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Scarabaeoidea of Southern South America Links
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Keys |
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Scarab Guide Links
(goes to the University of Nebraska
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Classification |
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Orodaliscoides Schmidt, 1913
Aphodius (Orodaliscoides) Schmidt, 1913: 145 |
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Orodaliscoides reflexus
(Schmidt) male.
Photo by Paul Skelley. |
Orodaliscoides reflexus
(Schmidt) female.
Photo by Paul Skelley. |
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Type species: Aphodius rugosiceps Harold, 1859 by subsequent designation (Dellacasa 1988). |
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Diagnosis: Body reddish brown. Head lacking tubercles on frontal suture. Head and pronotum not flattened
as in Podotenus. Protibia with three distinct teeth in both sexes. Pronotum broader in
males than females . There is a lot of variation in the pronotal shape between males and females,
and between members of the same sex within a series. Females tend to have the base of the pronotum somewhat
constricted, males the base often has a notable posterior angle. Elytron lacking apical umbone.
Pygidium entirely smooth, unmodified. Metatibia with apical spurs separated by metatarsus. |
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Remarks: This genus is endemic to the study region and contains two species. A full description and
illustrations of Orodaliscoides and its type species are present in Dellacasa and Gordon (1997) and Dellacasa
et al. (2001). Orodaliscoides shares many characters with Symphodon, Podotenus, and a few other Australian
genera, but has a less flattened body shape, thicker clypeal margin, elytral intervals not alternately modified,
both sexes with three protibial teeth, and males with broader pronotum than females. Orodaliscoides appears more closely related to Acrossidius Schmidt in Australia than to other South American
taxa. A thorough phylogenetic analysis of the Australian and South American genera is needed to gain a better understanding of their relationships. Specimens of Orodaliscoides are rare in collections but seem to be attracted to light. The natural history
of the species in this genus is unknown. |
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Species: (click on species name for information)
Orodaliscoides reflexus(Schmidt)
Orodaliscoides rugosiceps (Harold) |
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References:
Dellacasa, M. (1988) Contribution to a world-wide catalogue of Aegialiidae, Aphodiidae, Aulonocnemidae, Termitotrogidae
(Coleoptera Scarabaeoidea). Memorie della Societa Entomologica Italiana, 66, 1–455. [Dated 1987].
Dellacasa, G. & Gordon, R.D. (1997) Nearctic and neotropical genus-group taxa of Aphodiini and their type species (Coleoptera: Aphodiidae).
Annali del Museo Civico di Storia Naturale “Giacomo Doria”, 91, 355–382.
Dellacasa, G., Bordat P. & Dellacasa, M. (2001) A revisional essay of world genus-group taxa of Aphodiinae (Coleoptera: Aphodiidae).
Memorie della Societa Entomologica Italiana, 79, 1–482. |
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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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