With the corona epidemic, the moths were also able to multiply unimpeded in the buildings and now they are becoming a nuisance.
Written by Lina Wolfel
Insects have benefited from the corona epidemic in the UK and have become a nuisance in some museums and historic buildings. By 2020, their number will have increased by eleven percent over the previous year, according to an analysis by the National Trust.
“There is no doubt that locking is good for insects,” Conservator Hillary Jarvis said in a National Foundation press release. “Relative silence, darkness and the absence of harassment from visitors and staff have provided the same conditions for larvae and adults since March,” it continues. Infection with fabric moths and mold is particularly strongly increased.
In the fight against cloth moths, the system is now testing two-stage processes in which both wasps and pheromones are used. Trichogramma evanesis is one of the natural arch-enemies of the wasp cloth moth. It lays its own eggs on the moth’s eggs so that their larvae die before hatching. In addition, pheromones are sprayed, which mimic female attraction. Male moths are also said to be confused and prevented from mating. “This approach is biologically and sustainably effective because it inhibits the life cycle of insects,” a spokesman for the National Foundation told SZ.
Tests with the dual system are initially carried out at Flicking Hall, an East English mansion in Norfolk. One of the dangerous items was a tape showing the victory of the Russian ruler Peter the Great Sweden and Sarina Catherine the Great gave to the then owner of the garden. The first results of the testing phase are expected in the fall of this year, when the breeding season of the fabric moth is over.