Cabassous chacoensis 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Cingulata Dasypodidae

Scientific Name: Cabassous chacoensis
Species Authority: Wetzel, 1980
Common Name(s):
English Chacoan Naked-tailed Armadillo
Spanish Cabasú Chaqueño, Cabasú Chico
Taxonomic Notes: Cabassous chacoensis was described by Wetzel in 1980.

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2014
Date Assessed: 2013-10-02
Assessor(s): Meritt, D.A., Superina, M. & Abba, A.M.
Reviewer(s): Loughry, J.
Contributor(s): Rogel, T.
Facilitator/Compiler(s): Abba, A.M.
Cabassous chacoensis is listed as Near Threatened given an inferred population decline as a result of habitat loss and hunting, which may have approached 20-25% over the last three generations (suspected to be around 15 years). It almost qualifies as threatened under criterion A2cd.
Previously published Red List assessments:
2010 Near Threatened (NT)
2008 Near Threatened (NT)
2006 Near Threatened (NT)
1996 Data Deficient (DD)

Geographic Range [top]

Range Description: Cabassous chacoensis has been recorded from the Gran Chaco of western Paraguay and north-central Argentina (Gardner 2005). It has not been recorded in Bolivia.
Countries occurrence:
Argentina (Catamarca, Chaco, Córdoba, Formosa, La Rioja, Salta, San Juan, San Luis, Santa Fé, Santiago del Estero); Paraguay
Continuing decline in extent of occurrence (EOO): Unknown
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The abundance of C. chacoensis is not known. In general it is rarely sighted.
Current Population Trend: Unknown
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: This largely fossorial species is restricted to chaco-seco (thorn forest) habitats (Meritt 1985). There is little available information on its life history and other biological characteristics. No information exists on the age at first reproduction, longevity, or generation length of this species, neither from wild nor from captive populations. The generation length of another armadillo species, the Nine-banded Armadillo (Dasypus novemcinctus), has been estimated to be 5 years. The generation length for C. chacoensis is suspected to be similar.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 5

Use and Trade [top]

Use and Trade: This armadillo is hunted to be used as a protein source.

Threats [top]

Major Threat(s): This species is threatened by habitat degradation from agricultural activity, subsistence hunting for food by local people, as well as predation by dogs.

Conservation Actions [top]

Conservation Actions:  This armadillo species has been recorded in several Argentinean national and provincial parks.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability: Suitable season: resident major importance:Yes
2. Savanna -> 2.1. Savanna - Dry
suitability: Suitable season: resident major importance:Yes
3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry
suitability: Suitable season: resident major importance:Yes
2. Land/water management -> 2.1. Site/area management
3. Species management -> 3.1. Species management -> 3.1.1. Harvest management

In-Place Research, Monitoring and Planning
  Action Recovery plan:No
  Systematic monitoring scheme:No
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
  Occur in at least one PA:Yes
  Area based regional management plan:No
In-Place Species Management
  Harvest management plan:No
  Successfully reintroduced or introduced beningly:No
  Subject to ex-situ conservation:No
In-Place Education
  Subject to recent education and awareness programmes:No
  Included in international legislation:No
  Subject to any international management/trade controls:No
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.4. Scale Unknown/Unrecorded
♦ timing: Ongoing ♦ scope: Majority (50-90%) ♦ severity: Slow, Significant Declines ⇒ Impact score: Medium Impact: 6 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.4. Scale Unknown/Unrecorded
♦ timing: Ongoing ♦ scope: Majority (50-90%) ♦ severity: Slow, Significant Declines ⇒ Impact score: Medium Impact: 6 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.1. Hunting & trapping terrestrial animals -> 5.1.1. Intentional use (species is the target)
♦ timing: Ongoing ♦ scope: Majority (50-90%) ♦ severity: Slow, Significant Declines ⇒ Impact score: Medium Impact: 6 
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
2. Conservation Planning -> 2.1. Species Action/Recovery Plan
2. Conservation Planning -> 2.2. Area-based Management Plan
3. Monitoring -> 3.1. Population trends
3. Monitoring -> 3.2. Harvest level trends
3. Monitoring -> 3.4. Habitat trends

♦  Food - human
 Local : ✓   National : ✓ 

Bibliography [top]

Abba, A.M., Tognelli, M.F., Seitz, V.P., Bender, J.B. and Vizcaíno, S.F. 2012. Distribution of extant xenarthrans (Mammalia: Xenarthra) in Argentina using species distribution models. Mammalia 76: 123-136.

Aguiar, J.M. and da Fonseca, G.A.B. 2008. Conservation status of the Xenarthra. In: S.F. Vizcaino and W.J. Loughry (eds), The Biology of the Xenarthra, pp. 215-231. University Press of Florida, Gainesville, Florida.

Baillie, J. and Groombridge, B. (comps and eds). 1996. 1996 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

Gardner, A.L. 1993. Order Xenarthra. In: D. E. Wilson and D. M. Reeder (eds), Mammal Species of the World: A taxonomic and geographic reference. Second Edition, pp. 63–68. Smithsonian Institution Press, Washington, DC, USA.

Gardner, A.L. 2005. Order Cingulata. In: D.E. Wilson & D.M. Reeder (eds) Mammal Species of the World: A taxonomic and geographic reference. Third Edition. pp: 94–99. The Johns Hopkins University Press, Baltimore.

IUCN. 2014. The IUCN Red List of Threatened Species. Version 2014.1. Available at: (Accessed: 12 June 2014).

Meritt, D.A. 1985. Naked-tailed armadillos Cabassous sp. In: Montgomery G. G. (ed.), The evolution and ecology of armadillos, sloths, and vermilinguas, pp. 389-391. Smithsonian Institution Press, Washington and London.

Monguillot, J.C. and Miatello, R. 2009. Presencia de Cabassous chacoensis en el Parque Nacional Talampaya, La Rioja, Argentina. Edentata 8-10: 56-57.

Redford, K.H. and Eisenberg, J.F. 1992. Mammals of the Neotropics, The Southern Cone: Chile, Argentina, Uruguay, Paraguay. University of Chicago Press, Chicago, USA.

Smith, P. 2009. FAUNA Paraguay Handbook of the Mammals of Paraguay. Vol 2: Xenarthra. Available at:

Tamburini, D.M. and Briguera, C.V. 2012. Nuevo registro del cabasú chaqueño, Cabassous chacoensis Wetzel, 1980 para la provincia de Córdoba, Argentina. Edentata 13: 69-71.

Wetzel, R.M. 1980. Revision of the naked-tailed armadillos, genus Cabassous McMurtrie. Annals of Carnegie Museum 49: 323-357.

Wetzel, R.M. 1982. Systematics, distribution, ecology, and conservation of South American edentates. In: M.A. Mares and H.H. Genoways (eds), Mammalian biology in South America, pp. 345-375. University of Pittsburgh, Pittsburgh, PA, USA.

Citation: Meritt, D.A., Superina, M. & Abba, A.M. 2014. Cabassous chacoensis. The IUCN Red List of Threatened Species 2014: e.T3413A47437534. . Downloaded on 01 December 2015.
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