Published February 27, 2026 | Version v1

Scione distincta

  • 1. Instituto Nacional de Pesquisas da Amazônia (INPA), Programa de Pós-Graduação em Entomologia (PPGEnt / INPA), Manaus, AM, Brazil.
  • 2. Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Biodiversidade, Manaus, AM, Brazil.
  • 3. Facultad de Ciencias Naturales, Universidad de Guayaquil, Guayaquil, Ecuador.
  • 4. Laboratório de Entomologia, Universidade Federal do Tocantins (UFT), Porto Nacional, TO, Brazil.

Description

Scione distincta (Schiner, 1868)

(Fig. 25A–D)

Diclisa distincta Schiner, 1868: 102; Kertész, 1900: 14 (cat.); Ricardo, 1900a: 104 (NHMUK spp.); Hunter, 1900: 135 (cat.); Enderlein, 1925: 300 (tax.).

Scione distincta; Ricardo, 1902: 435 (NHMUK spp.); Kertész, 1908: 149 (cat.); Surcouf, 1919: 221 (Ecuador spp.); 1921: 114 (comm.); Kröber, 1930: 169 (rev.); 1934: 233 (cat.); Stone, 1944: 128 (Venezuela spp.); Bequaert & Renjifo-Salcedo, 1946: 62 (Colombia spp.); Fairchild, 1967c: 246 (Schiner’s type); 1971: 26 (cat.); Moucha, 1976: 40 (cat.); Fairchild & León, 1986: 105 (Ecuador spp.); Fairchild & Burger, 1994: 49 (cat.); Chainey et al., 1994: 326 (tax.); Coscarón & Papavero, 2009: 52 (cat.).

Type locality. “ South America ” (Venezuela).

Diagnosis. Body yellowish-brown. Thorax with three yellowish longitudinal stripes. Wing slightly smoky, brown veins with faint brown spots on crossveins. Femora brown, tibiae and tarsi orange.

Redescription. Female. Body length: 10 mm, wing length: 10.7 mm.

Head. Frons divergent below (divergence index 0.6), frontal index 1.7. Frons without patch. Vertex dark brown with dense and long black setulae, ocellar triangle not very prominent, ocelli dark brown. Frons brown and undercoat with yellowish pruinosity, frons with dense long black setulae. Parafacial brown with yellowish pruinosity. Gena covered with yellowish pruinosity and dense long yellowish setulae. Clypeus yellowish brown with yellowish pruinosity and long dense black setulae and some yellowish setulae, clypeal index 0.6. Antenna yellow-orange. Scape and pedicel with yellowish pruinosity and long dense black setulae. Flagellum with last segment darkened. First segment of the palpus dark brown with dense and long yellowish and black setulae; second segment orange on the posterior margin and with short black setulae. Proboscis shiny dark brown, about 2x the height of the frons.

Thorax. Scutum and scutellum black. Scutum with short dense yellow and black setulae. Scutellum with long dense black and yellow setulae. Scutum with yellowish longitudinal stripes. The median stripe is not very evident and does not extend to the posterior margin of the scutum. Sublateral and lateral stripes connected by a yellowish stripe at the transverse suture. The sublateral stripes extend to the posterior margin of the scutum, where they become wider. Notopleuron with tuft of long dense black setulae. Anepisternum, katepisternum and anepimeron with long dense yellowish setulae and some black setulae. Postalar callus with a tuft of dense long yellowish setulae. Coxae and trochanters dark brown with long dense black setulae. Femora with long dense black and yellowish setulae, proximal portion dark brown and distal portion orange. Tibiae and tarsi orange. Tibiae with short dense yellow setulae. Tarsi with short dense yellow setulae in the proximal portion and short dense black setulae in the distal portion. Wing slightly smoky, brown veins with faint brown spots on crossveins. Abdomen. Tergites yellow with sparse black and yellowish setulae, denser black setulae on tergites 6 and 7. Tergite 1 with brown anterior margin. Tergite 2 with an integument median dark brown patch. Tergites 1 to 6 with slightly dense posterior bands of whitish-yellow setulae and a tuft of whitish-yellow setulae on the middle of posterior margin. Sternites with sparse, long yellowish setulae. Sternites 1 to 6 with slightly dense posterior bands of whitish setulae.

Distribution. Venezuela, Colombia, Peru *.

Type material examined. Holotype, ♀, deposited at the NMW (examined through photographs).

Additional material examined. 1 ♀, “ Peru, CA[jamarca], San Ignacio, Tabaconas, 2549 m, 5º11’56.7”S, 79º20’21.1”O, 13–15.x.2017, P. Sánchez ” (UNMSM).

Comments. In the specimen examined the frons is a little more divergent than in the type and the thoracic stripes are more evident, and besides that, the setulae of the abdomen of the holotype are denser than in the specimen seen here, which has lost many setulae.

Notes

Published as part of Oliveira, Lia Pereira, Henriques, Augusto Loureiro, Buestán, Jaime & Krolow, Tiago Kütter, 2026, Taxonomic revision of the Neotropical genus Scione Walker, 1850 (Diptera: Tabanidae), pp. 1-133 in Zootaxa 5761 (1) on page 44, DOI: 10.11646/zootaxa.5761.1.1, http://zenodo.org/record/19190310

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Linked records

Additional details

Biodiversity

Collection code
NMW , UNMSM
Event date
2017-10-13
Verbatim event date
2017-10-13/15
Scientific name authorship
Schiner
Kingdom
Animalia
Phylum
Arthropoda
Order
Diptera
Family
Tabanidae
Genus
Scione
Species
distincta
Taxon rank
species
Type status
holotype
Taxonomic concept label
Scione distincta (Schiner, 1868) sec. Oliveira, Henriques, Buestán & Krolow, 2026

References

  • Schiner, J. R. (1868) Diptera. In: [Wullerstorf-Urbair, B. von (in charge)], Reise der o ¨ sterreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wu ¨ llerstorf-Urbair. Zoologischer Theil. Zweiter Band. 1. Abtheilung. B. K. Gerold's Sohn, Wien, vi + 388 pp.
  • Kertesz, K. (1900) Catalogus tabanidorum orbis terrarium universi. Termeszetrajzi Fuzetek, 23 (Appendix), 1-80.
  • Ricardo, G. (1900 a) Notes on the Pangoninae of the family Tabanidae in the British Museum Collection. The Annals and Magazine of Natural History, Series 7, 5 (25), 97-121. https://doi.org/10.1080/00222930008678247
  • Hunter, W. D. (1900) A catalogue of the Diptera of South America, Part 2. - Homodactyla and Mydiadae. Transactions of the American Entomological Society, 27, 121-155.
  • Enderlein, G. (1925) Studien an blutsaugenden Insekten. I. Grundlagen eines neuen Systems der Tabaniden. Mitteilungen aus dem Zoologischen Museum in Berlin, 11 (2), 255-409.
  • Ricardo, G. (1902) Further notes on the Pangoninae of the family Tabanidae in the British Museum collection. The Annals and Magazine of Natural History, Series 7, 9 (54), 424-438. https://doi.org/10.1080/00222930208678613
  • Kertesz, K. (1908) Catalogus dipterorum hucusque descriptorum. Vol. III. Museum Nationale Hungaricum, Budapestini, 366 pp.
  • Surcouf, J. M. R. (1919) Dipteres. Brachyceres piqueurs (Tabanidae). In: Mission du Service Geographique de l'Armee pour la mesure d'un arc de meridien equatorial en Amerique du Sud sous le controle scientifique de l'Academie des Sciences, 1899 - 1906. Tome 10. Entomologie. - Botanique. Fascicule 2. - Opiliones. - Dipteres. - Myriapodes. Guathier-Villars et Cie, Paris, pp. 217-233.
  • Krober, O. (1930) Die sudamerikanischen Arten der Gattung Scione Wlk. (= Rhinotriclista End.) (Dipt.). Stettiner Entomologische Zeitung, 91, 141-174.
  • Stone, A. (1944) Some Tabanidae from Venezuela. Boletin de Entomologia Venezolana, 3 (3), 125-138.
  • Bequaert, J. & Renjifo-Salcedo, S. (1946) The Tabanidae of Colombia (Diptera). Psyche, 53 (3 - 4), 52-86. https://doi.org/10.1155/1946/40437
  • Fairchild, G. B. (1967 c) Notes on Neotropical Tabanidae (Diptera). X. The species described by J. R. Schiner and others. Pacific Insects, 9 (2), 243-256.
  • Moucha, J. (1976) Horseflies (Diptera: Tabanidae) of the World. Synoptic Catalogue. Acta Entomologica Musei Nationalis Pragae, 7, 1-319.
  • Fairchild, G. B. & Leon, L. A. (1986) Lista provisional de Tabanidae (Diptera) del Ecuador. Publicaciones del Museo Ecuatoriano de Ciencias Naturales, Serie Revista, 7, 97-122.
  • Fairchild, G. B. & Burger, J. F. (1994) A catalog of the Tabanidae (Diptera) of the Americas south of the United States. Memoirs of the American Entomological Institute, 55, 1-249.
  • Chainey, J. E., Hall, M. J. R., Amayo, J. L. & Bettella, P. (1994) A preliminary checklist and key to the genera and subgenera of Tabanidae (Diptera) of Bolivia with particular reference to Santa Cruz Department. Memorias do Instituto Oswaldo Cruz, Rio de Janeiro, 89, 321-345. https://doi.org/10.1590/S0074-02761994000300007
  • Coscaron, S. & Papavero, N. (2009) Catalogue of Neotropical Diptera. Tabanidae. Neotropical Diptera, 16, 1-199.