Microdipoena guttata is a species of true spider in the family Mysmenidae. It is found in a range from the United States to Paraguay.
The family Mysmenidae comprises very small spiders, many of which are poorly studied due to their size and cryptic habitats.
Microdipoena guttata is extremely small, consistent with other mysmenid spiders:
Due to their small size, detailed identification often requires microscopic examination, especially of genital structures.
The species is associated with humid, sheltered microhabitats, including leaf litter, low shrubs, and ground vegetation, and forest understory environments. Like other members of Mysmenidae, it constructs very small, irregular orb webs or reduced web structures close to the ground. They prey on tiny insects and micro-arthropods, capturing them using fine, delicate silk webs.
Microdipoena guttata is known from parts of Europe, with records showing sightings in parts of Central and Eastern Europe, and regions with temperate forest ecosystems. Exact distribution is not comprehensively documented, reflecting the limited sampling of very small arachnid species.