Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. The new insect is good news for gardeners, according to experts at the RHS, as they eat pests, rotting plant matter and mould, so could enhance and protect a greenhouse full of orchids.Andrew Salisbury, Principal Entomologist at the Royal Horticultural Society, told The Telegraph: “The webspinner is an addition to the UKs fauna which will have no negative effect on our gardens. “It may occur in glasshouses, where it will form webs and largely eat decomposing material, fungi and bacterial growths which is of course good news for gardeners and, by adding to the wealth of insects, only add to the enjoyment of plants and gardens. Basically a really interesting insect.”It is thought that there could be more examples in greenhouses in the UK, as their webbing means they can be easily confused for spiders.Mr Salisbury continued: “The confirmation of a new grouping of insects in Britain is evidence of the role that globalisation is and will continue to play on what is found in our gardens. It’s certainly an exciting discovery – if I’d been told I’d one day be adding an entirely new insect order to British fauna I wouldn’t have believed it.” A new insect order has been discovered in the UK for the first time in 100 years after shocked horticulturalists found a colony of webspinners in a glasshouse in Surrey.An insect order is a classification of a type of insect, for example beetles (Coleoptera), flies (Diptera), bees, wasps and ants (Hymenoptera), and butterflies and moths (Lepidoptera).While webspinners are usually only native to warmer climates such as the Mediterranean, scientists from the Royal Horticultural Society have discovered the first ever UK colony of them at their flagship garden in Wisley.They are intolerant to cooler climates and so do not occur naturally in Britain, and specialists have said they are likely to have been imported into the country via the plant trade.The colony of Aposthonia ceylonica – a species of webspinners – were discovered in the glasshouse and will now join 24 other insect orders found in the UK.Webspinners have up to 2.5cm long brown bodies and are the only insects that produce a silk webbing from their front legs, living in tunnels constructed from it to protect themselves from the elements and predators.The species found in the UK is about 1 cm long and lives on the hanging roots of tropical plants like orchids and bromeliads.