Jumping-bristletails
Guides
Machilidae
Jumping Bristletails
Machilidae is a family of wingless insects in the order Archaeognatha, commonly known as jumping bristletails. Adults measure 7–20 mm in body length, with elongated cylindrical bodies covered in overlapping scales and three long terminal filaments. They possess large contiguous compound eyes, a humped thorax, and enlarged hind legs that enable rapid jumping when disturbed. The family contains approximately 250–450 described species with a nearly cosmopolitan distribution, primarily associated with moist, sheltered microhabitats including rocky shorelines, leaf litter, and rock crevices.
Mesomachilis
jumping bristletails
Mesomachilis is a genus of jumping bristletails in the family Machilidae, first described by Silvestri in 1911. The genus contains approximately six described species distributed across North America, including the western United States, Canada, and Mexico. These primitive insects belong to the order Archaeognatha, one of the earliest diverging lineages of living insects.
Pedetontus
jumping bristletails
Pedetontus is a genus of jumping bristletails (order Archaeognatha) in the family Machilidae, first described by Silvestri in 1911. The genus contains approximately 10 described species, with additional cryptic diversity identified through molecular studies, particularly in China where 17 species have been documented. Species are wingless and retain numerous ancestral characteristics including monocondylous mandibles and well-developed abdominal appendages. Recent mitogenomic studies indicate that current morphological classification within the genus requires revision due to paraphyly and cryptic species complexes.