Genus
Pentacomia
22 species
Hidden in the forest canopy of Central and South America, *Pentacomia* beetles spend their lives on bark and branches, hunting by night. This small Neotropical genus, described by Bates in 1872, comprises 12 species ranging across the Amazon basin and into southern Brazil and Bolivia. Unlike most tiger beetles that patrol sun-baked ground, *Pentacomia* is a committed arboreal specialist, with larvae tunneling through bark rather than soil. The genus is remarkable within Cicindelidae for its unique protarsal morphology: the first four protarsomeres are not dilated in males, a condition found in no other member of the family.
Diagnosis
DIAGNOSIS — *Pentacomia* Bates, 1872. Body 8–13 mm, elongate-cylindrical (L:W ratio 2–3), fully winged. Coloration metallic. Eyes medium. Labrum transverse. Nocturnal; strictly arboreal, on bark and branches in Neotropical forests; larvae in bark burrows. Protarsomeres 1–4 of male NOT dilated — uniform protarsal form in both sexes; unique within Cicindelidae and Odontocheilina. Separated from *Oxygonia* and *Odontocheila* by this protarsal character combined with arboreal bark-dwelling ecology and characteristic five-tuft setation pattern. Type species: *Cicindela ventralis* Dejean, 1825.
Etymology
From Greek *pénte* (five) + *kómē* (hair, tuft) — "five-tufted", referring to specific setae arrangement.
Species (22)
Distribution map — GBIF occurrences
GBIF · © OpenStreetMap · © CartoDB
Overview
Hidden in the forest canopy of Central and South America, *Pentacomia* beetles spend their lives on bark and branches, hunting by night. This small Neotropical genus, described by Bates in 1872, comprises 12 species ranging across the Amazon basin and into southern Brazil and Bolivia. Unlike most tiger beetles that patrol sun-baked ground, *Pentacomia* is a committed arboreal specialist, with larvae tunneling through bark rather than soil. The genus is remarkable within Cicindelidae for its unique protarsal morphology: the first four protarsomeres are not dilated in males, a condition found in no other member of the family.
Type species: Cicindela ventralis Dejean, 1825 [by subsequent designation]
1. Wiesner, J. (2020) — checklist authority 2. Bates, H.W. (1872) — original genus description 3. Moravec, J. (2020) — Cicindelini Vol. 2 4. Moravec, J. & Huber, R.L. (2015) — Taxonomic revision—13. Mesacanthina stat. nov. and Pentacomia subgenera elevated to generic status. Acta Musei Moraviae, Scientiae biologicae 100(1). 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. Bates, H.W. — multiple papers in Annals & Magazine of Natural History, Cistula Entomologica, and Biologia Centrali-Americana, Coleoptera I (1881-1884). BHL bibliography/730 (Biologia) + various [open access] 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] +9 citations · full list in paid edition
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Genera and Subgenera of Tiger Beetles
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