beetles, and pselaphid beetles. The biggest concern is not the ant itself, but the bait used to treat them because this can prove fatal. Stock Island tree snails ("Orthalicus reses") are extinct in the wild; predation by red imported fire ants is believed to be the major factor in the snail's extinction. Overall, red imported fire ants prefer specific arthropods to others, although they attack and kill any invertebrate that cannot defend itself or escape. Arthropod biodiversity increases once red imported fire ant populations are either reduced or eradicated.