Callibaetis (Abaetetuba) capixaba Cruz, Salles & Hamada 2009

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2017, Additions and corrections to the systematics of mayfly species assigned to the genus Callibaetis Eaton 1881 (Ephemeroptera: Baetidae) from South America, Zootaxa 4231 (4), pp. 500-534 : 503

Callibaetis (Abaetetuba) capixaba Cruz, Salles & Hamada 2009

( Figs. 2 A–2G)

Callibaetis capixaba Cruz, Salles & Hamada 2009: 31 ; Cruz et al. 2014:11.

Known stages: I ♀♂, N

Diagnosis. Male imago: 1) dorsal portion of turbinate eyes oval ( Fig. 2 A); 2) dorsal portion of turbinate eyes in lateral view without constriction; 3) dorsal portion of turbinate eyes stalk height 0.9 × height of dorsal portion; 4) turbinate portion of compound eyes (in lateral view) with anterior and posterior margins divergent; 5) forewing hyaline (Fig. 29 in Cruz et al. 2009); 6) marginal intercalary veins paired (Fig. 29 in Cruz et al. 2009); 7) hind wing hyaline (Fig. 30 in Cruz et al. 2009); 8) costal process of hind wing rounded (Fig. 30 in Cruz et al. 2009); 9) marginal intercalary veins on hind wing absent (Fig. 30 in Cruz et al. 2009); 10) abdominal sterna with pair of medioanterior and medioposterior sigilla weak pigmented ( Fig. 2 B); 11) abdominal sterna light brown with many red spots and two red marks, one lateral and other sublateral on anterior margin ( Fig. 2 B); 12) forceps segment I wide at base ( Fig. 2 F); 13) forceps segment III oval ( Fig. 2 F).

Female imago: 1) forewing hyaline (Fig. 33 in Cruz et al. 2009); 2) marginal intercalary veins paired (Fig. 33 in Cruz et al. 2009); 3) hind wing hyaline (Fig. 34 in Cruz et al. 2009); 4) costal process of hind wing rounded (Fig. 34 in Cruz et al. 2009); 5) marginal intercalary veins on hind wing absent (Fig. 34 in Cruz et al. 2009); 6) abdominal sterna with pair of medioanterior and medioposterior sigilla weak pigmented ( Fig. 2 D); 7) abdominal sterna reddish brown with many red spots and two red marks, one lateral and other sublateral on anterior margin ( Fig. 2 D).

Mature nymph: 1) distal margin of labrum medially with long, fine and apically bifid setae ( Fig. 2 G); 2) maxillary palp reaching apex of galea-lacinia (Fig. 41B in Cruz et al. 2009); 3) two rows of setae on basal part of inner-dorsal row of maxilla; 4) paraglossa subrectangular with apex truncated (Fig. 42A in Cruz et al. 2009); 5) paraglossa with three tufts of fine and simple; 6) metanotum with spines; 7) foretarsus anterior surface without spine-like setae (Fig. 43A in Cruz et al. 2009); 8) hind claw with minute denticles (Fig. 44B in Cruz et al. 2009).

Comments. Many species of the genus Callibaetis have a history of poor, inaccurate, or even absent, illustrations. In order to maximize the possibility of a reliable identification, here we present photographs of the complete dorsal and ventral habitus of the male and female imagoes ( Figs. 2 A–2D), a photograph of the ventral view of the male genitalia, mounted on a slide ( Fig. 2 F), photographs of the dorsal habitus of the nymphal exuviae ( Fig. 2 E) and a detailed illustration of the labrum (dorsal and ventral views) ( Fig. 2 G). For more, see morphological comments under C. (A.) pollens .

Material examined. Callibaetis capixaba , female imago with corresponding nymphal exuviae (holotype), BRAZIL, Espírito Santo, Santa Teresa , 19°52’30.9” S / 40°32’07.4” W, pool, sand, 26.x.2008, F.F. Salles coll., INPA ; one male imago (reared), 20 nymphs, BRAZIL, Espírito Santo State, Santa Teresa Municipality , 19° 52' 30.9'' S / 40° 32' 07.4' 'W, pool, sand, 26.x.2008, F.F. Salles coll., CZNC ; one male imago and one female imago (both reared), Espírito Santo, Santa Teresa, Reserva Biológica Augusto Ruschi , 19°55’30.1” S / 40°33’21.9” W, pool, sand, 26.ii.2009, F.F. Salles coll., INPA ; one female imago, Santa Catarina, Vargem Bonita , 26°53’48.27” S / 51°42'12.24” W, 2005, E. Raimundi coll., CZNC .

Distribution. Brazil: Espírito Santo; Santa Catarina.

Figures

FIGURE 2. Callibaetis (Abaetetuba) capixaba imagoes and nymphs. A. dorsal view of male imago; B. ventral view of male imago; C. dorsal view of male imago; D. ventral view of male imago; E. abdomen of nymphal exuvia; F. genitalia; G. labrum (from nymphal exuvia of holotype) (left d. v., right v. v.).