We’ve been noticing little brown moths appearing mysteriously in our living room for the last few weeks, so nondescript that we didn’t even attempt to identify them before releasing them outside. They often appeared by the door so I was starting to suspect that they might be connected with the bumblebee nest behind the now defunct air-brick immediately beneath this corner of the room.
They’re bee moths, Aphomia sociella, the larva of which eat debris such as old wax cells in the nests of bees, which is a useful service for the bee except they will also eat bees’ brood. They pupate in tough silky cocoons, which can be found tucked away as a mass.
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