A device for monitoring and catching insects from the culicidae population, comprising: a first container provided with a first plurality of elements (13, 111) for attracting the insects; at least one second container, positioned inside said first container, and resting on it by means of a plurality of tie rods (2', 2", 2"'), comprising an open upper base and a lower base, said second container being provided with a second plurality of elements (21, 22) for attracting the insects; at least one device for generating an air flow, which is positioned at the lower base of said second container so as to suck in the insects close to said device, from the outside towards the inside of said second container through said open upper base; at least one perforated bag, arranged in correspondence of said open upper base, which extends to said device for generating an air flow, for monitoring and catching the insects sucked inside the device, said device being characterized in that said first container has a cylindrical shape having a lateral surface, an open upper base and a closed lower base, and a plurality of through holes (111a, 111b, 111c, 111d) for the electrical and liquid supply are made on said lateral surface; in that it comprises a further olfactory attractant for attracting the insects belonging to the species Culex pipiens, Anopheles spp, Aedes koreicus, Aedes japonicus, Aedes aegypti; in that an element of said first plurality of elements (13, 111) is a first olfactory attractant, which is a solution comprising water and an organic compound of natural origin; in that said closed lower base of said first container contains said solution; in that said solution can be introduced into said first container through one of said holes of said plurality of through holes (111a, 111b, 111c, 111d); in that said second container has a lateral surface, which is preferably cylindrical in shape, on which a housing is obtained; in that an element of second plurality of elements (21, 22) is a second chemical olfactory attractant and said device further comprises a release system in which said second chemical olfactory attractant is absorbed, the release system being positioned in said housing; in that said second chemical olfactory attractant is a compound of substances which simulate the group of chemical substances given off in human skin perspiration and breathing; in that a housing for a sound attractant is obtained on the lateral surface of said second container; and in that an element of said second plurality of elements (21, 22) is a sound attractant, which is an electronic device which reproduces the sound generated by the beating wings of the females ready to mate and is electrically powered by means of a cable passing through at least one hole of said plurality of through holes (111a, 111b, 111c, 111d). a first container provided with a first plurality of elements (13, 111) for attracting the insects; at least one second container, positioned inside said first container, and resting on it by means of a plurality of tie rods (2', 2", 2"'), comprising an open upper base and a lower base, said second container being provided with a second plurality of elements (21, 22) for attracting the insects; at least one device for generating an air flow, which is positioned at the lower base of said second container so as to suck in the insects close to said device, from the outside towards the inside of said second container through said open upper base; at least one perforated bag, arranged in correspondence of said open upper base, which extends to said device for generating an air flow, for monitoring and catching the insects sucked inside the device, said device being characterized in that said first container has a cylindrical shape having a lateral surface, an open upper base and a closed lower base, and a plurality of through holes (111a, 111b, 111c, 111d) for the electrical and liquid supply are made on said lateral surface; in that it comprises a further olfactory attractant for attracting the insects belonging to the species Culex pipiens, Anopheles spp, Aedes koreicus, Aedes japonicus, Aedes aegypti; in that an element of said first plurality of elements (13, 111) is a first olfactory attractant, which is a solution comprising water and an organic compound of natural origin; in that said closed lower base of said first container contains said solution; in that said solution can be introduced into said first container through one of said holes of said plurality of through holes (111a, 111b, 111c, 111d); in that said second container has a lateral surface, which is preferably cylindrical in shape, on which a housing is obtained; in that an element of second plurality of elements (21, 22) is a second chemical olfactory attractant and said device further comprises a release system in which said second chemical olfactory attractant is absorbed, the release system being positioned in said housing; in that said second chemical olfactory attractant is a compound of substances which simulate the group of chemical substances given off in human skin perspiration and breathing; in that a housing for a sound attractant is obtained on the lateral surface of said second container; and in that an element of said second plurality of elements (21, 22) is a sound attractant, which is an electronic device which reproduces the sound generated by the beating wings of the females ready to mate and is electrically powered by means of a cable passing through at least one hole of said plurality of through holes (111a, 111b, 111c, 111d).