A new species of Macrothrix (Crustacea, Branchiopoda, Macrothricidae) from the Neotropics with description of the marthae-group

Autor(es)

Sousa, Francisco Diogo R. ^{[1, 2]} ; De Freitas, Daniele Fatima Bastos ^[3] ; Perbiche-Neves, Gilmar ^[4] ; Bertini, Giovana ^[3]

Afiliação do(s) autor(es)

^[1] Univ Brasilia UnB, Programa Posgrad Zool, Campus Univ Darcy Ribeiro, BR-70910900 Brasilia, DF - Brazil

^[2] Univ Fed Jatai UFJ, Unidade Acad Especial Ciencias Biol, Lab Taxon Anim, BR 364 Km 195 3800, BR-75801615 Jatai, Go - Brazil

^[3] Sao Paulo State Univ, Lab Biol & Culture Crustaceans LABCRUST, Campus Registro, Rua Nelson Brihi Badur 430, BR-11900000 Registro, SP - Brazil

^[4] Univ Fed Sao Carlos, CCBS, Dept Hidrobiol, Lab Plancton, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4926, n. 1, p. 93-104, FEB 4 2021.
• Citações Web of Science: 0

Resumo

Publications of the last three decades demonstrated the existence of some compact species groups within the Macrothrix Baird genus (Cladocera: Macrothricidae). Many species were included in hirsuticornis-group, laticornis-group, roseatriserialis-group and paulensis-group, but not in Macrothrix marthae group. It has a peculiar set of morphological traits not observed in any other species, so far. Studying material from Ribeira de Iguape River, Brazil, we found some individuals that resemble M. marthae, which represent a new species described herein. Macrothrix lourdesae sp. nov shares with M. marthae similar morphology of Inner Distal Lobe setae and the same modifications on the fourth and fifth limbs. The main difference between them is related to the number of setae in the exopodite of the third limb. Observing the high number of morphological traits shared, it is possible to indicate that M. lourdesae sp. nov and M. marthae form a separate species group within the genus. (AU)

• Processo FAPESP: 13/06457-2 - Diversidade e distribuição espaço-temporal de larvas e adultos de camarões carídeos no curso inferior da Bacia do Rio Ribeira de Iguape (SP)
• Beneficiário: Giovana Bertini
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/22995-8 - Comunidade mesozooplanctônica do canal Valo Grande, Iguape, litoral sul do Estado de São Paulo
• Beneficiário: Daniele Fatima Bastos de Freitas
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica