New communal roosting tradition established through experimental translocation in a Neotropical harvestman

‘Tradition’ has been invoked to explain instances in which animals aggregate repeatedly in the same locations for no apparent reason, but alternative explanations, such as cryptic habitat selection, are difficult to rule out. Distinguishing among these hypotheses requires field experiments. We studied a species of harvestman (Prionostemma sp.) that forages solitarily at night and forms […]