Defra are asking for the public's help to find any citrus longhorn
beetles ( Anoplophora chinensis ) that may be in the UK.
Citrus Longhorn Beetle
The citrus longhorn beetle is a quarantine listed pest that could
pose a threat to trees in the UK. A small number of adult beetles,
believed to be citrus longhorns were found emerging from a potted
Japanese acer/maple tree in a private garden in Shropshire early
in July. One of these beetles was caught, photographed and then
released before the beetles' identity was discovered. Last year
similar sightings were made in Hampshire and Lancashire.
The citrus longhorn beetle originates in Asia, but it has been
moving around the world in internationally traded bonsais and young
trees. There is currently an outbreak of this pest in northern
Italy. Although predominately a pest of citrus and apples, the
beetle can also attack a number of other trees including beech,
hazel, oak, maple and birch. The larvae (grubs) of the beetle are
the most damaging. They bore through the trunks, upper roots and
branches of host trees leaving them susceptible to wind damage
and disease. Later, perhaps 2 years after the first attack, the
larvae will pupate and then emerge in the late summer as adult
insects which will quickly seek out new host trees for the females
to lay their eggs in slits they chew in the bark. The long period
between egg laying and adult emergence explains how this pest can
be moved from one country to another in young plants.
The beetles are large, 21-37mm long (about 1-1.5 inches), excluding
the antennae, and black with variable white markings on their backs.
Their antennae (horns) are longer than their bodies and are black
with white or light blue coloured bands. Late July to early September
is thought to be the time of year when this pest is most likely
to be seen.
NFU issues warning as heat wave sparks crop blazes
green vehicle plan good news, says NFU
at Major Climate Change Youth Summit