Primeiro registro do gênero <i>Hyalella</i> (Amphipoda: Hyalellidae) para o estado de Santa Catarina, Brasil, com descrição de duas novas espécies

Reis, Giovanna O.; Penoni, Ludmila R.; Bueno, Alessandra A. P.

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Article • Biota Neotrop. 20 (2) • 2020 • https://doi.org/10.1590/1676-0611-BN-2019-0879 copiar

Primeiro registro do gênero Hyalella (Amphipoda: Hyalellidae) para o estado de Santa Catarina, Brasil, com descrição de duas novas espécies

Autoria SCIMAGO INSTITUTIONS RANKINGS

Resumo:

O gênero de anfípodes HyalellaSmith, 1874SMITH, S. 1874. The Crustacean of the fresh Waters of the United States - Synopsis of the higher fresh-water Crustacea of the Northern United States. Report of the Commissioner of Fishand Fisheries. 2: 637-665. é exclusivo das Américas, e a região Sul do Brasil apresenta a maior diversidade do gênero. Este artigo apresenta duas novas espécies de Hyalella para o estado de Santa Catarina, Brasil. Uma nova espécie do município de Palmeira é caracterizada por olhos ovais, ausência de flanges, placas epimerais não acuminadas, presença de três setas paposas laterais no artigo 4 na antena 2, ausência de setas plumosas no maxilípodo, presença de comb scales e ausência de setas serradas nos gnatópodos, presença de seta curva no ramo interno do urópodo 1 e ausência de setas laterais no télson. Uma nova espécie do município de Rio das Antas tem como principais características ausência de flanges, placas epimerais acuminadas, ausência de setas plumosas e unha distal no maxilípodo, presença de comb scales e ausência de setas serradas nos gnatópodos, presença de seta curva no ramo interno do urópodo 1 e ausência de setas laterais no télson. Aqui expandimos a distribuição e aumentamos o conhecimento morfológico e taxonômico do gênero.

Palavras-chave:
Crustacea; dulcícola; sistemática; taxonomia

Table 1. Differences and similarities between the two new species (H. catarinensis n. sp. and H. rioantensis n. sp.) and species recorded for southern Brazil. References: (1) In this paper; (2) Santos et al., 2008SANTOS, A.L.F., ARAUJO, P.B. & BOND-BUCKUP, G. 2008. New species and new reports of Hyalella (Crustacea, Amphipoda, Dogielinotidae) from Argentina. Zootaxa. 1760: 24-36. https://doi:10.11646/Zootaxa.1760.1.2
https://doi:10.11646/Zootaxa.1760.1.2... ; (3) Bousfield, 1996BOUSFIELD, E.L. 1996. A contribution to the reclassification of Neotropical freshwater hyalellid amphipods (Crustacea: Gammaridae: Talitroidea). Bolletino del Museo Civico di Storia Naturale de Verona. 20: 175-244. ; (4) González et al., 2006GONZÁLEZ, E.R., BOND-BUCKUP, G. & ARAUJO, P.B. 2006. Two new species of Hyalella from Southern Brazil (Amphipoda: Hyalellidae) with a taxonomic key. J. Crustacean Biol. 26(3): 355-365. https://doi.org/10.1651/C-2599.1
https://doi.org/10.1651/C-2599.1... ; (5) Grosso & Peralta, 1999GROSSO, L.E. & PERALTA, M. 1999. Anfípodos de agua dulce sudamericanos: revisión del género Hyalella Smith. I. Acta Zoologica Lilloana. 45(1): 79-98.; (6) Streck et al., 2017STRECK, M.T., CARDOSO, G.M., RODRIGUES, S.G., GRAICHEN, D.A.S & CASTIGLIONI, D.S. 2017. Two new species of Hyalella (Crustacea, Amphipoda, Hyalellidae) from state of Rio Grande do Sul, Southern Brazil. Zootaxa. 4337(2): 263-278. https://doi.org/10.11646/zootaxa.4337.2.5
https://doi.org/10.11646/zootaxa.4337.2.... ; (7) Bueno et al., 2011; (8) Colla & César, 2015COLLA, M. F. & CÉSAR, I.I. 2015. A new species of Hyalella (Crustacea, Amphipoda, Dogielinotidae) from the Atlantic Forest of Misiones, Argentina. Zookeys. 481: 25-38. https://doi:10.3897/zookeys.481.9037
https://doi:10.3897/zookeys.481.9037... ; (9) Bond-Buckup & Araujo, 1998BOND-BUCKUP, G. & ARAUJO, P.B. 1998. Hyalellamontenegrinae sp. n., um amphipoda de águas continentais do Sul do Brasil (Crustacea, Peracarida, Hyalellidae). Nauplius. 6: 53-59. ; (10) Streck-Marx & Castiglioni, 2019STRECK-MARX, M. & CASTIGLIONI, D.S. 2019. A new species of freshwater amphipod (Crustacea, Amphipoda, Hyalellidae) from state of Rio Grande do Sul, Southern Brazil. Biota Neotropica. 20(1): e20190802, 2020. https://dx.doi.org/10.1590/1676-0611-BN-2019-0802 (last access on 25/03/2020)
https://dx.doi.org/10.1590/1676-0611-BN-... ; (11) Cavalieri, 1968CAVALIERI, F. 1968. Hyalellapampeana sp. n., una nueva especie de afípodo de agua dulce (Gammarida: Hyalellidae). Neotropica. 14(45): 107-117. ; (12) González & Watling, 2003GONZÁLEZ, E.R. & WATLING, L. 2003a. A new species of Hyalella from Brazil (Crustacea: Amphipoda: Hyalellidae), with redescriptions of three other species in the genus. J. Nat. Hist. 37(17): 2045-2076. https://doi:10.1080/00222930210133237
https://doi:10.1080/00222930210133237... .

Species	Occurance (localities)	Body surface	Epimeral plates	Maxilla 1 Plumose setae in inner ramus	Male gnathopod 2 Propodus ratio	Male gnathopod 2 Comb scales	Male uropod 1 Inner ramus with curved setae	Male uropod 1 Number of apical seta on inner ramus	Male uropod 1 Ratio rami/ peduncle	Uropod 3 Number of setae apically	Uropod 3 Ratio ramus/ peduncle	Male Telson Format	Male Telson Setation
(1) H. catarinensis sp. nov.	Palmeira/SC	Smooth	Not accuminated	Absent	1.3x longer than wide	Yes, in carpal posterior lobe and propodus margin	Yes	4 cuspidate setae	Peduncle 1.6x longer than outer ramus and 1.6x than inner	7 simple setae	Ramus 3.3x shorter than peduncle	Round	3 apical cuspidate setae
(1) H. rioantensis sp. nov.	Rio das Antas/C	Smooth	Accuminated	Absent	1.3x longer than wide	Yes, in basis, ischium and carpal posterior lobe	Yes	5 cuspidate setae	Peduncle 1.1x longer than outer and subequal than inner	4 cuspidate setae	Ramus 1.3x longer than peduncle	Round	4 apical simple setae
(2) H. bonariensis	Salto, Buenos Aires, Argentina	Smooth	Not accuminated	Absent	1.25x longer than wide	Yes, only at the propodus margin	Yes	8 cuspidate setae with acessory seta + 2 cuspidate setae	Peduncle longer than rami	4 long simple setae + 4 shorter setae	No information	Quadrangular	2-3 apical cuspidate setae, sometimes with plumose setae
(3)H. brasiliensis	Prudentópolis/PR	Smooth	Accuminated	No information	No information	No information	Yes	No information	Peduncle longer than rami	Did not specify number of apical setae	Ramus longer than peduncle	Apically rounded	5-6 apical cuspidate setae
(4)H. castroi	São José dos Ausentes/RS	Smooth	Accuminated	Absent	No information	Yes, only at the propodus margin	Yes	No information	Peduncle longer than rami	>7	Peduncle wider than ramus	Apically rounded	8 distal simple setae
(5)H. curvispina	Tramandaí/RS	Smooth	No information	Present	No information	Yes, only at the propodus margin	Yes	No information	No information	No information	Subequal	Apically rounded	2 stout spines + several alender and shorter spines
(6) H. gauchensis	Palmeira das Missões/RS	Smooth	Not accuminated	Absent	1.4x longer than wide	Yes, in basis, isquium, merus, carpal posterior lobe and propodus	Yes	4 cuspidate setae	Peduncle 1.3x longer than rami	8 simple setae	Subequal	Apically rounded	6 apical cuspidate setae + 6 plumose setae apically
(6) H. georginae	Palmeira das Missões/RS	Smooth	Not accuminated	Absent	1.5x longer than wide	Yes, in basis, isquium, merus and propodus posterior margin of lobe	Yes	4 cuspidate setae	Peduncle 1.2x longer than rami	8 simple setae + 1 cuspidate seta	Subequal	Apically rounded	7 apical cuspidate setae w/ accessory seta + 4 plumose setae laterally
(7) H. kaingang	São Francisco de Paula/RS	With flanges	Accuminated	Absent	1.5x wider than long	No	Yes	2 cuspidate setae	Peduncle longer than rami	9-13 simple setae + 1 cuspidate seta with acessory seta	Ramus 1.1x shorter than peduncle	Round	6-7 distal simple setae + plumose setae laterally
(8) H. misionensis	Misiones/Argentina*	Smooth	Accuminated	Absent	No information	Yes, only at the propodus distoposterior border	No	5 cuspidate	Peduncle longer than rami	4-5 simple slender + one connate	Ramus wider than peduncle	Round	2 long simple setae on distal margin + 3 small setae
(9) H. montenegrinae	Aparados da Serra/RS	Smooth	No information	Present	No information	No information	Yes	2 robust 1 simple	No information	8-10 thin and long	Subequal	Apically rounded	7-9 apical 'farpada' setae + 3 plumose setae laterally
(10)H. palmeirensis	Palmeira das Missões/RS	Smooth	Accuminated	Absent	Length 1.5 times maximum width	Yes, only at the propodus posterior margin of lobe	Yes	2 cuspidate	Peduncle 1.2x longer than rami	3 cuspidate + 1 simple	Peduncle wider than ramus	Apically rounded	2 apical long simple setae + 6 plumose setae laterally
(11)H. pampeana	Arroio Vitel, Buenos Aires, Argentina	No information	No information	2 bipectinadas	Wider than long	No information	Yes	6	Peduncle 1.5x longer than rami	4-8 thin	Ramus longer than peduncle	Apically rounded	2-5 apical simple + 3 bipectinadas laterally
(4) H. pleoacuta	São José dos Ausentes/RS	With flanges	Accuminated	Absent	No information	Yes, in propodus distoposterior border and in palm margin	Yes	1 connate	Peduncle longer than rami	4 simple + 1 connate	Subequal	Round	2 long seta on distal margin + 1-2 shorter setae ocasionally
(12)H. pseudoazteca	Reserva Ecológica de Taim/RS	With flanges	Accuminated	Absent	No information	No information	No	5	Peduncle longer than rami	4 simple +1 connate	Ramus as longer as peduncle	Apically pointed	2 apical marginal simple setae

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[1] Corresponding author: Giovanna O. Reis, e-mail: gideoliveirareis@gmail.com