Heres a nicely marked oak tree pug at 20mm wingspan,personally i dont think wingspan measurements are the most accurate ie not always are their wings fully extended and often 1 wing is tucked slightly in a tad which could mean the differance of a mm or so,which might be crucial with some species of pug,maybe measuring the forewing from base to tip and width of body ! a bit faffy maybe!interesting to see what others think ?
