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Classification

.......Arctodium planum (Blanchard, 1850)
.......
Syn. Cratoscelis plana Blanchard, 1850
.......Syn. Cratoscelis canicapilla Philippi & Philippi, 1864

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Distribution of Arctodium planum.
 
Superfamily.....
Family ...........
Subfamily ......
Tribe ..............
Genus ...........
Scarabaeoidea
Scarabaeidae
Melolonthinae
Lichniini
Arctodium
 
Melolonthinae Tribes
Diplotaxini
Hopliini
Lichniini
Liparetrini
Macrodactylini
Melolonthini
Oncerini
Pachydemini
Podolasiini
Sericini
Sericoidini
Incertae sedis
 
Melolonthinae Taxa Map
Lichniini Overview
Lichniini Key
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Description. Arctodium planum is characterized by its long, dense, pale yellow setae covering all parts of the body. While some specimens of A. vulpinum may also have pale colored setae on some parts of the body, the setae are not usually as long, dense, or pale yellow. Setae of A. vulpinum are typically more golden brown. Other species of Arctodium do not have pale setae. In particular, Arctodium planum is the only species that has pale colored setae on the apices of the segments of the maxillary and labial palps and a fringe of pale yellow setae along the eye canthus. All other species of Lichniini have dark colored (brown, gray, or black) setae on the mouthparts and eye canthus. Arctodium planum males are also characterized by the metatibial apex, which is modified into a spine that is slender and attenuate and is longer than the adjacent spurs. Males of A. vulpinum and A. discolor also have a long spine that is longer than the adjacent spurs, but the shape is different. The metatibial spine of males of A. vulpinum and A. discolor is much broader and oblique towards the apex. Males of A. mahdii have a metatibial spine that is shorter than the adjacent spur.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Distribution. Central Chile in Region V (Valparaíso), Region VI (O’Higgins), and Region Metropolitana de Santiago.

 
 

Phenology. September through January.

 

References:
Hawkins, S. J. 2006. Revision of the Chilean tribe Lichniini Burmeister, 1844 (Coleoptera: Scarabaeidae: Melolonthinae). Zootaxa 1266: 1-63.

 
 
   
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Author: Shauna Joy Hawkins
Generated on: 26/APR/2007
..... Last modified: 26/APR/2007
University of Nebraska State Museum - Division of Entomology