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    ABSTRACT: The following new species of geotrupids and scarabs from Costa Rica and Panama are described: Athyreus gulesseriani new species, Ateuchus alutacius new species (the first recorded brachypterous Ateuchus species), Coprophanaeus geph-yra new species, Deltochilum acanthus new species, and Onthophagus turgidus new species. The following two species of Coprophanaeus are revalidated: C. kohlmanni Arnaud and C. uhleri Malý & Pokorný. Illustrations of the dorsal habitus of the new species are provided, as well as distribution maps for all species.
    Zootaxa 02/2012; 3193:28-52.
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    ABSTRACT: A historic analysis of the classification of Scarabaeoidea is presented. The analysis comprises a historic comparison of the type and number of characters of the genera and their grouping into higher-level taxa. The analysis is divided into three time periods, including a review of 70 publications on scarab systematics (beginning with Linnaeus). The first period (1735–1858) encompasses an era prior to the publication of Darwin's The Origin of Species, and it is, therefore, a classification process arguably free of any evolutionary influences. The second period (1859–1949) includes a comparative synthesis on the classification of the Scarabaeoidea based on faunistic and taxonomic works. The third period (1950–2006) summarizes and analyzes classifications influenced by phylogenetic theories and is based on monographs, faunal studies, keys for regional fauna, papers on comparative morphology, and studies specifically devoted to the understanding of evolutionary relationships and processes in the Scarabaeoidea. A large problem concerning the classification and phylogeny still remains because most studies do not consider all the diversity of the Scarabaeoidea in a single analysis.
    The Coleopterists Bulletin 01/2009;
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    ABSTRACT: This study is a qualitative exploratory analysis of the communities of Turrialba, Siquirres and Guácimo, which border the Parismina River of Costa Rica. The main purpose of this study is to identify the structural weaknesses that are present in the enterprises and the impact of these weaknesses on the capacity for raising the sustainable development competitiveness for the area. The study used semi-structured interviews and focal interviews as instruments of data collection. In addition, the study used the community of Los Santos, located in the Central Valley of Costa Rica, as a reference for comparison. The results indicate weaknesses related to the capacity of organization, financial knowledge, and low technological innovation that demonstrates that the enterprises have a greater direction towards spurious competitiveness.
    Ecological Engineering. 01/2008;


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5o Seminario Manejo y Utilización de Pastos y Forrajes en Sistemas de Producción Animal 1999: Barinas. Rony Tejos (Editor). Universidad Nacional Experimental de los Llanos Occident...
Revista Científica UDO Agrícola, ISSN 1317-9152, Vol. 9, Nº. 2, 2009, pags. 403-413.

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