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      New species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on giant water bugs, Belostoma spp. (Hemiptera, Belostomatidae) from southern Brazil Translated title: Nova espécie do gênero Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosimbionte sobre baratas d´água, Belostoma spp. (Hemiptera, Belostomatidae) da região sul do Brasil

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          Abstract

          A new species of Temnocephala Blanchard, 1849 is described from southern Brazil, ectosymbiont on giant water bugs (aquatic hemipterans), Belostoma spp. from the greater Porto Alegre, State of Rio Grande do Sul. Some hemipterans examined were positive for this species of Temnocephala and carried bunches of eggs between the first two pairs of legs and between the first pair of legs and the rostrum, as well as adult and young specimens. The adults were darkly pigmented (greenish-brown), mimetizing the color of the hemipteran hosts. The new species is similar to Temnocephala decarloi Moretto, 1978, from Argentina, the only other species of Temnocephala from belostomatid hemipterans known to date, by having an extra long and curved cirrus, but differs by having the distal portion of the introvert not bent as a 'full-bent' smoking pipe-like, as the author depicted originally for T. decarloi.

          Translated abstract

          Uma nova espécie de Temnocephala Blanchard, 1849 é descrita para o sul do Brasil, ectosimbionte sobre baratas-d'água (hemípteros aquáticos), Belostoma spp. da região metropolitana de Porto Alegre, Estado do Rio Grande do Sul. Vários hemípteros examinados estavam positivos para esta espécie do gênero Temnocephala, inclusive com posturas sempre localizadas na face ventral entre os dois primeiros pares de apêndices locomotores, e entre o primeiro par de pernas e o rostro. Espécimes adultos e jovens de tamanhos variados também foram sempre encontrados na face ventral do hemíptero. Os vermes adultos eram pigmentados (marrom-esverdeado), mimetizando a cor do exoesqueleto de seus hospedeiros. A nova espécie é semelhante à Temnocephala decarloi Moretto, 1978, descrita da Argentina, única espécie conhecida do gênero já encontrada sobre hemípteros belostomatídeos, por ter um cirro extremamente longo e curvo, mas difere desta por ter a porção distal do 'introvert' sem a forma típica de um cachimbo ('full-bent') como ilustrada pelo autor na descrição original.

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          Animal tissue techniques.

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            Animal tissue technique

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              New temnocephalans (Platyhelminthes): Ectosymbionts of freshwater crabs of shrimps

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rbzool
                Revista Brasileira de Zoologia
                Rev. Bras. Zool.
                Sociedade Brasileira de Zoologia (Curitiba )
                0101-8175
                March 2005
                : 22
                : 1
                : 107-118
                Article
                S0101-81752005000100014
                10.1590/S0101-81752005000100014
                37e02695-f953-4195-9a3e-2f7080294bee

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

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0101-8175&lng=en
                Categories
                ZOOLOGY

                Animal science & Zoology
                Ectocommensals,Neotropical,Rio Grande do Sul,South America,taxonomy,América do Sul,ectocomensais,taxonomia

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