Its Latin name refers to Logan Canyon, Utah, where the species was first discovered.

The spider was discovered by two Utah State University doctoral students, Stephanie Cobbold and Lori Spears, while performing research on spider communities in Logan Canyon.

[1] Theridion logan is approximately 2 millimetres (0.079 in) long, with the female being slightly wider and longer than the male.

[2] The spider has a black and white round body, with chevron stripes on its abdomen and spots on its top.

[1] Although these spots are popular recreational areas, the spider does not seem to be affected by the presence of humans.