Weyenbergh 1883 : 164 Weyenbergh 1883 : 167 Eaton 1883 : 198 Gillies 1990 : 27 Nieto 2008 : 237 Domínguez et al. 2006 : 116 Callibaetis trifasciatus Navás 1915b : 120 Ulmer 1921 : 246 Navás 1932 : 82 Navás 1923 : 2 Navás 1930b : 360 Callibaetis ( Abaetetuba ) sellacki Callibaetis gloriosus Additions and corrections to the systematics of mayfly species assigned to the genus Callibaetis Eaton 1881 (Ephemeroptera: Baetidae) from South America Cruz, Paulo Vilela Salles, Frederico Falcão Hamada, Neusa Zootaxa 2017 4231 4 500 534 PM9C Weyenbergh 1883 Weyenbergh 1883 [151,792,573,599] Insecta Baetidae Callibaetis Animalia Ephemeroptera 21 521 Arthropoda species sellacki Abaetetuba     Cloe sellacki  Weyenbergh 1883: 164. (comb. by Eaton 1883)    Cloe lorentzii  Weyenbergh 1883: 167. (syn. by Gillies 1990)    Callibaetis sellacki  Eaton 1883: 198;  Gillies 1990: 27;  Nieto 2008: 237;  Domínguez et al.2006: 116; Cruz et al.2014: 60.  Callibaetis trifasciatus(partim)  Navás 1915b: 120. (misidentification, the name is not syn. Gillies 1990; McCafferty 1996)  Callibaetis fasciatus  Ulmer 1921: 246. (misidentification, the name is not syn. Gillies 1990)  Callibaetis lineatus  Navás 1932: 82. (syn. by Gillies 1990)    Baetis gloriosus  Navás 1923: 2. syn. nov.    Callibaetis gloriosus  Navás 1930b: 360. syn. nov.(comb. by Navás 1930b)   FIGURE 15.  Callibaetis( Abaetetuba) sellackinymphs. A. dorsal view; B. ventral view.   FIGURE 16.  Callibaetis gloriosusfemale subimago syn. nov.(holotype). A. label of type; B. dorsal view.  Known stages. I♀♂, N   Diagnosis. Male imago:1) dorsal portion of turbinate eyes oval (Fig. 173 inCruz et al.2014); 2) dorsal portion of turbinate eyes in lateral view without constriction; 3) dorsal portion of turbinate eyes stalk height 0.21 × height of dorsal portion; 4) turbinate portion of compound eyes (in lateral view) with anterior and posterior margins divergent; 5) forewing with two brown bands, apical band parallel to posterior margin (Fig. 176 inCruz et al.2014); 6) marginal intercalary veins paired (Fig. 176 inCruz et al.2014); 7) hind wing with small marks of pigmentation (Fig. 177 inCruz et al.2014); 8) costal process of hind wing pointed (Fig. 177 inCruz et al.2014); 9) marginal intercalary veins on hind wing present (Fig. 177 inCruz et al.2014); 10) abdominal sterna with pair of medioanterior and medioposterior sigilla strongly pigmented; 11) abdominal sterna washed with red spots and with one anterolateral mark; 12) forceps segment I wide at base (Fig. 175 inCruz et al.2014); 13) forceps segment III elongate (Fig. 175 inCruz et al.2014).   Female imago:1) forewing with two bands, apical band parallel to posterior margin (Fig. 179 inCruz et al.2014); 2) marginal intercalary veins paired (Fig. 179 inCruz et al.2014); 3) hind wing with small marks of pigmentation (Fig. 180 inCruz et al.2014); 4) costal process of hind wing pointed (Fig. 180 inCruz et al.2014); 5) marginal intercalary veins on hind wing present (Fig. 180 inCruz et al.2014); 6) abdomen covered by red spots (Figs. 178 and 181 inCruz et al.2014); 7) abdominal sterna with pair of medioanterior and medioposterior sigilla strongly pigmented (Fig. 181 inCruz et al.2014).  Mature nymph:1) distal margin of labrum medially with simple spine-setae (Fig. 61B in Nieto 2008); 2) maxillary palp 1.5 × the length of galea-lacinia (Fig. 65 in Nieto 2008); 3) crown of galea-lacinia with two rows of setae; 4) paraglossa with rounded apex (Fig. 66A in Nieto 2008); 5) paraglossa with one tuft of fine and simple setae on apex; 6) metanotum with spines; 7) foretarsus anterior surface with spine-like setae (Fig. 67 in Nieto 2008); 8) hind claw denticles smaller than foreclaw denticles (Fig. 69 in Nieto 2008).   Comments.Until now,  C. gloriosusis considered to be a junior synonym of  Callibaetis( A.) fasciatus. After studying the typeof  C. gloriosus, we observed that the most conspicuous diagnostic character of  C.( A.) sellackiis present in  C. gloriosus: an apical band on the female forewing, parallel to the posterior margin. Thereby,  C. gloriosusis proposed here as junior synonym of  C.( A.) sellacki. The typespecimens of  C. gloriosuspossess damaged forewings ( Fig. 16B), but the apical band is visible and comparable with those presented by Cruz et al.(2014: Figs. 27D, 27G). We present figures of the dorsal and ventral habitus of the nymphs of  C.( A.) sellacki( Figs. 15A–15B) and the typeof  C. gloriosus( Figs. 16A–16B).     Materialexamined.  Callibaetis gloriosus,female subimago ( type), CHILE, Marga-Marga, Ian1919, MZB;   Callibaetis lineatus,female imago ( type), CHILE, Marga Marga,  iii.1931, MZB;   Callibaetis trifasciatus,male imago ( type), ARGENTINA, Prov. Buenos Aires, C. Bruchcoll., MZB; two nymphs (one mounted on slides), ARGENTINA, Buenos Aires, Tandil, A◦ Quequén Chico,  6.i.1983, E. Domínguezcoll., INPA; one male subimago, BRAZIL, Rio Grande do Sulstate, Pelotasmunicipality,  10.xi.1959, Biezanko, M.1960-3, NHM.   Distribution. Argentina: Bueno Aires. Chile: Marga-Marga. Brazil: Rio Grande do Sul; São Paulo. 1434647630 [199,1431,620,645] MZB Material Chile Ian Marga-Marga 23 523 1 holotype 1434647644 [151,1088,655,680] 1931-03 MZB Chile Marga Marga 23 523 1 holotype 1434647641 MZB Prov. Buenos Aires, C. & Bruch Argentina Buenos Aires 23 523 1 Buenos Aires holotype 1434647646 1983-01-06 INPA Tandil, A & E. Dominguez Argentina Quequen Chico 23 523 1 Buenos Aires holotype 1434647648 1959-11-10 NHM Biezanko, M. Brazil Pelotas 23 523 1 Rio Grande do Sul holotype