Earth's biodiversity, formed over millions of years, is one of humanity's greatest treasures. Among the most numerous, from all the animal kingdom on Earth, stand out the invertebrates which, constituting over 80% of the total number of described species, are present in all types of habitats and on all continents. Nowadays, more than 2 million of species are known in the world fauna and about 15 thousand species are known to be present on the territory of the Republic of Moldova, the collembola and some orders of insects, especially Coleoptera, Lepidoptera, Hemiptera, Odonata, some families ...