New species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectosymbiont on giant water bugs, Belostoma spp. (Hemiptera, Belostomatidae) from southern Brazil

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.

Dendrorchis pampae sp. n. (Digenea: Gorgoderidae) from Cynopoecilus melanotaenia (Cyprinodontiformes: Cynolebiidae) a killifish from southern Brazil, with an emended diagnosis of Dendrorchis

“…Fifteen specimens of C. melanotaenia were collected in a seasonal wetland (31°48′25″S, 52°25′11″W) located on the floodplains of Padre Doutor stream (Patos-Mirim lagoon system, state of Rio Grande do Sul, southern Brazil) in December, 2011. The collected digenean specimens were fixed in cold AFA (ethyl alcohol, formalin, acetic acid) (Amato & Amato, 2005) under minimal cover slip pressure. Specimens were stained using Delafield's haematoxylin and mounted in Canada balsam.…”

Temnocephala lutzi Monticelli (Platyhelminthes, Temnocephalida) ectosymbiont on two species of Trichodactylus Latreille (Crustacea, Decapoda, Trichodactylidae) from southern Brazil

“…Some specimens were fixed in cold A.F.A., under slight cover slip pressure, stained in Delafield's hematoxylin, cleared in cedar oil, and mounted in Canada balsam, for internal morphometry (AMATO & AMATO 2005).…”

Una especie nueva de Temnocephala (Platyhelminthes, Temnocephalida) comensal de Pomella megastoma (Mollusca, Ampullariidae) de Misiones, Argentina

“…The family Temnocephalidae (Platyhelminthes, Temnocephalida) includes 12 genera, of which only Temnocephala Blanchard, 1849 is represented in South and Central America. Twenty-three species of Temnocephala are currently recognized (Damborenea and Cannon, 2001;Amato et al, 2003Amato et al, , 2006Amato and Amato, 2005;Volonterio, 2007), and they are associated with a wide range of hosts (Mollusca Ampullariidae, Crustacea Decapoda, Insecta Hemiptera, and Chelonia).…”