Named after amateur Malaysian naturalist, Datuk Chan Chew Lun, only six specimens are known, all from the state of Sabah in Borneo. Very little is known about its biology, but it may live in the canopy of the rainforest, making it especially hard to find. However, there is no evidence, and the related "Phobaeticus kirbyi" is found on low growing vegetation alongside rainforest paths. 