Palaemon yuna Carvalho, Magalhaes &amp; Mantelatto 2014
Creators: name: Santos, Maria Aparecida Laurindo dos
name: Castro, Patrícia Madedo de
name: Magalhães, Célio
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Palaemonidae
Palaemon
Palaemon yuna

description: <i>Palaemon yuna</i> Carvalho, Magalhães &amp; Mantelatto, 2014 (Figs 4E, F, 11) <b>Identification characters</b> (Fig. 4E, F). Rostrum slender, slightly curved upwards distally, overreaching distal margin of scaphocerite; rostral formula: 6–10(1 post-orbital tooth)/2–5. First antennular segment with projection of its anterolateral margin reaching the distal margin of second segment; anterolateral spine of first antennular segment not overreaching one third of the projection of the anterolateral margin.Carapace smooth, with antennal and branchiostegal teeth present, branchiostegal suture situated between both teeth; abdomen with pleura of second somite enlarged and overlapping pleuron of first and third somites. Telson with posterior margin distinct, ending in a small acute point, overreached by inner pair of posterolateral spines. P2 similar in shape and size, overreaching scaphocerite with approximately half of the distal part of carpus. <b>Material examined.</b> 1 male, 1 female (MIRR 83), Boa Vista, BR 174 road between Boa Vista and Mucajaí, 02°46ʹ08.53ʺ N, 060°39ʹ22.63ʺ W, 28-II-2007, colls. L.F. R. Guterres, P.M. Castro and J.C.P. Mota; 2 spec. (INPA 2408), Caracaraí, Parque Nacional do Viruá [01°48ʹ51.28ʺ N, 061°08ʹ04.18ʺ W], 13-VII-2008, coll. J.D. do Vale; 2 males (MIRR 2385), Caracaraí, Terra Preta, igarapé Marixi, tributary of rio Xeriuini, tributary of rio Branco, 00°50ʹ52.916ʺ N, 061°57ʹ51.778ʺ W, 09-VI-2013, coll. F.C. Zanetti; 1 male (INPA 2352), Rorainópolis, igarapé on vicinal 20, tributary of rio Jauaperi, Colinas, 00°37ʹ16.7ʺ N, 060°29ʹ53.9ʺ W, 21-XII-2014, colls. M.A.L. Santos, B.C.A. Santos and N.L. Ferreira; 1 male, 2 females (INPA 2326), Caracaraí, Terra Preta, rio Xeriuni, 00°33ʹ54.731ʺ N, 061°57ʹ9.945ʺ W, 25-III-2014, colls. M.A.L. Santos e F.C. Zanetti; 1 female (INPA 2303), Caracaraí, Caicubí, igarapé Caicubi, tributary of rio Branco, 01°0ʹ52.221ʺ S, 62°6ʹ15.601ʺ W, 06-IX-2011, colls. P.M. Castro and A.A. Otaviano. <b>Distribution.</b> Brazil (Amazonas, Roraima [new record]) (Carvalho et al. 2014; this study). The distribution in Roraima is depicted in Figure 11. <b>Remarks.</b> The morphology of our specimens agrees with the description provided by Carvalho et al. (2014). Until recently, <i>Palaemon carteri</i> (Gordon, 1935) was considered to be distributed in the Negro River basin (Magalhães and Pereira 2007). However, in a study on the morphological and molecular differentiation of two species of <i>Palaemon</i> from the Amazon basin, Carvalho et al. (2014) concluded that the populations distributed in the Negro River basin were distinct and described a new species, <i>Palaemon yuna</i>, from this basin. The records presented herein indicate that the distribution of this species also encompasses the Branco River basin.
description: Published as part of <i>Santos, Maria Aparecida Laurindo dos, Castro, Patrícia Madedo de &amp; Magalhães, Célio, 2018, Freshwater shrimps (Crustacea, Decapoda, Caridea, Dendrobranchiata) from Roraima, Brazil: species composition, distribution, and new records, pp. 21-35 in Check List (Washington, D. C.: 1974) (Washington, D. C.: 1974) 14 (1)</i> on page 29, DOI: 10.15560/14.1.21
description: {"references": ["Carvalho FL, Magalhaes C., Mantelatto FL (2014) Molecular and morphological differentiation between two Miocene-divergent lineages of Amazonian shrimps, with the description of a new species (Decapoda, Palaemonidae, Palaemon). Zookeys 457: 79 - 108. https: // doi. org / 10.3897 / zookeys. 457.6771", "Gordon I (1935) On new or imperfectly known species of Crustacea Macrura. Journal of the Linnean Society of London, Zoology 39 (266): 307 - 351. https: // doi. org / 10.1111 / j. 1096 - 3642.1935. tb 00075. x", "Magalhaes C, Pereira, G (2007) Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions. Biota Neotropica 7 (2): 111 - 124."]}