About 10% is introduced from Europe, including the commonly encountered Phalangium opilio.

The best known is Phalangium opilio.

Examples of this suborder include Hadrobunus grandis (Sclerosomatidae), Phalangium opilio and Dicranopalpus ramosus (Phalangiidae).

Genetic analysis performed on a modern Phalangium opilio specimen found a suppressed gene that, if active, would generate a second pair of eyes at the lateral location, providing independent evidence that four eyes is the ancestral condition.

Phalangium opilio is "the most widespread species of harvestman in the world", occurring natively in Europe, and much of Asia, and having been introduced to North America, North Africa and New Zealand.