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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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Ataenius platensis (Blanchard, 1847) |
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Ataenius platensis (Blanchard).
Photo by Paul Skelley. |
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Ataenius platensis distributional records
from southern South America. |
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Original combination: Oxyomus platensis Blanchard, 1847: 185. |
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Type locality: “Montevideo et Corrientes.” |
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Synonyms: Ataenius integer Harold, 1868b: 86; type locality: .....“Brasilia.”
Ataenius anticus Fall, 1930: 105; type locality: “Hope, Arkansas.”
Ataenius granchaocensis Balthasar, 1947: 49; type locality: ..
.....“Paraguay (Gran Chaco).”
Ataenius histrionicus Balthasar, 1947: 49; type locality:
.....“Paraguay, prov. Alto Parana.” Ataenius heyrovskyi Balthasar, .....1960: 5; type locality: “Brasilien, Rio Madeira.”
Ataenius degallieri Chalumeau, 1990: 340; type locality: “Brasil .....(Para)” |
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Specimens examined: 9 specimens were examined from ABTS, FMNH, UMCE. |
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Distribution: CHILE (9). IV Región de Coquimbo (9): Combarbalá, Paihuano (10 km S).
Stebnicka (2005) also recorded this species from “Chillan, Ñuble Río Pinto.”
Outside the study region, this species has been recorded from the Nearctic; Mexico; Central America; the
West Indies; Venezuela; Colombia; Ecuador; Brazil; Peru; Bolivia; Paraguay; Uruguay; and Argentina: Misiones,
Santiago del Estero, Formosa, San Luis, Entre Ríos, Jujuy, Salta, Buenos Aires (Stebnicka 2005).
Additionally, Blanchard (1847) reported this species from Corrientes, Argentina and Bruch (1911) reported it
from Chaco, Mendoza, and Catamarca in Argentina. We also examined specimens in the HAHC from Argentina:
Córdoba, La Rioja. |
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Temporal data: January (4), November (5). |
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Diagnosis: Length 3–5 mm. Clypeus with transverse wrinkles, not distinctly punctate or granulate.
Head with poorly defined band of punctures at base. Pronotum distinctly punctate throughout with
dense fine punctures, coarse punctures also present laterally; lateral pronotal setae spatulate. Pronotum and
elytra shiny. Elytral interval 9 (penultimate lateral interval) weakly punctured, but not different from those of
disc. |
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Remarks: Ataenius platensis was recently discussed by Stebnicka (2005) and is part of a difficult complex
of species (most of which are now considered synonyms). It is a widespread species occurring from the
United States to Argentina. Adults are attracted to lights and the species is often extremely abundant in collections.
There seems to be a connection between human activities and the abundance of this species. Adults
are occasionally collected in cow dung, but that may not be the preferred larval food. |
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References:
Stebnicka, Z.T. (2005) The New World species of Ataenius Harold, 1867. VI. Revision of the A. aequalis-platensis-group (Coleotpera:
Scarabaeidae: Aphodiinae: Eupariini). Acta Zoologica Cracoviensia, 48B(1–2), 99–138. |
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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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