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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
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Classification |
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Platytomus micros (Bates) |
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Platytomus micros (Bates)
Photo by Paul Skelley. |
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Original combination: Psammodius micros Bates, 1887: 103.
Type locality: “Guatemala, Capetillo, Dueñas.” |
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Specimens examined: 1 specimen was examined from MNNC. |
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Distribution: CHILE (1). V Región de Valparaíso (1): Cerro Terevaka (Isla de Pascua).
Outside the study area, this species has been recorded from the Nearctic and Central America (Cartwright
1948). |
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Temporal data: May (1). |
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Diagnosis: Length 3 mm. Body small, reddish brown. Head with frontal lobes bearing setae. Metatarsus with basal segment shorter than superior tibial spur, and notably widened apically.
Pronotum and elytra lacking lateral setal fringe. Pygidium with eroded area complete. |
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Remarks: Platytomus micros is a widespread species, primarily in North and Central America. The species
is frequently attracted to light and can be common in collections. There is enough regional variation to
imply that cryptic species may be involved. The identity of the population from Easter Island is tenuous, and
a full revision of the genus is needed to resolve the question. For now, we consider it P. micros, pending further
study.Platytomus micros is similar to another widespread species, Platytomus longulus (Cartwright), which
occurs from the southern United States to Argentina and can be very abundant at light. Platytomus longulus can be distinguished from P. micros by having the basal segment of the metatarsus little widened, pygidium
with eroded area divided longidudinally at middle, and the frontal lobes on the head anterior to the eyes lacking
setae. To date, no specimens of P. longulus have been seen from the study region, but its occurrence is
expected. |
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References:
Cartwright, O.L. (1948) The American species of Pleurophorus (Coleopera: Scarabaeidae). Transactions of the American Entomological
Society, 74, 131–145.
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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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