Larva and female beetle of the round headed apple tree borer. From The Encyclopedia of Practical Horticulture A Reference System of Commercial Horticulture; Editor in Chief GRANVILLE LOWTHER; copyright 1914 (therefore in public domain) ; http://books.google.com/books?id=A6oMAAAAYAAJ&pg=PA510&img=1&zoom=3&hl=en&sig=ACfU3U3NfoTZBzbjky3nMfEMgptnO03EKw&ci=69%2C182%2C406%2C317&edge=0