Trigoniophthalmus

Species-level identification relies on detailed examination of: the line of contact between compound eyes; structure of paired ocelli; labial palp morphology; leg and tarsus structure (including spine-like setae); urocoxite IX form; ovipositor division count; and male paramere shape. The genus is distinguished from the related genus Coryphophthalmus by comparative analysis of these morphological features.

Palaearctic distribution including the Balkan Peninsula (Serbia, Albania, Bulgaria, Greece), Caucasus region (Abkhazia, North Ossetia-Alania), European Russia, Central Asia (Uzbekistan, Kazakhstan), Krasnodar Territory, Switzerland, and the Azores. GBIF records also indicate presence in Vermont, USA, though this may represent introduced populations or identification records.

Oviposition occurs via a divided ovipositor; the number of ovipositor divisions varies between species and serves as a diagnostic character. Other life cycle details are not documented.

• CoryphophthalmusClosely related genus within Machilidae; distinguished by morphological differences in eye contact line, ocelli structure, labial palps, legs, urocoxites IX, ovipositor, and male parameres

• jumping bristletail
• Archaeognatha
• Machilidae
• Palaearctic
• wingless insect
• primitive insect

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Taxonomic review of the genera Trigoniophthalmus Verhoeff and Coryphophthalmus Verhoeff (Archaeognatha, Machilidae) with descriptions of two new species of the genus Coryphophthalmus from Serbia