Baetodes cerejeiras, 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 : 111

Baetodes cerejeiras sp. nov.

( Figs 4–6 )

Diagnosis. Nymph. I) labrum dorsal arc with reduced setae number (eight), 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, and metanonum slightly elevated; iv) coxal gills single, with one segment ( Figs 4E , 5D ), trachea pigmented at base; v) forefemora dorsal margin with row of long, thin, simple setae alternating with six robust and clavate setae ( Fig. 6I ); vi) abdominal tubercles on segments I to IX; vii) gills oblong, tracheae pigmented at base, not extending from main trunk to margins.

Figures

FIGURE 4. Baetodes cerejeiras sp. nov. Habitus of nymphs (paratypes): A, dorsal, male last instar; B, dorsal, male with wing pad; C, ventral, male with wing pad; D, lateral, male with wing pad; E, detail of thorax and abdomen, ventral view; arrows indicate coxal gills.

FIGURE 5. Baetodes cerejeiras sp. nov. Habitus of nymphs (holotype): A, dorsal; B, ventral; C, lateral; D, detail of thorax and abdomen, ventral view; arrows indicate coxal gills.

FIGURE 6. Baetodes cerejeiras 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.