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      OCORRÊNCIA DE FORMIGAS CORTADEIRAS NA REGIÃO DA DEPRESSÃO CENTRAL DO ESTADO DO RIO GRANDE DO SUL Translated title: OCCURRENCE OF LEAF-CUTTING ANTS IN THE "DEPRESSÃO CENTRAL" REGION OF RIO GRANDE DO SUL STATE, BRAZIL

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          Abstract

          Com o objetivo de identificar as espécies de formigas cortadeiras que existem na região da Depressão Central do Estado do Rio Grande do Sul, de verificar sua predominância e distribuição geográfica, realizou-se um levantamento em 51 municípios. Foram coletadas 40 amostras de formigas de cada município no segundo semestre de 1999. A identificação das formigas e a interpretação dos dados foi realizada no Departamento de Fitossanidade da Faculdade de Agronomia "Eliseu Maciel" da Universidade Federal de Pelotas. Na análise das 2.058 amostras de formigas, constatou-se a presença de: Atta sexdens piriventris Santschi, 1919; Acromyrmex laticeps (Emery, 1905); Acromyrmex crassispinus (Forel, 1909); Acromyrmex heyeri (Forel, 1899); Acromyrmex lundi (Guerin, 1838); Acromyrmex ambiguus (Emery, 1887); Acromyrmex striatus (Roger, 1863); Acromyrmex lobicornis (Emery, 1887); Acromyrmex coronatus (Fabricius, 1804) e Acromyrmex landolti balzani Emery, 1890. As espécies predominantes foram Acromyrmex lundi, Atta sexdens piriventris, A. ambiguus, A. heyeri, A. striatus e A. laticeps, representando, respectivamente, 23,91%, 22,89%, 16,86%, 14,04%, 6,85% e 6,70% do total amostrado, ocorrendo em 84,31%, 60,78%, 70,59%, 84,31%, 78,43% e 88,24% dos municípios, respectivamente. As demais espécies (A. crassispinus, A. lobicornis, A. landolti balzani e A. coronatus) foram pouco freqüentes, representando juntas 6,27% do total, sendo por isso, consideradas de ocorrência rara nesta região.

          Translated abstract

          With the objective of to identifying the leaf-cutting ants that occur in the Depressão Central Region of Rio Grande do Sul State, Brazil, to verify its predominance species and its geographical distribution, a survey was done in 51 counties. Forty ant samples were collected in each county in second semester of 1999. Ants identification and data interpretation were carried out in the Fitossanidade Department of "Eliseu Maciel" Agronomy Faculty of the Federal University of Pelotas. Ants from 2.058 samples were identified, being observed: Atta sexdens piriventris Santschi, 1919; Acromyrmex laticeps (Emery, 1905); Acromyrmex crassispinus (Forel, 1909); Acromyrmex heyeri (Forel, 1899); Acromyrmex lundi (Guerin, 1838); Acromyrmex ambiguus (Emery, 1887); Acromyrmex striatus (Roger, 1863); Acromyrmex lobicornis (Emery, 1887); Acromyrmex coronatus (Fabricius, 1804) and Acromyrmex landolti balzani (Forel, 1884). The predominant species were Acromyrmex lundi, Atta sexdens piriventris, A. ambiguus, A. heyeri, A. striatus and A. laticeps, representing, respectively, 23.91%, 22.89%, 16.86%, 14.04%, 6.85% and 6.70% of total samples in this region, occurring in 84.31%, 60.78%, 70.59%, 84.31%, 78.43% and 88.24% of the counties, respectively. The others species (A. crassispinus, A. lobicornis, A. landolti balzani and A. coronatus) are less frequent, representing together 6.27% of total samples, being considered of rare occurrence in this region.

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          O Gênero Acromyrmex no Brasil

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            Saúvas do sul e centro do Brasil

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              Estudo de Acromyrmex (Hymenoptera: Formicidae) com ocorrência constatada no Brasil: subsídios para uma análise filogenética

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria )
                1678-4596
                April 2002
                : 32
                : 2
                : 185-190
                Affiliations
                [1 ] Universidade Federal de Pelotas Brazil
                [2 ] Universidade Federal de Pelotas Brazil
                [3 ] Universidade Federal de Pelotas Brazil
                Article
                S0103-84782002000200001
                10.1590/S0103-84782002000200001
                d719ac03-af12-4ecf-b2e3-14747a891f06

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-8478&lng=en
                Categories
                AGRONOMY

                Horticulture
                Atta,zoogeography,saúva,Acromyrmex,quenquém,zoogeografia,quenquén
                Horticulture
                Atta, zoogeography, saúva, Acromyrmex, quenquém, zoogeografia, quenquén

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