This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Common Spiders U.S. . en Tegenaria longitarsus Coras juvenilis back of female epigynum palpus of male seen from above head of Tegenaria medicinalis Coras medicinalis head of Tegenaria longitarsus Tegenaria complicata Cicurina arcuata female enlarged four times epigynum male palpus The Common Spiders of the United States