A very small, immature Trapdoor Spider (Myrmekiaphila spp.) of undetermined gender. Younger Myrmekiaphila tend to have a more well-defined "trapdoor" on their burrows than adults, but this seems to depend more on the existing terrain of where their burrows are located and the material available to them. For example, I have noticed that nearly all Myrmekiaphila burrows that are located in areas of hard-packed dirt with little leaf litter tend to not have trapdoors at all (they conceal their burrows with random chunks of dirt when it becomes daylight), wheras Myrmekiaphila that make their home in more fertile ground that is abundant in leaf litter/straw tend to have very well-defined trapdoors.