CLADOENDESIS OF EPHEMEROPTERA
PAGE UNDER CONSTRUCTION
Tetramerotarsata Liberevenata Turbanoculata
Anteropatellata Baetovectata Baetungulata - Mayobaetis)
Nomen hierarchicum: Mayobaetis/g(1) [g:1985]
In circumscription fits:
— subgen. Mayobaetis Waltz & McCafferty 1985a: 240
— gen. Mayobaetis: Lugo-Ortiz & McCafferty 1996
References. Mayo 1973 (Baetis ellenae): ; – Waltz & McCafferty 1985: ; – Lugo-Ortiz & McCafferty 1996: ?.
Autapomorphies of Mayobaetis.
() Larva is adopted to climb out of the water onto a rock and jump back to the water: legs are relatively shorter, thicker and stronger than in other baetids, that allows larva to crawl by a wet rock (while legs retain possibility to stretch back and press to the body when larva swims); abdomen is relatively larger and stronger than in other baetids, that allows larva to jump from a wet rock.
() On larval antenna pedicellus is attached to a distal-lateral angle of scapus, so scapus has a free projected distal-median angle, which bears stout protuberances; similar protuberances on median side of pedicellus.
() Larval crercus with one large lateral spine-like seta near posterior margin of each segment.
Characters of Mayobaetis of unclear phylogenetic status.
() Larval antennae bases are not turned together, frons between them does not form a keel (see Index of characters [1.1.3]).
Plesiomorphies of Mayobaetis.
In mature larva ready to moult to subimago, buds of subimaginal gonostyli are folded under larval cuticle by the "Nigrobaetis-type": 2nd segment of gonostylus is directed posteriorly and curved by its convexity medially and by apex laterally [see Baetovectata (3)] (see Index of characters [2.3.9]).
Larval paracercus is developed.
Size. Fore wing length ? mm (see Tetramerotarsata).
Distribution. Neotropical Region.
Nominal species in Mayobaetis/g(1):
ellenae Mayo 1973 [Baetis] — typus nominis Mayobaetis --/
yala Nieto 2015 [Mayobaetis]
Baetovectata INCERTAE SEDIS
Turbanoculata INCERTAE SEDIS