Genus
Dilatotarsa
8 species
*Dilatotarsa* Dokhtouroff, 1882 is a small Oriental genus of eight tiger beetles distributed across mainland Southeast Asia, from southern China and Myanmar through Thailand, Laos, and Vietnam to the Malay Peninsula. These medium-sized, metallic beetles are nocturnal hunters of bare sandy soils, clay-loam flats, and riverine margins. The genus is immediately recognizable by the conspicuously widened male protarsomeres — the feature that inspired the name *Dilatotarsa*, from the Latin for "dilated tarsi."
Diagnosis
DIAGNOSIS — *Dilatotarsa* Dokhtouroff, 1882 Body 7–12 mm, elongate-cursorial. Head wider than pronotum; eyes large, protuberant. Pronotum subquadrate. Elytra elongate; ground color metallic bronze to greenish; maculation with humeral lunule, median band, and apical element. Labrum transverse. Activity nocturnal. Substrate: bare sandy soil, clay-loam, or riverine. DIAGNOSTIC: male protarsomeres conspicuously dilated (widened), morphometrically distinct from all related Cicindelina. No confusion genera recorded.
Etymology
From Latin *dilatatus* (dilated, widened) + *tarsus* — "dilated tarsi" (modified male protarsi).
Species (8)
Distribution map — GBIF occurrences
GBIF · © OpenStreetMap · © CartoDB
Overview
*Dilatotarsa* Dokhtouroff, 1882 is a small Oriental genus of eight tiger beetles distributed across mainland Southeast Asia, from southern China and Myanmar through Thailand, Laos, and Vietnam to the Malay Peninsula. These medium-sized, metallic beetles are nocturnal hunters of bare sandy soils, clay-loam flats, and riverine margins. The genus is immediately recognizable by the conspicuously widened male protarsomeres — the feature that inspired the name *Dilatotarsa*, from the Latin for "dilated tarsi."
Type species: Cicindela cancellata Dejean, 1825 [by subsequent designation (Dokhtouroff 1882)]
1. Wiesner, J. (2020) — checklist authority 2. Dokhtouroff, V.S. (1882) — original genus description 3. Naviaux, R. (multiple papers) — regional Cicindelina coverage 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. Dejean, P.F.M.A. — Species général des coléoptères de la collection de M. le comte Dejean. 6 volumes, Paris 1825-1838. BHL bibliography/8863 [open access] 8. Dokhtouroff, V.A. — Horae Societatis Entomologicae Rossicae 17 (1882), 18 (1883). BHL bibliography/41060 [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] +8 citations · full list in paid edition[CassolaBrzoska2008] Cassola, F. & Brzoska, D. (2008) — Collecting notes and new data on the tiger beetle fauna of Sulawesi, Indonesia, with descriptions of fourteen new taxa. Cicindela 40(1-4): 1–110. [68 spp. collected, 13 n.sp. + 1 n.ssp.; habitat data, syntopy records, >5,000 specimens; Sulawesi endemic fauna 80.1%, 116 total spp.]
Living Book · World Monograph 2026
Genera and Subgenera of Tiger Beetles
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