Threatened arthropods United States, and IUCN Red List for international purposes. Only a tiny fraction of the planet's endangered arthropods are formally recognized as such, as no one has ever evaluated the conservation status of the vast majority of arthropod species. It is difficult to estimate the total number of endangered arthropod species, since many of the taxa themselves have not been recorded. For example, in North America the estimated number of insect species exceeds 163,000, of which only about two thirds are taxonomically known. An even greater discovery awaiting, over 72 percent of North American arachnids are yet to be named
Frog legs since the late 18th century. In the late 19th century, the French restaurateur, Auguste Escoffier, tried to rename them "nymphs" in a vain attempt to sell them to London diners. In recent decades, adventurous British chefs have introduced frog leg dishes to their menus, notably Heston Blumenthal whose recipes have included frog blancmange. Frog legs Frog legs are one of the better-known delicacies of French and Chinese cuisine. The legs of edible frogs are also consumed in other parts of the world, including Vietnam, Thailand, Indonesia, Northern Italy, the Alentejo region of Portugal, Spain, Albania, Slovenia, Romania, the northwest Greece