In May 2014, early thousand cankers disease (TCD) symptoms were observed on English walnuts (Juglans regia) in Italy. Canopies showed yellowing, wilting and dieback of the youngest twigs and a number of small brown cankers. Longitudinal and radial sections sampled through the cankers revealed grey...

The invasive redbay ambrosia beetle, Xyleborus glabratus, is the primary vector of Raffaelea lauricola, a symbiotic fungus and the etiologic agent of laurel wilt. This lethal disease has caused severe mortality of redbay (Persea borbonia) and swampbay (P. palustris) trees in the southeastern USA,...

The five-spined bark beetle, Ips grandicollis, is an exotic pest in Australia that preferentially attacks stressed pine trees, including Pinus radiata D. Don, but it can also attack healthy trees. The beetle has been present in Australia for 70 years, feeding principally on logging debris, with...

Thousand cankers disease (TCD) of walnut is responsible for widespread mortality of black walnut (Juglans nigra) in the United States since the mid-1990s. The disease is caused by the fungus Geosmithia morbida (Ascomycota, Hypocreales), vectored by the walnut twig beetle Pityophthorus juglandis...

Euplatypus parallelus (Fabricius, 1801), a species of ambrosia beetle native to South and Central America, is now present almost throughout the Oriental region, and in parts of Wallacea and New Guinea. It was probably accidentally imported to the region by human agency in timber or unseasoned wood...

The redbay ambrosia beetle (Xyleborus glabratus Eichhoff) is an invasive pest and vector of the pathogen that causes laurel wilt disease in Lauraceous tree species in the eastern United States. This insect uses olfactory cues during host finding, but use of visual cues by X. glabratus has not been...

The polyphagous shot hole borer (PSHB) is an invasive ambrosia beetle that forms a symbiosis with a new, as-yet-undescribed Fusarium sp., together causing Fusarium dieback on avocado and other host plants in California and Israel. In California, PSHB was first reported on black locust in 2003 but...

Redbay ambrosia beetle, Xyleborus glabratus Eichoff, is an exotic species to North America vectoring a deadly vascular wilt disease of redbay [Persea borbonia (L.) Spreng], swampbay [P. palustris (Raf.) Sarg.], avocado (P. americana Mill.), and sassafras [Sassafras albidum (Nutt.) Nees]. Xyleborus...

In September 2009, specimens of Ips sexdentatus were captured using black cross vane traps in an old stand of Pinus halepensis Miller at Dekani in the submediterranean ecological region of Slovenia. Twenty-four per cent of them carried phoretic mites, and six taxa of mites were collected directly...

In Oman, the bark beetle Hypocryphalus mangiferae is closely associated with trees affected by mango sudden decline disease caused by Ceratocystis manginecans. Although it has previously been assumed that this beetle plays a role in the dispersal of the pathogen, this has not been established...