The Illustrated Atlas of Insectoids

Reading this book adds journal bestiary entries for Armored arachasae and Venomous arachasae.

Journal entry

 * Arachas. Monst. of the —>Brachyoarachindaesubg., subtype—>viperhexapoda. Lives mainly in boggy terrain, but also in caves and abandoned mines. Hierarchical caste struct., w/ highly spec. members. master of —>mimicry, many specimens highly poisonous. Invasive species, immigrated from the south. Must be fought with silver, ideally freshly coated with insectoid —>oil.