Species Canthon floridanus

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Padilla-Gil, D.N. & G. Halffter. 2007. Biogeography of the areas and Canthonini (Coleoptera: Scarabaeidae) of dry tropical forests in Mesoamerica and Colombia. Acta Zoológica Mexicana (Nueva Serie) 23(1): 73-108.

ABSTRACT

This biogeographical analysis examines the historical, geological, climatic and ecological processes that have influenced the formation of the dry tropical forests (DTF) of Mesoamerica and Colombia, areas that are the setting for multiple biogeographical stories that in this case are illustrated by the patterns and evolutionary processes of Canthonini. In this study we test the hypothesis that the Canthonini fauna of dry tropical forests has a South American affinity. To this end, we compare extant species from a tract of dry tropical forest in Mexico, a second enclave in Costa Rica, four from the Caribbean region of Colombia and finally one from the north of Tolima in the Upper Magdalena River Valley, Colombia. The geomorphological characteristics of the enclaves of DTF are also compared, as are the geographical distribution and taxonomic affinities of each of the species found in these dry tropical forests. The biogeographical, historical and geological aspects of the enclaves were evaluated using a Parsimony Analysis of Endemicity (PAE), with two tropical rain forests as the outgroup: Leticia (Amazonas, Colombia) and Los Tuxtlas (Veracruz, Mexico).

M. A. Vulcano and F. S. Pereira, Catalogue of the Canthonini (Col. Scarab.) inhabiting the Western Hemisphere, Entomologische Arbeiten aus dem Museum G. Frey 15: 570-685 (1975).

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Lindquist, A.W. (1935) Notes on the habits of certain coprophagous beetles and methods of rearing them. U.S. Dept. of Agriculture Circular No. 351: 1-9.

Introduction

Coprophagous beetles are of economic importance as well as of general interest, for severel reasons: (1) By disturbing cattle dung, the breeding medium of the horn fly (Haematobia irritans L.), they probably reduce the abundance of this widespread pest of cattle; (2) many species are intermediate hosts of parasites of poultry and other animals; (3) they play an important role in the interchange of soils and the incorporation of organic matter; and (4) they exhibit the instincts of maternity and progeny protection.