Freshwater crabs (Decapoda: Brachyura: Pseudothelphusidae, Trichodactylidae) from the state of Roraima, Brazil: species composition, distribution and new records

Distribution and species diversity of freshwater crabs of the family Pseudothelphusidae in Colombia (Crustacea: Decapoda: Brachyura)

“…Based on the faunistic and taxonomic studies by Magalhães (1990;2005;2009;, Magalhães and Pereira (2007), Magalhães and Türkay (2010), Pedraza et al (2016), Pedraza and Tavares (2015), Pereira et al (2009;, Suárez (2015), Magalhães et al (2014;Zanetti et al (2018), one can count the number of pseudothelphusid species occurring in the Orinoco and Brazilian Amazon basins. Cross-referencing our data with the number of species obtained from those studies, we can notice that (i) the Negro river, the largest northern tributary of the Amazon river in Brazil, which also includes the Branco river drainage, has thirteen species distributed in four genera: Fredius (8 spp.…”

A new species of freshwater crab genusFrediusPretzmann, 1967 (Crustacea: Brachyura: Pseudothelphusidae) from a naturally isolated orographic forest enclave within the semiarid Caatinga in Ceará, northeastern Brazil

“…Magalhães, 2009 Brazil (Amazon River basin) Lowland streams 36 to 73 Magalhães, 2009 F. adpressus Rodríguez & Pereira, 1992 Venezuela (Orinoco River basin) Lowland streams 100 Rodríguez & Pereira, 1992F. beccarii Coifmann, 1939 Streams (igarapés) 50 to 752 Rodriguez & Campos, 1998;Cumberlidge, Alvarez & Villalobos, 2014;Mora-Day, Magalhães & Souki, 2009;Magalhães et al, 2014;Zanetti, Castro & Magalhães, 2018F. buritizatilis Magalhães & Mantellato in Magalhães et al, 2014 Brazil (Madeira River basin) Buritizal (palm) fields 150 Magalhães et al, 2014F.…”

“…Streams (iIgarapés) and along river margins 151 to Rodríguez & Campos, 1998 ;Magalhães & Rodríguez, 2002 ;Cumberlidge, Alvarez & Villalobos, 2014;Magalhães et al, 2014;Zanetti, Castro & Magalhães, 2018F. granulatus Rodriguez & Campos 1998 Colombia (Amazon River basin) Lowlands 180 to Rodriguez & Campos, 1998;Cumberlidge, Alvarez & Villalobos, 2014;Cumberlidge, Alvarez & Villalobos, 2014;Zanetti, Castro & Magalhães, 2018; F. platyacanthus Rodríguez & Pereira, 1992 Brazil, Venezuela (Atlantic rivers basin)…”

“…Streams (igarapés) and mountain areas 106 to 1229 Rodríguez & Pereira, 1992;Cumberlidge, Alvarez & Villalobos, 2014;Magalhães et al, 2014;Zanetti, Castro & Magalhães, 2018F. reflexifrons Ortmann, 1897 Brazil, Venezuela, Suriname, French Guaiana, Peru, Guyana (Amazon and Atlantic rivers basins)…”

“…Lowland streams 37 to 200 Magalhães & Rodríguez, 2002;Magalhães et al, 2005 & Campos, 1998;Magalhães & Pereira, 2007;Cumberlidge, Alvarez & Villalobos, 2014;Magalhães et al, 2014;Zanetti, Castro & Magalhães, 2018 Magalhães et al (2014) performed a distance analysis based on 16S rRNA, in which F. reflexifrons was recovered as the sister taxa to (F. fittkauii (F. denticulatus (F. granulatus (F. buritizatilis (F. platyacanthus (F. denticulatus (F. stenolobus))))))). The discovery of F. ibiapaba n. sp.…”