US Patent 8484887 Multi-species insect trap with separated plumes

An insect trap for targeting multiple species with an entrapment chamber having an entry structure attached to one end of the entrapment chamber and a lower lid closing a second end. The entry structure is configured to generate a first attractant plume, and includes an annular lid, a tapered guide, a plurality of members slidably engaging the lid, and an attachment fixture. The entry structure also has means for retaining a first attractant. The lower lid includes means for retaining a second attractant and a plurality of apertures, such that a second attractant plume may be generated that is spaced apart from the first attractant plume. The lower lid may include entry apertures to provide insect ingress to the entrapment chamber, and may further include a second tapered guide. The lower lid may alternatively comprise micropores that permit egress of the second attractant.