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Teratopactus vittatus

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Teratopactus vittatus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Cucujiformia
Family: Curculionidae
Genus: Teratopactus
Species:
T. vittatus
Binomial name
Teratopactus vittatus
Synonyms
  • Naupactus vittatus Mannerheim, 1833

Teratopactus vittatus is a species of broad-nosed weevil in the beetle family Curculionidae, subfamily Entiminae, and tribe Naupactini. It is endemic to Brazil and belongs to the genus Teratopactus, which is distributed across the Chacoan and Parana subregions of the Neotropics and has expanded to the Cerrado.[1][2]

The species was originally described as Naupactus vittatus by Mannerheim in 1833 and was transferred to the genus Teratopactus in 2006, based on morphological characteristics, including the structure of the ovipositor and humeri, which align with the diagnostic traits of the genus.[3]

Distribution

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T. vittatus has been recorded in the Brazilian states of Bahia, Minas Gerais, and Rio de Janeiro. Specific collection sites include Encruzilhada, Ibiá, Poços de Caldas, and Serra do Caraça.[3] These areas fall within the Cerrado and Atlantic Forest biomes.

Recent records, until April 2025, shared by citizen scientists indicate that this species is being encountered mostly in Brasília and in the Ibitipoca State Park.[4]

Morphology

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This species is fairly large, with females reaching about 16 to 18.5 mm in length. Its back is mostly bare, showing a dark brown color, and it can be recognized by two pairs of yellowish stripes along the wing covers.[3]

The humeri are prominent and armed with a strong tooth, and the pronotum is markedly convex with fine granulation. The frons of the head is longitudinally channeled, and the antennae are slender with a distinctly fusiform club. Unlike some related species, the flanks of the pronotum in T. vittatus generally lack prominent teeth.

Taxonomy and systematics

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According to a cladistic analysis using 36 morphological characters, T. vittatus is closely related to T. nodicollis, forming a well-supported clade within the genus. Both species share derived traits such as the presence of dorsal baculi in the female genitalia.[3]

Ecology and host plants

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There is limited ecological information available specifically for T. vittatus. The genus generally inhabits savanna and forest mosaics, such as those found in the Cerrado biome. Only T. nodicollis has been associated with agricultural crops and native plants, and no specific host plants have been confirmed for T. vittatus to date.[5][6]

References

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  1. ^ Morrone, Juan J. (1999). "The species of Entiminae (Coleoptera: Curculionidae) ranged in America South of the United States". Anales del Instituto de Biología serie Zoología (in Spanish). 70 (2). ISSN 0368-8720.
  2. ^ Shapiro, Arthur M. (September 2002). "Biogeografía de América Latina y el Caribe. Manuales & Tesis SEA, Volumen 3. By Juan J Morrone. Published by the Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo, Oficina Regional de Ciencia y Tecnología para América Latina y el Caribe, UNESCO, and the Sociedad Entomológica Aragonesa, Zaragoza (Spain). EUR 15.00 (paper). 148 p; ill.; no index. ISBN: 84– 922495–4-4. [In Spanish.] 2001". The Quarterly Review of Biology. 77 (3): 354–355. doi:10.1086/345248. ISSN 0033-5770.
  3. ^ a b c d Guadalupe del Río, M.; Lanteri, Analía A.; Guedes, Jerson V. C. (2006). "Taxonomic revision and cladistic analysis of Teratopactus Heller (Coleoptera:Curculionidae)". Invertebrate Systematics. 20 (5): 585. doi:10.1071/is05047. ISSN 1445-5226.
  4. ^ "Teratopactus vittatus". iNaturalist. Retrieved 2025-04-24.
  5. ^ Guedes, Jerson Vanderlei Carús. Identificação e bioecologia dos curculionídeos-das-raízes dos citros de São Paulo e Minas Gerais (Thesis). Universidade de Sao Paulo, Agencia USP de Gestao da Informacao Academica (AGUIA). doi:10.11606/t.11.2019.tde-20191220-143210.
  6. ^ d'A., AG (1968). Quarto catálogo dos insetos que vivem nas plantas do Brasil: seus parasitos e predadores.

Further reading

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