A trapping device and method for capturing and monitoring the existence and behavior of crawling insects, such as bed bugs, is provided. The trapping device has a textured two-dimensional surface with one or more triangular entrance areas, where one of the triangular sections functions as a base, one or more wing sections, connected to either one the base or to another wing section by a neck； and a collecting area connected to one or more wing sections by a bridge. The trapping device can further include a support structure, and can be enclosed in a case with one or more entrances. The trapping device can also comprise a catching area that can optionally include an adhesive for immobilizing the insects.
