CLADOENDESIS OF EPHEMEROPTERA
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CLADOENDESIS OF EPHEMEROPTERA |
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PAGE UNDER CONSTRUCTION
Ulmeritus/fg1
(Panephemeroptera
Euephemeroptera
Euplectoptera
Anteritorna
Bidentiseta
Furcatergaliae
Leptophlebia/fg1
Atalophleboadentata
Atalophlebopectinata
Atalophleboculata
Atalophlebomaxillata
Atalophlebolinguata
... Hagenulus/fg1
- Ulmeritus/g1)
Nomen hierarchicum:
Ulmeritus/fg1 [f:202;
g:1956]
(incl. Ulmeritoides)
In circumscription fits:
— gen. Ulmeritus Traver 1959: 4;
— Ulmeritus-Ulmeritoides group: Dominguez 1995a: 34.
References. Traver
1959: 
; – Dominguez 1991: * *;
– 1995a: * *.
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Autapomorphies of Ulmeritus/fg1. (?) Gonostylus with proximal (1st+2nd) segment slender, arched; its basal 1/6 portion is sharply broadened, with projected inner-apical angle. () Mouth apparatus ... Labrum ... Outer margin of mandible, beside long sparse setae (usual for ...), with a field of shorter dense setae in distal part. Labial palp with a row of thick setae from apex of 2nd segment to 3rd segment. () Each tergalius I–VII has both lamellae [see Leptophlebia/fg1 (10)] wide, oval, with numerous long slender marginal processes; trachea branches from base. Non-unique apomorphy (see Index of characters [1.3.23]). (?) Tergalii VII attached for from posterior margin of segment, nearer to middle or anterior margin Characters of Ulmeritus/fg1 of unclear phylogenetic status. ... Plesiomorphies of Ulmeritus/fg1. (P) All imaginal and subimaginal claws are ephemeropteroid. |
Size. Fore wing length 8–12 mm.
Distribution. South America.
| The taxon Ulmeritus/fg1 is divided into: |
1. Ulmeritus/fg2
2. Ulmeritoides
3. Diamantia
