books.google.co.in - Find what you're looking for with Peterson Field Guides—their field-tested visual identification system is designed to help you differentiate thousands of unique species accurately every time. Detailed descriptions of insect orders, families, and many individual species are illustrated with 1,300 drawings...http://books.google.co.in/books/about/A_field_guide_to_insects.html?id=BkG5T2tg6B4C&q=oi+head&utm_source=gb-gplus-shareA field guide to insects
