeas L., Picris echioides L., Lactuca serriola L., Myagrum perfoliatum L., Ranunculus velutinus Tenore, Arctium lappa L., and Medicago sativa L. The retention and the management of wild plants within field margins can be crucial tools to enhance the populations of biological control agents of agromyzids and to conserve rare parasitic wasp species.

Giovanni Burgio, Alberto Lanzoni, Paolo Navone, Kees Van Achterberg, and Antonio Masetti "Parasitic Hymenoptera Fauna on Agromyzidae (Diptera) Colonizing Weeds in Ecological Compensation Areas in Northern Italian Agroecosystems," Journal of Economic Entomology 100(2), 298-306, (1 April 2007). https://doi.org/10.1603/0022-0493(2007)100[298:PHFOAD]2.0.CO;2
Received: 21 November 2005; Accepted: 26 November 2006; Published: 1 April 2007
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KEYWORDS
Agromyzidae
conservation biological control
ecological infrastructures
hymenopteran parasitoids
weeds
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