This species is darkly colored with an overall shiny quality, causing them to blend in extremely well with the freshly solidified lava that makes up their habitat.

[3] Caconemobius fori is endemic to recently cooled (on the order of decades) lava flows on the big island of Hawai'i.

[4] Once enough time has passed for any significant plant life to colonize a lava flow, C. fori disappears from the habitat.

[3] As C. fori is one of the first arrivals after a lava flow is formed, the species relies entirely on windblown debris for food, including plant material and sea foam.

[3] While C. fori can be found at night on lava fields without any equipment, it is apparently especially attracted to cheese, which is used by researchers to bait pitfall traps in order to study this species.