How many kinds of spiders are there?
About 38,000 species of spiders belonging to 3526 genera of 109 families are known to science. Many spider species are not yet known to science, particularly in the tropics. Some of the most diverse and abundant spider families include jumping spiders (Family Salticidae, 4889 species), the sheet-web spiders (Family Linyphiidae, 4214 species) the orb weaving spiders ( Family Araneidae, 2817 species), the comb-footed spiders (Family Theridiidae, 2199 species), the wolf spiders (Family Lycosidae, 2261 species), and the crab spiders (Family Thomisidae, 2023 species).
