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Scarabaeoidea of Southern South America Links
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Keys and generic profile |
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Scarab Guide Links
(goes to the University of Nebraska
web site) |
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Classification |
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Tesarius caelatus (LeConte, 1857) |
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Tesarius caelatus (LeConte).
Photo by Paul Skelley. |
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Tesarius caelatus distributional records
from southern South America. |
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Original combination: Aegialia caelata LeConte, 1857: 42.
Type locality: “San Francisco.” |
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Specimens examined: 106 specimens were examined from ABTS, FMNH, HAHC, JMEC. |
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Distribution: CHILE (106). V Región de Valparaíso (1): San Sabastián; Región Metropolitana (1): El
Tabo; VI Región de O’Higgins (35): Pichilemu; X Región de Los Lagos (69): Carelmapu, Pangal, Reserva
Costera Valdiviana (Chaihuin Sector), Reserva Costera Valdiviana (Colún Sector).
Outside the study area, this species has been recorded from the Nearctic and the Palaearctic (Skelley
2001). |
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Specimens examined: 47 specimens were examined from ABTS, FMNH, JMEC, MEUC, MNNC,
PESC, TMSA, UCDS, UMCE, UNSM. |
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Distribution: CHILE (47). IV Región de Coquimbo (2): Camino La Serena (Ovalle); V Región de Valparaíso
(1): Villa Alemana; Región Metropolitana (30): Apoquindo, Colina, Colina (Ruta 5 N, km 16.5),
Curacaví (Lingues de Miraflores), El Ingenio, Las Condes (Quinchamali), Rinconada (Maipú), Santiago, Santiago
(El Canelo), Santiago (Ñuñoa), Santiago (Renca); VI Región de O’Higgins (3): Pelequén, San Vicente
de Tagua; VII Región del Maule (6): Linares, Reserva Nacional Los Ruiles (Cauquenes), Talca (20 km S),
Tonlemo; VIII Región del Bío-Bío (1): Río Biobío; No Data (4).
This species was also recorded from Isla Juan Fernández, Chile by Schmidt (1931).
Outside the study area, this species has been recorded from the Nearctic and Neotropics; the Palaearctic;
Africa (Löbl and Smetana 2006). |
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Temporal data: January (69), February (1), May (1), October (35). |
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Diagnosis: Length 3–4 mm. See genus diagnosis.
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Remarks: Tesarius caelatus is native to the western coast of North America, where it can be abundant in
ocean-side sand dunes. Populations in Chile are indistinguishable from those in North America. Tesarius
caelatus appears to have been recently established in Chile and Great Britain (Johnson 1975, Skelley 2001),
quite possibly having been transported in ship ballasts. Based on our observations of label data, this species
has occurred in Chile since at least 1961.
In January 2006, one of us (ABTS) did field work in Chile and specifically targeted areas where psammodiines might occur. Specimens were readily collected in several localities with beach sand and sand dune systems
(as discussed in the remarks section for Leiopsammodius indefensus). Leiopsammodius indefensus and
Tesarius caelatus were collected using identical collecting techniques and found in the same areas with one
notable exception: Tesarius caelatus was not found anywhere on Isla Grande de Chiloé. We hypothesize that
because this introduced species is flightless, it has not had the opportunity to colonize islands such as Isla
Grande de Chiloé. Nonetheless, this species ranges extensively across the middle third of mainland Chile. |
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References:
Johnson, C. (1975) Nine species of Coleoptera new from Britain. Entomologist’s Monthly Magazine, 111, 177–183.
Skelley, P.E. (2001) New record for Tesarius Rakovic in South America (Scarabaeidae: Aphodiinae: Psammodiini). Insecta Mundi,
14, 240. [Dated 2000]. |
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Excerpt from:
Smith, A. B. T. and P. E. Skelley. 2007. A review of the Aphodiinae (Coleoptera: Scarabaeidae) of southern South America. Zootaxa, 1458, 1-80. |
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