books.google.co.in - Witness the dazzling mid-air copulations of slugs, the transvestism of dung beetles, the "lovedarts" of snails, the pre- and post-nuptial snack-smearing strategies of millipedes and centipedes, the dance of the scorpions, and spiders that tie their mates down with "bridal veils" of silk. Splendidly illustrated...http://books.google.co.in/books/about/The_encyclopedia_of_land_invertebrate_be.html?id=sDpagGxJw3AC&utm_source=gb-gplus-shareThe encyclopedia of land invertebrate behaviour