Baetodes vermelho, Cruz & De Lima & Nascimento & Souza & Hamada, 2023

Cruz, Paulo Vilela, De Lima, Cláudia R. T., Nascimento, Stênio R. S., Souza, Marcia Regina De & Hamada, Neusa, 2023, Two new species of Baetodes Needham & Murphy, 1924 with an updated checklist of Baetidae (Ephemeroptera) of Rondônia state, Brazil, Zootaxa 5311 (1), pp. 105-122 : 108

Baetodes vermelho sp. nov.

( Figs 2–3 )

Diagnosis. Nymph. i) labrum dorsal arc with reduced number (seven) of setae, alternating one long and pointed and one short and blunt; ii) glossa apex with one robust and pectinate seta; iii) posterior margin of pronotum slightly elevated, meso- and metanonum without tubercles; iv) coxal gills single, with medial constriction ( Fig. 2E ), and pigmented trachea; v) forefemur dorsal margin with row of long, thin, simple setae alternating with nine robust and pointed (non-clavate) setae ( Fig. 3I ); vi) abdominal tubercles on segments I to VI; vii) gills long as next two abdominal segments, tracheae strongly pigmented, extending from main trunk to margins.

Figures

FIGURE 2. Baetodes vermelho sp. nov. Habitus of nymphs (holotype): A, dorsal; B, lateral; C, ventral; D, detail of abdomen, lateral view; E, details of thorax and abdomen, ventral view; arrows indicate coxal gills.

FIGURE 3. Baetodes vermelho sp. nov. Nymph (holotype).A, labrum (left: v.v.; right: d.v.); B, left mandible; C, right mandible; D, hypopharynx; E, maxilla; F, labium (left: v.v.; right: d.v.); G, labium, detail of glossa; H, foreleg; I, foreleg, detail of dorsal margin; J, surface of tergum IV.