A species of flying beetle.
1849. The dor-bugs hummed through the tent.Parkman, The Oregon Trail, p. 42. (N.E.D.)
1872. All plain enough, I do not doubt, to those accustomed to handling dor-bugs and squash-bugs and such undesirable objects of affection to all but naturalists.Holmes, The Poet at the Breakfast-Table, chap. ix.