0000000000549756
AUTHOR
Ragusa Ernesto
Occurrence of Centrouropoda almerodai and Uroobovella marginata (Acari: Uropodina) phoretic on the Red Palm Weevil in Malta
The unwanted introduction of the Red Palm Weevil (RPW) coincides with the spread in Malta of two species of Uropodid mites associated with this weevil. Usually, adult RPW carry phoretic forms of C. almerodai which are attached to the underside of elytra, and U. marginata that prefers exposed surfaces of sternum, pygidium, head and legs. These mites use adult RPW to abandon dead palms and to colonize newly infested host-plants. Their role as plant pests is however negligible. Even the plant pathogen conidia, Curvularia which are carried by the mites, seem unable to germinate in palms under laboratory conditions. Both Centrouropoda almerodai and Uroobovella marginata are established in the Ma…
SPECIE ALIENE DI RECENTE INTRODUZIONE IN ITALIA: STATO DELL’ARTE
Authors report a review of alien Tetranychidae and Phytoseiidae species recorded in the last half a century in Italy. Six tetrany- chid species are considered up to now as introduced in Italy, named Oligonychus bicolor (Banks, 1894), Panonychus citri (McGregor, 1916), Oligonychus ilicis (McGregor, 1917), Tetranychus evansi Baker & Pritchard, 1960, Oligonychus perseae Tuttle, Baker & Abbatiello, 1976 and Tetranychus ludeni Zacher, 1913. Among Phytoseiidae, the neotropical Phytoseiulus per- similis Athias-Henriot is probably the oldest exotic species in Italy, followed by Neoseiulus californicus (McGregor). The most recent introduction regards Amblydromalus limonicus Garman & McGr…