Abaetetuba

Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2017, Four new species of Callibaetis Eaton (Ephemeroptera: Baetidae), nymphal description of Callibaetis (Abaetetuba) fasciatus (Pictet) and keys for South American species of Callibaetis, Zootaxa 4250 (3), pp. 229-261 : 260

Key to identify the nymphs of the subgenus Abaetetuba

1. Metanotum without spines ( Fig. 1 D)......................................................................2

1’. Metanotum with spines ( Fig. 10 H in Cruz et al. 2017)......................................................... 4

2. One row of setae on basal part of inner-dorsal row of maxilla (similar to Fig. 21 C)................... C. (Ab.) fasciatus

2’. Two rows of setae on basal part of inner-dorsal row of maxilla ( Figs 21 A and 21B)................................. 3

3. Inner margin of labial palp segment III tapering towards the base ( Fig. 2 G).................. .. C. (Ab.) cochlea sp. nov.

3’. Inner margin of labial palp segment III subparallel to outer margin ( Fig. 13 A in Nieto & Cruz 2013)..... C. (Ab.) dominguezi

4. One row of setae on basal part of inner-dorsal row of maxilla (similar to Fig. 21 C)..................... C. (Ab.) sellacki

4’. Two rows of setae on basal part of inner-dorsal row of maxilla ( Figs 21 A and 21B)................................ 5

5. Apex of paraglossa rounded and with one tuft of thin setae (similar to figure 6G)....................... C. (Ab.) pollens

5’. Apex of paraglossa truncated and with three tufts of thin setae (similar to figure 1H)................... C. (Ab.) capixaba

Figures

FIGURE 1. Callibaetis (Abaetetuba) cochlea sp. nov. nymph. A. dorsal view; B. dorsal view, with dark color pattern; C. ventral view; D. detail of metanotum.

FIGURE 2. Callibaetis (Abaetetuba) cochlea sp. nov. nymph. A. antenna; B. labrum (left v. v., right d. v.); C. right mandible; D. left mandible; E. maxilla; F. hypopharynx; G. labium (left v. v, right d. v.); H. detail of paraglossa apex. Black arrows: tufts of thin setae.

FIGURE 10. Callibaetis (Aiso) calophenigyn sp. nov. nymphs. A. antenna; B. labrum (left v. v., right d. v.); C. right mandible; D. left mandible; E. maxilla; F. hypopharynx; G. labium (left v. v., right d. v.)

FIGURE 13. Callibaetis (Callibaetis) molinerii sp. nov. imagoes. A. dorsal view of male; B. lateral view of male; C. ventral view of male; D. dorsal view of female; E. lateral view of female; F. ventral view of female; G. forewing of male; H. hind wing of male; I. forewing of female; J. hind wing of female; K. genitalia. Black arrow: marginal intercalary vein.

FIGURE 21. Types of maxillae in species of Callibaetis, frontal view of apex. A. C. (Abaetetuba) capixaba; B. C. (Abaetetuba) cochlea sp. nov.; C. C. (Callibaetis) guttatus. Black arrows: rows of setae on inner-dorsal margin.