"Blackflies - Defenders of the Wilderness". Short sleeve, 100% cotton, pre-shrunk. Black print on green background.  A portion of the proceeds from the sale of this shirt is donated to the Maine Blackfly Breeders Association, which raises money for local charities. Liberty Graphics.
 
If you like this, check out the Blackfly Tea Towel. And, for some fascinating storytelling about adventures in the Maine woods, see Bald Eagles, Bear Cubs and Hermit Bill.