News Animals Some cannibal pirate spiders trick their cousins into ‘walking the plank’ A Costa Rican arachnid uses a hunting strategy that exploits the way other spiders build webs The spider Gelanor siquirres (shown) has a seemingly unique way of hunting other arachnids, tricking them into walking right into a trap. G. Barrantes, L. Segura-Hernández and D. Solano-Brenes/Animal Behaviour 2023 Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Elizabeth Anne Brown September 18, 2023 at 8:00 am A Costa Rican pirate spider lives up to the family name: It tricks closely related orb weaver spiders into “walking the plank,” right to their doom.