Haplohyphes

CLADOENDESIS OF EPHEMEROPTERA
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Haplohyphes

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Furcatergaliae
Ephemerella/fg1 Pantricorythi Tricoryptera Leptohyphes/fg1 - Haplohyphes)

Nomen hierarchicum: Haplohyphes/g(1) [g:1966]

In circumscription fits:

— gen. Haplohyphes Allen 1966: 566

References. Allen 1966: ; – Dominguez 1984: ; – Molineri 1999a: ; – Wiersema & McCafferty 2000: ; – Molineri 2003b:

Autapomorphies of Haplohyphes.

(1) Larval mouthparts are modified, maxilla is filtering, widened apically, with long apical setae.

(2) Distal segment of gonostylus [initially single – see Ephemerella/fg1 (8)] is lost (non-unique apomorphy – see Index of characters [2.3.12]).

Plesiomorphies of Haplohyphes. Unlike Tricorythodes: Scuto-lateropostnotal muscle of metathorax is not so large, posterior scutal protuberances are not convergent posteriorly, lateropostnotum is not fused with epimeron (the same in Leptohyphes/fg2). Lateroparapsidal suture somewhat retains curvation initial for Ephemerella/fg1 [see Leptohyphes/fg1 (4)], merging with transverse interscutal suture laterad of medioparapsidal suture. Hind wings [of peculiar structure – see Leptohyphes/fg1 (2)] are present in both sexes; metathoracic wing muscles S.ESm and MTm are retained both in male and in female. 1^st tarsal segment is short and fused with tibia.

Unlike Leptohyphes/fg2: Tergalius II (gill operculum) has well-developed costal flap of ventral lobe [see Leptohyphes/fg1 (1)].

Size. Fore wing length 4–6.5 mm (see Tricoryptera).

Distribution. Neotropical Region.

Nominal species in Haplohyphes/g(1):

aquilonius Lugo-Ortiz & McCafferty 1995 [Haplohyphes] , /

baritu Domínguez 1984 [Haplohyphes]

dominguezi Molineri 1999 [Haplohyphes]

furtiva Domínguez 1984 [Haplohyphes] — syn.subj. baritu [Haplohyphes]

huallaga Allen 1966 [Haplohyphes] ,,

mithras Traver 1958 [Leptohyphes]

yanahuicsa Molineri 2003 [Haplohyphes]