Jumping-bristletail
Guides
Petridiobius arcticus
Arctic Bristletail
Petridiobius arcticus is a species of jumping bristletail, an ancient lineage of wingless insects belonging to the order Archaeognatha. As a member of the family Machilidae, it represents one of the most primitive insect groups, retaining characteristics of early insect evolution. The species has a broad distribution spanning multiple continents, occurring in both the Palearctic and Nearctic regions. Despite its wide geographic range, detailed biological information remains limited.
Trigoniophthalmus
Trigoniophthalmus is a genus of jumping bristletails in the family Machilidae, order Archaeognatha. The genus was erected by Verhoeff in 1910 and contains approximately 11-14 described species distributed across the Palaearctic region. Taxonomic revision in 2019 established two subgenera: Trigoniophthalmus s. str. and Silvestrius subgen. nov. Species within this genus are distinguished by morphological features of the compound eyes, ocelli, and ovipositor structure.