Genus
Caledonica
18 species
Hidden in the red-clay landscapes of New Caledonia, *Caledonica* is one of only two cicindelid genera confined entirely to this Pacific archipelago. Comprising around eighteen species, these metallic-hued beetles prowl compacted laterite and dry clay pans under cover of darkness. Their depressed, elongate bodies and large protuberant eyes are hallmarks of a lineage shaped by island isolation. *Caledonica* shares its remote homeland with the closely related genus *Caledonomorpha*, together forming a remarkable endemic radiation in Melanesia.
Diagnosis
DIAGNOSIS — *Caledonica* Chaudoir, 1861. Body medium, 9–18 mm, depressed-elongate habitus. Head wider than pronotum; eyes large, protuberant. Pronotum subquadrate, sides weakly rounded. Elytra elongate; ground color metallic bronze, greenish, or coppery. Labrum transverse. Fully winged. Nocturnal. Substrate: compacted laterite, clay pan, dry clay. Distinguished from *Caledonomorpha* by more robust build and wider head relative to pronotum. No other confusion genera recorded within the New Caledonian fauna.
Etymology
From Latin *Caledonia* (the Roman name for Scotland; later applied to New Caledonia in the Pacific where this endemic genus lives).
Species (18)
Distribution map — GBIF occurrences
GBIF · © OpenStreetMap · © CartoDB
Overview
Hidden in the red-clay landscapes of New Caledonia, *Caledonica* is one of only two cicindelid genera confined entirely to this Pacific archipelago. Comprising around eighteen species, these metallic-hued beetles prowl compacted laterite and dry clay pans under cover of darkness. Their depressed, elongate bodies and large protuberant eyes are hallmarks of a lineage shaped by island isolation. *Caledonica* shares its remote homeland with the closely related genus *Caledonomorpha*, together forming a remarkable endemic radiation in Melanesia.
Type species: Caledonica lacordairei Chaudoir, 1860 [by subsequent designation]
1. Wiesner, J. (2020) — checklist authority 2. Chaudoir, M. de (1860) — original genus description 3. Pearson, D.L. & Vogler, A.P. (2001) — Pacific biogeographic context 4. 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] 5. 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] 6. 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] 7. Chaudoir, M. de — Bulletin de la Société Impériale des Naturalistes de Moscou (multiple volumes 1843-1865). BHL bibliography/4951 [open access] 8. 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] 9. Kurdna (2016) — Acta Entomologica Musei Nationalis Pragae Vol 56 (2) (p.567-628) 2016, Revision of the genus Caledo +2 citations · full list in paid edition
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Genera and Subgenera of Tiger Beetles
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