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Additionally 1702 insect species (28% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. [ 2 ]
The IUCN also lists 15 insect subspecies as vulnerable. No subpopulations of insects have been evaluated by the IUCN. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild".
In the November 2016 issue of Science Advances, a research article claims there are serious inconsistencies in the way species are classified by the IUCN. The researchers contend that the IUCN's process of categorization is "out-dated, and leaves room for improvement", and further emphasize the importance of readily available and easy-to ...
As of July 2016, the International Union for Conservation of Nature (IUCN) listed 195 critically endangered insect species, including 46 which are tagged as possibly extinct. [1] [2] Of all evaluated insect species, 3.2% are listed as critically endangered. The IUCN also lists two insect subspecies as critically endangered.
Rainforests can be generally classified as tropical rainforests or temperate rainforests, but other types have been described. Estimates vary from 40% to 75% of all biotic species being indigenous to the rainforests. [1] There may be many millions of species of plants, insects and microorganisms still undiscovered
The Hercules beetle (Dynastes hercules) is a species of rhinoceros beetle native to the rainforests of southern Mexico, Central America, South America, and the Lesser Antilles. It is the longest extant species of beetle in the world, and is also one of the largest flying insects in the world.
One in ten known species in the world lives in the Amazon rainforest. [47] This constitutes the largest collection of living plants and animal species in the world. [48] The region is home to about 2.5 million insect species, [49] tens of thousands of plants, and some 2,000 birds and mammals.
Insect biodiversity accounts for a large proportion of all biodiversity on the planet—over half of the estimated 1.5 million organism species described are classified as insects. [ 1 ] [ 2 ] A pie chart of described eukaryote species, showing just over half of these to be insects