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Anoplophora glabripennis

By |2016-12-21T22:30:35+08:00December 19th, 2016|Trees & Insects|

Anoplophora glabripennis, Asia longhorn beetle

Host and distribution

The most destructive non-native insect attacking US trees in the Asian longhorn beetle Anoplophora glabripennis. As with the closely related Citrus longhorn beetle (A. chinensis), A. glabripennis attacks a wide range of Asian, North American and European tree species (esp. maples, chestnuts, sycamores and poplars). Asian longhorn originated from China, […]

Bursaphelenchus xylophilus

By |2016-12-21T22:29:53+08:00December 19th, 2016|Trees & Diseases|

Bursaphelenchus xylophilus, pine wood nematode

Host and distribution

Pine wood nematode B. xylophilus is spread by Monochamus beetles and with the movement of infested live or sawn wood. B. xylophilus can live in the wood of all species of conifers other than Thuja, Tsuga and Taxus although North American pines in the nematodes’ natural distribution are not […]

Candidatus Liberibacter asiaticus

By |2016-12-21T22:30:51+08:00December 19th, 2016|Trees & Diseases|

Bacterium, Candidatus Liberibacter asiaticus, citrus greening, also known as huanglongbing

Host and distribution

Ca. L. asiaticus is a bacterial pathogen originating in Asia that has recently been introduced into the Americas (1). It causes citrus greening, which now presents an unprecedented threat to citrus production worldwide. It is transmitted by the phloem-feeding citrus psyllid insects (Diaphorina citri). The […]

Odontotermes formosanus

By |2016-12-21T22:03:01+08:00December 18th, 2016|Trees & Termites|

Appearance of Soldier

Around 6mm long. The head is pale orange and oval-shaped. Mandibles are curved and sharply pointed, with a distinct tooth on the inner margin of the left mandible.

Habit

Build large underground nests. Build soil covers and keep fungus combs in their nests like M. barneyi.

Citation: Hong Kong Food and Environmental Hygene Department […]

Macrotermes barneyi

By |2016-12-21T22:03:22+08:00December 18th, 2016|Trees & Termites|

Appearance of Soldiers

With two classes of soldiers, the major soldiers (7.5-8mm long) and minor soldiers (5-6.5mm long). Major soldiers are with brownish red heads while those of minor soldiers are paler. Mandibles are black, long and saber-like

Habit

Build underground nests. May also build large earth mounds to house their nests. Soil particles and saliva are used […]

Procapritermes sowerbyi

By |2016-12-21T22:03:45+08:00December 18th, 2016|Trees & Termites|

Appearance of Soldier

Around 7mm in length. The head is rectangular and pale yellow. The body is white in colour. Mandibles are long, slender and slightly asymmetrical.

Habit

Feed on humus in soil. Little is known about this species and other habits are thought to be similar to those of C. fuscotibialis.

Citation: Hong Kong Food and […]

Capritermes fuscotibialis

By |2016-12-21T21:59:44+08:00December 18th, 2016|Trees & Termites|

Appearance of Soldiers

The head is rectangular and yellow to light brown in colour. Mandibles are characteristically asymmetrical.

Habit

Feed on humus in soil. Usually found inhabiting parts of nests built by other larger termite species.

Citation: Hong Kong Food and Environmental Hygene Department – Pest Control Newsletter, Termites

Reticulitermes fukienensis

By |2016-12-21T21:59:58+08:00December 18th, 2016|Trees & Termites|

Appearance of soldiers

Around 4.5mm long. The rectangular head is yellow in colour. Mandibles are relatively short and stout with dark tips.

Habit

Live in old tree stumps and buried timber. May also infest moist structural timber in buildings.

Citation: Hong Kong Food and Environmental Hygene Department – Pest Control Newsletter, Termites

Coptotermes formosanus

By |2017-01-01T21:22:03+08:00December 18th, 2016|Trees & Termites|

Appearance of soldiers

Around 5mm long. The head is pear-shaped and pale orange in colour. Mandibles are large, pointed and dark.

Habit

Inhabit dead tree branches and moist structural timber in domestic environment. May damage a wide range of items of wood origin. The most commonly encountered pest species in Hong Kong.

Citation: Hong Kong Food and […]

Cryptotermes brevis

By |2016-12-21T21:56:27+08:00December 18th, 2016|Trees & Termites|

Appearance of Soldiers

Around 5 mm long. The head is large, cylindrical and dark. The body is creamy white. Mandibles are small as compared with those of other species.

Habit

Live in a variety of structural timber away from ground in domestic environment. Found in dead tree branches occasionally.

Citation: Hong Kong Food and Environmental Hygene Department […]

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