Genus
Oxygonia
23 species
Hidden in the bark of Andean and Amazonian trees, *Oxygonia* is one of the few tiger beetle genera to have abandoned the ground entirely for life in the forest canopy. These metallic, spotted beetles patrol bark surfaces by night, from foothills to cloud-forest elevations of 700–2,500 m. Their larvae develop within burrows excavated directly into bark — an extraordinary adaptation shared by very few cicindelids worldwide. Roughly twenty species are distributed across northern and central South America, from Colombia and Venezuela south to Bolivia and Brazil.
Diagnosis
DIAGNOSIS — *Oxygonia* Mannerheim, 1837. Body 9–14 mm, ovate; L:W ratio 2–3. Coloration metallic with pale elytral spots. Eyes large, protuberant. Labrum subquadrate. Pronotum with characteristic angular sculpture (diagnostic; etymological reference). Fully winged. Two pairs supraorbital setae; 2 scape setae; 1 pedicel seta. Strictly arboreal; nocturnal; larvae in bark burrows; Andean and Amazonian forest, 700–2,500 m. Separated from *Pentacomia* and *Ctenostoma* by combination of arboreal bark-dwelling habit, ovate body form, and pronotal angular sculpture.
Etymology
From Greek *oxýs* (sharp) + *gōnía* (angle, corner) — sharp-angled (pronotum or elytra).
Species (23)
Distribution map — GBIF occurrences
GBIF · © OpenStreetMap · © CartoDB
Overview
Hidden in the bark of Andean and Amazonian trees, *Oxygonia* is one of the few tiger beetle genera to have abandoned the ground entirely for life in the forest canopy. These metallic, spotted beetles patrol bark surfaces by night, from foothills to cloud-forest elevations of 700–2,500 m. Their larvae develop within burrows excavated directly into bark — an extraordinary adaptation shared by very few cicindelids worldwide. Roughly twenty species are distributed across northern and central South America, from Colombia and Venezuela south to Bolivia and Brazil.
Type species: Megacephala uncinata Brullé, 1838 [by monotypy (Mannerheim 1837 context)]
1. Wiesner, J. (2020) — checklist authority 2. Mannerheim, C.G. von (1837) — original genus description 3. Moravec, J. (2020) — Cicindelini Vol. 2 — definitive recent revision 4. Moravec, J. (2015) — Taxonomic revision within the Neotropical genus Oxygonia Mannerheim—1. Acta Musei Moraviae, Scientiae biologicae 100(2). [genus revision] 5. Duran, D.P. & Gough, H.M. (2020) — Validation of tiger beetles as distinct family (Cicindelidae) and reclassification within Coleoptera. Systematic Entomology 45(4): 723-729. DOI: 10.1111/syen.12440 [validates Cicindelidae as separate family] 6. Gough, H.M., Duran, D.P., Kawahara, A.Y. & Toussaint, E.F.A. (2018) — A comprehensive molecular phylogeny of tiger beetles (Coleoptera, Carabidae, Cicindelinae). Systematic Entomology 43(3): 567-586. DOI: 10.1111/syen.12324 [ML phylogeny of 328 taxa, 9 gene regions] 7. Wiesner, J. (2020) — Checklist of the Tiger Beetles of the World, 2nd edition (Verzeichnis der Sandlaufkäfer der Welt, 27. Beitrag zur Kenntnis der Cicindelidae). Winterwork, Borsdorf, 534 pp. [Authoritative current world checklist] 8. Various pre-1900 authors — Mannerheim (1837 Bull. Soc. Moscou), Gistel (1848-1857 Naturgeschichte / Vacuna), Hewitson (1862), Kolbe (1896 Stett. Ent. Z.), Fauvel (1882), Heller (1916 Stett. Ent. Z.). Most BHL-accessible. 9. Horn, W. (1908, 1910, 1915) — Coleoptera Adephaga, fam. Carabidae, subfam. Cicindelinae. In: Wytsman, P. (Ed.) Genera Insectorum, fascicles 82a, 82b, 82c. L. Desmet-Verteneuil, Bruxelles. BHL bibliography/45481 [foundational historical monograph of Cicindelidae, treating all genera known at the time] +7 citations · full list in paid edition
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Genera and Subgenera of Tiger Beetles
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