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      Temnocephala colombiensis n. sp. (Platyhelminthes: Temnocephalidae) from Antioquia, Colombia Translated title: Temnocephala colombiensis n. sp. (Platyhelminthes: Temnocephalidae) de Antioquia, Colombia

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          Abstract

          Temnocephala colombiensis n. sp., is described as ectosymbiont of Fornácea sp. from San José del Nús, Antioquia, Colombia. Temnocephalans were removed from the mantle cavity and its eggs from the umbilicus and the basal region of the operculum. The new species is characterized by: cirrus curved toward hindbody, approximately 90°; introvert's swelling with 20 to 26 longitudinal rows of fine spines and 11 to13 spines per row; dorsolateral excretory syncytial plates rectangular with rounded corners and excretory pores eccentric, displaced to the anterior portion of the plate. Additionally we have done a comparison of cirrus morphology for Temnocephala described to date, based on literature review. This is the first Temnocephala described from Colombia.

          Translated abstract

          Temnocephala colombiensis n. sp., se describe como ectosimbionte de Fomacea sp. de San José del Nús, Antioquia, Colombia. Los temnocéfalos fueron removidos de la cavidad del manto y sus huevos, del ombligo y región basal del opérculo. La nueva especie se caracteriza por un cirro curvado hacia la región posterior del cuerpo, con aproximadamente 90°; introverto ensanchado con 20-26 filas de espinas longitudinales y 11-13 espinas por fila; placas sincitiales dorsolaterales rectangulares con extremos redondeados y poros excretores excéntricos en la porción anterior. Adicionalmente se realiza una comparación de la morfología del cirro de las especies descritas a la fecha. Esta es la primera especie de Temnocephala descrita para Colombia.

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          New species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on Aegla serrana Buckup & Rossi (Crustacea, Anomura) from southern Brazil

          A new species of the genus Temnocephala Blanchard, 1849 is described from southern Brazil, ectosymbiont on Aegla serrana Buckup & Rossi, 1977, an anomuran crustacean, collected in a creek and a reservoir of the highlands in the State of Rio Grande do Sul. All crustaceans examined were positive for this species of Temnocephala and carried eggs in different regions of the ventral side: perioral area, pleural strips, esternal plates, pereiopods and chelipods; to a lesser extent in the dorsal side of the cephalothorax and dorsal side of the uropods; as well as adult and young specimens. The most distinctive characters of the new species are: 1) cyanophilous glands forming an irregular-shaped, grape-like, bunch of approximately 10-15 cells, deeply staining with hematoxylin; 2) shape and size of the cirrus and its introvert section; 3) number, size and distribution of the rhabdite glands and 4) shape and position of the post tentacular, 'excretory' syncytial plates, with the off-centered nephridiopore.
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            New species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on giant water bugs, Belostoma spp. (Hemiptera, Belostomatidae) from southern Brazil

            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.
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              A new species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on Trichodactylus fluviatilis Latreille (Crustacea, Decapoda, Trichodactylidae) from southern Brazil

              Temnocephala trapeziformis sp. nov., ectosymbiont on Trichodactylus fluviatilis Latreille, 1828 is described from the State of Rio Grande do Sul, southern Brazil. Sixty-eight crabs were examined, of which 61 (89.7 %) were positive for this species of the genus Temnocephala Blanchard, 1849. Eggs, as well as adult and young specimens, were found on the pleural areas of the carapace, in the orbital cavities, and, usually, on the fourth pair of pereiopods. The temnocephalans were always devoid of body pigmentation, although they kept the red eye pigment, undiluted in specimens fixed by hot (90ºC) phosphate buffered 10% formalin. The most distinctive characters of the new species are: 1) the shape and size of the cirrus and the characteristics of its introvert section; 2) the trapezoidal shape of the dorsolateral post-tentacular 'excretory' epidermal syncytial plates, with the nephridiopore in the lower inner corner of the plate; and 3) the number, size, and distribution of the rhabdite producing glands, as observed in very young specimens.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rmbiodiv
                Revista mexicana de biodiversidad
                Rev. Mex. Biodiv.
                Instituto de Biología (México )
                2007-8706
                December 2013
                : 84
                : 4
                : 1090-1099
                Affiliations
                [1 ] Universidad de Antioquia Colombia
                [2 ] Universidad de Antioquia Colombia
                Article
                S1870-34532013000400005
                10.7550/rmb.30259
                551aeb9f-a205-409f-b543-32bd7c8e5472

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

                History
                Categories
                Biodiversity Conservation

                Animal science & Zoology
                temnocephalans,mollusk,South America,taxonomy,temnocéfalos,moluscos,Sudamérica,taxonomía

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