Oligoneuria (Yawari) anatina sp. nov. (Ephemeroptera: Oligoneuriidae) from the extreme north of Brazil

Abstract

Oligoneuria (Yawari) anatina sp. nov. is described and illustrated based on nymphs and imagoes collected in the municipality of Serra do Navio, state of Amapá, Brazil. The main characteristics that can be used to distinguish the new species from other species of the genus are, in imagoes: 1) forewing with spectral cross veins between IRS and MP2 (male) or between IRS and IMP (female), 2) posterior margin of styliger plate distally rounded and with paired rounded projections; in nymphs: 1) vertex of head with two pairs of tubercles, 2) lateral margin of anterior projection of head straight. Cytochrome Oxidase subunit I (COI) sequences were used to associate male imago and immature stages of the new species.

Unmasking a gap: A new oligoneuriid fossil (Ephemeroptera: Insecta) from the Crato Formation (upper Aptian), Araripe Basin, NE Brazil, with comments on Colocrus McCafferty

“…There are several known instances of associations between larvae and adults that were later proved to be mistaken [ 10 ]. Even when dealing with extant individuals, it is hard to associate larvae and imagoes based only on morphological characters, and in most situations a precise identification can be made only by rearing them [ 10 ] or using DNA tools such as barcoding [ 17 , 18 ]. There are oligoneuriid larval individuals described for the Crato Formation (the holotypes of Colocrus indivicum McCafferty, 1990—AMNH 43484 and Colocrus magnum Staniczek, 2007—SMNS 66624).…”

Direct analysis of vicariance in Neotropical mayflies (Ephemeroptera)

“…Publications referring to Neotropical mayfly phylogenies at the species level were selected. Character matrices were updated, including the following new species or new life stages described since their original publication: 1) Baetodes complex (Baetidae), 15 species from eight genera and Baetodes treated at the genus level (Nieto 2016, 1 species added here, see below); 2) Callibaetis (Baetidae), 37 species, including 28 species of the genus (Cruz et al 2017); 3) Brasilocaenis and Caenis (Caenidae), 20 species (lima et al 2019); 4) Simothraulopsis (leptophlebiidae), 14 terminals including 9 species of the genus (Nascimento et al 2017); 5) Farrodes (leptophlebiidae), with 23 species (Domínguez 1999, Domínguez andZuñiga 2009); 6) Allenhyphes-Traverhyphes group (leptohyphidae), 21 species (Molineri 2004) and 2 additional species included here; 7) Oligoneuria (Oligoneuriidae), 12 species (Salles et al 2014), of which one was described later (Massariol and Cruz 2015) and was added here; 8) Asthenopodinae (Polymitarcyidae), 17 species (Molineri et al 2015); 9) Campsurus alfibilum and major groups (Polymitarcyidae), 13 species (Molineri and Salles 2013); 10) Tortopus (Polymitarcyidae); and 11) Tortopsis (Polymitarcyidae) both from , with 21 species (plus 2 species included here).…”