Birch Leaf Miner -

The adult birch leaf miner is a tiny, black, fly-like insect approximately 1/8 inch long. Unlike true flies, it is a sawfly—a primitive type of stingless wasp.

The birch leaf miner ( Fenusa pusilla ) is a small, invasive sawfly native to Europe that has become a widespread pest of birch trees throughout North America. While primarily an aesthetic concern, chronic infestations can significantly weaken trees, making them vulnerable to more lethal threats like the bronze birch borer. Biology and Identification birch leaf miner

: The destructive stage consists of yellowish-white, legless larvae that grow up to 1/4 inch long. The adult birch leaf miner is a tiny,