How would you describe the emergence holes created by flat-headed borers?

The emergence holes created by flat-headed borers are oval shaped and typically about 3/8 inch wide. This characteristic shape is a key identifier for these pests, as the oval nature of the holes reflects the body shape of the borer itself. Flat-headed borers, which belong to the family Buprestidae, are known for their flat bodies that facilitate boring into wood. When they emerge from their larval stage, they create these distinctive oval holes that serve as an entry point for identification of their presence. Understanding the specific size and shape of these holes helps in accurately diagnosing infestations and implementing control measures effectively.

Other options like circular, square, or irregular shapes do not accurately represent the emergence holes associated with flat-headed borers, indicating there might be confusion with either other types of wood-boring insects or misinterpretation of their signs.