Caenis fittkaui Malzacher 1986

Caenis fittkaui Malzacher, 1986 (Figs 6G, H) Caenis fittkaui Malzacher, 1986: 91; Salles et al. 2010: 304; Shimano et al. 2011: 245; Lima et al. 2015a: 3; Lima & Boldrini, 2016: 3; Lima et al. 2016b: 215. Distribution. Brazil: states of Bahia, Espírito Santo, Mato Grosso, Pará, Pernambuco, and Roraima. New record: Piauí State. Material examined. One ♂ imago, Brazil, Piauí, Campo Maior, Lagoa do Arain, S4°50’26.1”, W42°10’50.1”, 119 m a.s.l., 21.ix.2014, Lima, L. R. C. col. (CEHJ). One ♂ imago, Brazil, Piauí, Piracuruca municipality, Rio Piracuruca, Prainha, S03°56’15.9”, W41º42’36.1’’, 74 m a.s.l., 10.xii.2015, Silva, A.P.S. col. (CEHJ). One ♂ imago, Brazil, Piauí, Barras municipality, Rio Marataoan, Pesqueiro, P 1, S04°15’13.7”, W42°17’19.1”, 84 m a.s.l., 10.xii.2015, Silva, A.P.S. col. (CEHJ). Comments. Caenis fittkaui can be differentiated from other species of Caenis by the following characters: apex of forceps sharp and directed posteriorly, lobes of penis fused, forming a rounded head and with small tubercles distributed on the ventral surface (adapted from Malzacher 1986).
Published as part of Nascimento, Stênio R. S., Rodrigues, Jackson A. O., Ale-Rocha, Rosaly & Lima, Lucas R. C., 2022, New species and records of Caenidae Newman, 1853 (Insecta: Ephemeroptera) from Northeastern Brazil, pp. 110-122 in Zootaxa 5133 (1) on pages 118-119, DOI: 10.11646/zootaxa.5133.1.5, http://zenodo.org/record/6521359
{"references":["Malzacher, P. (1986) Caenidae aus dem Amazonasgebiet (Insecta, Ephemeroptera). Spixiana, 9, 83 - 103.","Salles, F. F, Nascimento, J. M. C., Massariol, F. C., Angeli, K. B., Barcelos, S. P., Rudio, J. A. & Boldrini, R. (2010) Primeiro levantamento da fauna de Ephemeroptera (Insecta) do Espirito Santo, Sudeste do Brasil. Biota Neotropica, 10 (1), 293 - 307. https: // doi. org / 10.1590 / S 1676 - 06032010000100025","Shimano, Y., Salles, F. F. & Cabette, H. S. R. (2011) Ephemeroptera (Insecta) from east of Mato Grosso State, Brazil. Biota Neotropica, 11, 239 - 253. https: // doi. org / 10.1590 / S 1676 - 06032011000400021","Lima, L. R. C., Salles, F. F. & Pinheiro, S. (2015 a) New records of mayflies (Ephemeroptera: Insecta) from Pernambuco state, northeastern Brazil. Check List, 11, 1 - 7. https: // doi. org / 10.15560 / 11.3.1652","Lima, L. R. C. & Boldrini, R. (2016) First records of small squaregilled mayflies (Ephemeroptera, Caenidae) from the state of Roraima, Northern Brazil. Check List, 12 (4), 1 - 5. https: // doi. org / 10.15560 / 12.4.1919","Lima, L. R. C., Knapp, W. & Docio, L. (2016 b) New records of mayflies (Insecta: Ephemeroptera) from Bahia State, Northeastern Brazil. Entomotropica, 31, 212 - 220."]}