An aspirator is a device used for capturing small insects. The basic design of an aspirator includes a vial (usually plastic) and a tight fitting cork, rubber stopper, or other cap with two metal tubes running through it. One of the tubes has a rubber hose several inches long connected to it and a piece of fine mesh affixed to the other end of the tube inside of the vial. To collect insects, one sucks air through the rubber hose and points the other tube at the insect and the insect is sucked into the vial. Because the end of the tube that is used to draw air through has mesh over its end, insects in the vial are not sucked into ones mouth.