Device of categorised collection insect

The utility model provides a device of categorised collection insect, including the barrel, its characterized in that the barrel is established the segmentation section of thick bamboo of cavity in bya plurality of head and the tail swing joint and is formed, and the interval is equipped with the different a plurality of filter screens in aperture on the barrel, and barrel top and end are equipped with upper and lower through -hole respectively, and upper and lower through -hole is connected with respectively, lower hose, and the outer port of top hose is entry, lower hose's outer end connection gasbag or air cock. Can inhale the barrel with the insect in a certain region, then carry out the screening of big or middle or small different size kind insects in proper order through the screencloth in different apertures, make the insect classification of big or middle or small size kind save in the segmentation section of thick bamboo of correspondence. Let the experimenter need not to classify to the insect agai