argentatum, choice and no-choice tests were performed in 20 on a total of 36 non-target closely related species. The impact on the reproduction of French broom was studied in Southern France and revealed that it could effectively reduce the number of viable seeds by 18.8%, but also increased the number of aborted seeds by 10% within the attacked pods. argentatum to develop in stems and pods appears not to have been recorded in Coleoptera and rare in other phytophagous insects. argentatum in stem galls ranged from 34 to 40 days at mean 23.67 ± 2.43☌. Mating couple of Lepidapion argentatum (Photo by RFH Sforza) Research componentsįirst, our research is focused on biology and specificity of the weevil Lepidapion argentatum. Lepidapion argentatum is both a stem gall maker and a seed feeder. The honeydew covers the foliage and causes sooty mold growth. Brentidae).Īdult of the French broom psyllid (Photo by RFH Sforza)Īrytinnis hakani is a sap sucking insect that impacts French broom by intense feeding pressure and the production of high levels of honeydew. Foreign exploration in the native range (Spain, France, Italy, Greece) by collecting pods, beating tray samples and threshing of leaves, allowed the identification of two major phytophagous arthropod candidates: Arytinnis hakani (Longinova, 1972, Hemiptera Psyllidae) and Lepidapion argentatum (Gerstaecker, 1854, Col. Introduced as an ornamental plant to many parts of the world, French broom is currently a major invader in several countries including the USA and Australia Introduced in the 19th century as an ornamental plant it is currently invasive in California and Australia.
French Broom Project Lead scientist: RFH Sforza Presentation & contextįrench broom, Genista monspessulana (L.) LAS Johnson (Fabaceae) is a perennial woody shrub, native to the Mediterranean region commonly associated with regeneration in fire-prone environments.īlooming French broom (Photo by RFH Sforza)
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