Callibaetis ( Callibaetis ) willineri Navás 1933

Callibaetis ( Callibaetis) willineri Navás 1933 View in CoL

( Figs. 20 View FIGURE 20 A– 21I)

Callibaetis willineri Navás 1933: 115 View in CoL ; Gillies 1990: 30; Domínguez et al. 2006: 117; Nieto 2008: 240; Cruz et al. 2014: 63. Callibaetis alegre Traver 1944: 45 . (syn. by Gillies 1990)

Known stages. I ♀♂, N

Diagnosis. Male imago: 1) dorsal portion of turbinate eyes oval ( Fig. 20 View FIGURE 20 H); 2) dorsal portion of turbinate eyes in lateral view without constriction; 3) dorsal portion of turbinate eyes stalk height 0.75 × height of dorsal portion; 4) turbinate portion of compound eyes (in lateral view) with anterior and posterior margins divergent; 5) forewing hyaline ( Fig. 21 View FIGURE 21 G); 6) marginal intercalary veins paired ( Fig. 21 View FIGURE 21 G); 7) hind wing hyaline ( Fig. 21 View FIGURE 21 H); 8) costal process of hind wing rounded; 9) marginal intercalary veins on hind wing absent ( Fig. 21 View FIGURE 21 H); 10) abdominal terga VII – X darker ( Fig. 20 View FIGURE 20 H); 11) abdominal sterna covered with spots, all sterna with one medial mark on anterior margin ( Fig. 20 View FIGURE 20 G); 12) abdominal sterna with pair of medioanterior and medioposterior sigilla weak pigmented ( Fig. 20 View FIGURE 20 G); 13) forceps segment I wide at base ( Fig. 21 View FIGURE 21 I); 14) forceps segment III oval ( Fig. 21 View FIGURE 21 I).

Female imago: 1) forewing with C and Sc areas pigmented overpassing R1, after R2 pigmentation with large degree of intensity ( Figs. 21 View FIGURE 21 A, 21C, 21E); 2) marginal intercalary veins paired ( Figs. 21 View FIGURE 21 A, 21C, 21E); 3) hind wing usually with one brown mark near costal process ( Figs. 21 View FIGURE 21 B, 21D); 4) costal process of hind wing rounded ( Figs. 21 View FIGURE 21 B, 21D); 5) marginal intercalary veins on hind wing absent ( Figs. 21 View FIGURE 21 B, 21D, 21F); 6) abdominal terga I –VIII with anterolateral spot, terga II – IX with medial longitudinal mark, terga III, V and VII laterally with inverted V mark ( Figs. 20 View FIGURE 20 A, 20C, 20E); 7) abdominal sterna covered with spots, with one medial mark on anterior margin ( Figs. 20 View FIGURE 20 B, 20D, 20F); 8) abdominal terga with medial longitudinal mark ( Figs. 20 View FIGURE 20 B, 20D, 20F).

Mature nymph: 1) maxillary palp shorter than apex of galea-lacinia (Fig. 80 in Nieto 2008); 2) below maxillary palp insertion on outer margin without tuft of robust spine-like setae (Fig. 80 in Nieto 2008); 3) paraglossa with row of spine-like setae on ventral surface (Fig. 81 in Nieto 2008); 4) segment III of labial palp apically rounded (Fig. 81 in Nieto 2008); 5) metanotum without spines; 6) foretarsus anterior surface without spine-like setae (Fig. 82 in Nieto 2008); 7) hind claw denticles smaller than foreclaw denticles (Fig. 84 in Nieto 2008).

Comments. The nymphs of C. ( C.) willineri and C. ( C.) zonalis are similar, but they can be differentiated by the length of the maxillary palp, which is shorter than the galea-lacinia in C. ( C.) willineri and longer in C. ( C.) zonalis . Cruz et al. (2014) equivocally presented a female C. ( C.) willineri labeled as C. ( C.) guttatus (see more comments about similar species and its differentiation in C. ( C.) guttatus and C. ( C.) jocosus ).

We present photographs of the female imago and male imago ( Figs. 20 View FIGURE 20 A–20H).

The specimens studied by Navás (1915) from San Miguel, Buenos Aires, Argentina, were not found, thus a lectotype was not designated.

Material examined. One female imago, URUGUAY, San Gregorio , Ar. Orillo Rio Uruguay , 29.xi.1959, A. Mesa y San Martin, C. S. Carbonell coll., MZB ; one nymph and one female imago, URUGUAY, Flores, Ruta 14, Km 235, Gruta del Palacio , 16.v.2009, E. Morelli and C. Molineri cols.; one female imago, ARGENTINA, La Plata city, light of living room, N. Hamada coll., INPA ; two females and one male imago, BRAZIL, Rio Grande do Sul, Pelotas , 14.vi.2011, INPA ; four female reared, BRAZIL, Santa Catarina, Iraní - Ponte Serrada ( Lake next to Gas station ), BR 282, 26°18’11.4” S / 53°37’01.6” W, 649 m alt., 17.ix.2011, P.V. Cruz and N. Hamada cols., INPA GoogleMaps ; one female reared, BRAZIL, lake in Valcir Rodrigues farm, Derrubadas , 27°16’52.4” S / 53°49’17.0” W, 29.ix. 2011, 429m, P.V. Cruz and R. Boldrini cols., INPA GoogleMaps ; one male and female reared, BRAZIL, Rio Grande do Sul, Balneário das fontes, lake next to swimming pool, Derrubadas , 27°15’28.4” S / 53°52’33.4” W, 29.ix. 2011, 421 m. alt., P.V. Cruz and R. Boldrini cols., INPA GoogleMaps ; one female reared, BRAZIL, Paraná, PR 170,estrada de terra, Rondon farm, General Carneiro Pedra , 26°21’28.8” S / 51°22’21.5” W, 04.x.2011, 1059 m. alt., P.V. Cruz and R. Boldrini cols., INPA GoogleMaps .

Distribution. Argentina: Buenos Aires. Brazil: Paraná; Santa Catarina; Rio Grande do Sul. Uruguay: Flores.