Earwigs and cockroaches (order Blattodea) can be found both on bottom boards and inner covers. These insects look somewhat alike, have similar lifestyles, and are commonly mistaken for one another. I have always classified them in my mind as transients, however your question motivated me to consult my copy of Honey Bee Pests, Predators and Diseases. One of the sources cited in this excellent reference states that earwigs “. . . may pierce cappings and spoil comb sections with excreta, food fragments, and the skins of nymphs.” The book makes similar observations concerning roaches, with the addition of a warning about odor problems. Another source notes that earwigs may carry honey bee diseases, including European foulbrood. It seems that from now on I may have to consider both species as pests rather than transients. As with other pests, the best way to control them is to maintain strong colonies. However, last Summer, I had a new colony die out and I stored the hive bodies which contained some nice drawn comb. There must have been a dozen roaches or earwigs in the boxes. After learning more about them, I may be quicker next time to squash these pests with my hive tool.-
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