Diplurids

Diplurids are a small order of hexapods, comprising only about 200 species. They are characterized by their primitive wingless bodies, which are often elongated and flattened. A distinctive feature of diplurids is the presence of two cerci, or tail-like appendages, at the posterior end of their abdomen. These cerci can vary in form, sometimes being long and filamentous, while at other times they are shorter and chelate (pincer-like).

Diplurids are typically found in damp, sheltered environments such as leaf litter, soil, under rocks, and in decaying wood. They are detritivores or scavengers, feeding on organic matter. Their life cycle generally involves incomplete metamorphosis, with young resembling smaller versions of the adults.

The order is divided into two main families: Japygidae and Projapygidae. Japygids are notable for their strong, pincer-like cerci, which they use for defense and sometimes for capturing prey. Projapygids, on the other hand, usually have more filamentous cerci. Diplurids are considered among the most primitive hexapods, offering insights into the early evolution of this diverse group of arthropods. While not of significant economic importance, their presence in soil ecosystems contributes to nutrient cycling.