21. Most however are rather drab, some resembling house flies . 22. "' Fly spray "'is a chemical insecticide that comes in an house flies and wasps. 23. Jumping spiders attack an adult house fly from afar, presumably to maintain the element of surprise. 24. FLIES-HEAR _ House flies hear with their wings. 25. A juvenile hormone binding protein from the house fly and its possible relationship to insecticide resistance. 26. They are a dull red and about the length of a smallish house fly , but more slender. 27. My house is invaded by house flies . 28. A captive individual accepted termites, mosquito, house flies , ant eggs for about 45 days and was released. 29. They are not house flies, but rather cluster flies and do not carry disease as house flies do. 30. In its adult stage, the screwworm is a fly about twice the size of the common house fly .
