Genus
Calochroa
46 species
*Calochroa* Hope, 1838 is a large Oriental tiger beetle genus of roughly 35 species, recognised by their strikingly brilliant metallic coloration in blues, greens, coppers, and violets. Distributed across South Asia, continental Southeast Asia, and the Sundaland archipelago, these beetles favour open dry habitats and forest-edge clearings on bare soil. Unusually among cicindelines, *Calochroa* species are nocturnal and associated with arboreal bark surfaces, with larvae developing in bark burrows. The genus has been identified as polyphyletic, with lineages allied respectively to *Lophyra* and to *Sophiodela*.
Diagnosis
DIAGNOSIS — *Calochroa* Hope, 1838 Body 9–18 mm, robust-cursorial, elongate-oval. Head wider than pronotum; eyes medium, protuberant. Pronotum subquadrate to slightly transverse. Elytra brilliantly metallic — deep blue, green, copper, violet, or gold — with pale maculate spots. Labrum transverse; marginal labral setae ≥10 (D05). Fully winged (macropterous). Nocturnal; arboreal bark-dweller; larvae in bark burrows. Endophallus simply curved (M02=1/2; cf. *Calomera* M02=3). Separation from *Lophyra*: sister-group relationship recovered phylogenetically but distinguished by labral setal count and endophallic structure. Separation from *Sophiodela*: second clade of *Calochroa* recovered as sister; distinguished by overall size and metallic coloration pattern.
Etymology
From Greek *kalós* (beautiful) + *chróa/chroia* (colour, skin) — "beautiful colour", referring to brilliantly coloured dorsum.
Species (46)
Distribution map — GBIF occurrences
GBIF · © OpenStreetMap · © CartoDB
Overview
*Calochroa* Hope, 1838 is a large Oriental tiger beetle genus of roughly 35 species, recognised by their strikingly brilliant metallic coloration in blues, greens, coppers, and violets. Distributed across South Asia, continental Southeast Asia, and the Sundaland archipelago, these beetles favour open dry habitats and forest-edge clearings on bare soil. Unusually among cicindelines, *Calochroa* species are nocturnal and associated with arboreal bark surfaces, with larvae developing in bark burrows. The genus has been identified as polyphyletic, with lineages allied respectively to *Lophyra* and to *Sophiodela*.
Type species: Cicindela octogramma Chevrolat, 1845 [by subsequent designation (Hope 1838 context)]
1. Wiesner, J. (2020) — checklist authority 2. Hope, F.W. (1838) — original genus description 3. Pearson, D.L., Wiesner, J., Uniyal, V.P., Acciavatti, R.E. & Anichtchenko, A. (2020) — Field Guide India — recent revisions 4. Naviaux, R. (multiple papers) — SE Asian Calochroa coverage 5. Putchkov, A.V. & Arndt, E. (1997–2010) — Treatments in Catalogue of Palaearctic Coleoptera (Löbl & Smetana eds., Vol. 1). 6. Löbl, I. & Smetana, A. (eds.) (2003) — Catalogue of Palaearctic Coleoptera, Vol. 1: Archostemata–Myxophaga–Adephaga. Apollo Books, Stenstrup, 819 pp. [ISBN 87-88757-73-0] 7. Hope, F.W. (1838) — The coleopterist's manual, part the second. London, H.G. Bohn. [BHL: biodiversitylibrary.org/bibliography/9229] [original description of Calochroa] 8. Moravec, J. (2023) — Calochroa miroklichai sp. nov., a new species from Thailand with rectification of different concepts of Calochroa tritoma. Zootaxa 5285(2): 369-388. DOI: 10.11646/zootaxa.5285.2.7 9. Naviaux, R. & Pinratana, A. (2004) — The Tiger Beetles of Thailand (Coleoptera, Cicindelidae). Sunpriting, Brothers of St. Gabriel in Thailand, 177 pp. +13 citations · full list in paid edition
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Genera and Subgenera of Tiger Beetles
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