14/08/2026
... AM PLATFORM --- THE SPECIES OF EXOTIC TERRESTRIAL GASTROPOD MOLLUSCS WITH THE LARGEST SPATIAL DISTRIBUTION KNOWN IN BRAZIL/ AS ESPÉCIES DE MOLUSCOS GASTRÓPODES EXÓTICOS TERRESTRES COM A MAIOR COBERTURA ESPACIAL TERRITORIAL CONHECIDA NO BRASIL !!!!!!!!!!!!!!!!!!
/.. Among the thirty-two (32) species of exotic shell-bearing terrestrial gastropods (snails) currently recorded in Brazil's vast territory (Machado et al. 2026: Table S1), the following three (3) in particular stand out due to the extensive spatial coverage they have achieved / ... Entre as trinta-e-dois (32) espécies de gastrópodes exóticos terrestres portadores de co**ha (caracóis) atualmente inventariados/ contabilizados no vasto território do Brasil (Machado et al. 2026: Table S1), as seguintes três (3) em particular destacam pela sua ampla cobertura espacial territorial alcançada:
A -- Giant african snail ACHATINIDAE "Lissachatina fulica (Bowdich, 1822)",
- Detection (year): 1988 (Agudo-Padrón, V***o & Saalfeld, 2013: 90), via "Curitiba city", Paraná State/ PR, by means of the “diplomatic pouch” of an official from the Paraná State Secretariat of Agriculture during his trip to Indonesia, with two (2) specimens (breeding stock) having been clandestinely landed in Brazil and handed over to the then-President of HELIPAR—the Paraná Snail Breeders' Association, "Ferenc Polena".
- Category: Invasive (Iv) - Machado et al. (2026: 4)*
- Scatter Vector: Historical commercial operations aiming shellfish farming. Today, additional handling, transport & trade of agricultural and gardening products
- Brazilian State coberture: ... All & DF (todos)
- Obs.: Confirmed presence in other Neotropical neighboring & general South American countries
B -- Asian tramp snail or Little garden snail CAMAENIDAE "Bradybaena similaris (Férussac, 1822),
- Detection (year): 1835 (Darrigran et al. 2019: 5), marking the first report of a non-native mollusc introduced into the country
- Category: Invasive (Iv) - Machado et al. (2026: 4)*
- Brazilian State coberture: ... Confirmed in twenty (20) states and DF, including Pará-PA, Rondônia-RO & Pernambuco-PE ... with the remaining 8 states awaiting confirmation: AC, AM, AP, RR, TO, SE, CE & AL
- Scatter Vector: Handling, transport & trade of agricultural and gardening products
- Obs.: Confirmed presence in other Neotropical neighboring & general South American countries
C -- Indian horntail snail ARIOPHANTIDAE "Tanychlamys indica (Godwin-Austen, 1883)",
- Detection (year): 2017 (Agudo-Padrón & Luz 2017) -- additionally, see Agudo-Padrón (2025, 2026 a: 4, 2026 b: 9-10, 2026 c: 11-Fig. 1d)
- Category: Established (Et) - Machado et al. (2026: 4)**
- Brazilian State coberture: ... Confirmed in twenty-three (23) states and DF ... with the remaining 3 states awaiting confirmation: Roraima - RR, Piaui - PI & Sergipe - SE. Spreading rapidly, it is today the second (2nd) species of exotic snail with the largest known spatial coverage in Brazil
- Scatter Vector: Handling, transport & trade of agricultural and gardening products
- Obs.: Offering a significant point of differentiation to date -- Species "Restricted" only to the territory of Brazil in South America (... "non-confirmed presence" in other Neotropical countries of the continent)
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*An established non-native species that causes at least one ecological, socioeconomic, or health-related impact (Machado et al. 2026: 4).
**A non-native species that completes its life cycle in the natural environment and shows signs of population growth but without apparent impacts (Machado et al. 2026: 4).
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REFERENCES:
~ Agudo-Padrón, A.I. & Luz, J.S. da. 2017. First confirmed occurrence record of a indo-asiatic land snail in Brazil and the Americas. Minerva, 1(1): 19-27. https://repositorio.ues.edu.sv/server/api/core/bitstreams/523120e7-dd62-4a7d-8b4c-2d4d77ebb3ac/content?fbclid=IwY2xjawHHAOlleHRuA2FlbQIxMAABHZqgQO_RZ9hL1tCHHS3IiHbyVC_XghIXo2HYC8rfh-ope0CwWBe6_Nq5Qg_aem_xtBawpSTgn81WTHU2p3BNA
~ Agudo-Padrón, A.I. 2025. The invasive indo-asiatic horntail snail ARIOPHANTIDAE Tanychlamys indica (Godwin-Austen, 1883) in Santa Catarina State/ SC, Brazil: general status of its knowledge seven (7) years after the first report of their discovery in the Brazilian territory and the earth’s American ecozones. Brazilian Journal of Animal and Environmental Research, 8(1): 1-15. https://ojs.brazilianjournals.com.br/ojs/index.php/BJAER/article/view/77003/53542
~ Agudo-Padrón, A.I. 2026 a. Considerations about the inventory of "non-native molluscs" reported for Santa Catarina State/ SC, central southern brazil region, in relation to new comprehensive brazilian general contribution. Brazilian Journal of Animal and Environmental Research, 9(2): 1-11. https://ojs.brazilianjournals.com.br/ojs/index.php/BJAER/article/view/87707/59570
~ Agudo-Padrón, A.I. 2026 b. Observations about a non-native (exotic invasive) specimen of pulmonate snail Ariophantidae Tanychlamys indica (Godwin-Auster, 1883) isolated in artificial lock-down conditions on Santa Catarina state/ SC, Central Southern Brazil, with additional general informations. Brazilian Journal of Animal and Environmental Research, 9(2): 1-13. https://ojs.brazilianjournals.com.br/ojs/index.php/BJAER/article/view/87845/59652
~ Agudo-Padrón, A.I. 2026 c. Non-marine molluscs diversity of “Ponta do Papagaio” and adjacent areas, Maciambú Valley/ Lowland, Palhoça municipal district, greater Florianópolis, Santa Catarina State/ SC, central southern Brazil. Brazilian Journal of Animal and Environmental Research, 9(2): 1-17. https://ojs.brazilianjournals.com.br/ojs/index.php/BJAER/article/view/87961/59731
~ Agudo-Padrón, A.I.; V***o, R.V. ad-V. & Saalfeld, K. 2013. Moluscos e Saúde Pública em Santa Catarina: subsídios para a formulação estadual de políticas preventivas sanitaristas. Duke de Caxias, RJ: Espaço Científico Livre Projetos Editoriais, E-book, 134 p.http://sbmalacologia.com.br/wp-content/uploads/2013/10/MOLUSCOS_E_SA%C3%9ADE_P%C3%9ABLICA_EM_SANTA_CATARINA.pdf
~ Darrigran, G.; Agudo-Padrón, I.; Baez, P.; Belz, C.; Cardoso, F.; Carranza, A.; Collado, G.; Correoso, M.; Cuezzo, M.G.; Fabres, A.; Gregoric, D.E.G.; Letelier, S.; Ludwig, S.; Mansur, M.C.; Pastorino, G.; Penchaszadeh, P.; Peralta, C.; Rebolledo, A.; Rumi, A.; Santos, S.; Thiengo, S.; Vidigal, T. & Damborenea, C. 2020. Non-native mollusks throughout South America: emergent patterns in an understudied continent. Biological Invasions, 22(5): 853–871. https://www.researchgate.net/publication/338372061_Non-native_mollusks_throughout_South_America_emergent_patterns_in_an_understudied_continent
~ Machado, F.M.; Salvador, R.B.; Miyahira, I.C. et al. 2026. Non-native mollusc species in Brazil: a first national inventory and distributional overview. Biological Invasions, 28(88). https://doi.org/10.1007/s10530-026-03794-7
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Credit A-B-C maps: ... Original by "Catálogo Taxonômico da Fauna do Brasil" (CTFB –Mollusca), PNUD.
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