Integripalpia

Randers Fjord

Figure 3.Oecetis angularis sp. n., male genitalia: A lateral B phallic apparatus, lateral C phallic apparatus, caudal D inferior appendage, caudal E inferior appendage, ventral.

Randers Fjord

Figures 33–34.Wings of Oecetis avara group species. 33 Oecetis angularis sp. n. 34 Oecetis houghtoni sp. n.: A forewing B hind wing.

Randers Fjord

Figures 46–45.Oecetis punctata and Oecetis avara group species – lateral habitus (male). 46 Oecetis punctata Navás 47 Oecetis angularis sp. n. 48 Oecetis tumida sp. n. 49 Oecetis patula sp. n. 50 Oecetis mexicana sp. n. 51 Oecetis campana sp. n. 52 Oecetis acciptrina sp. n. (female) 53 Oecetis maritza sp. n. 54 Oecetis agosta sp. n. 55 Oecetis protrusa sp. n. 56 Oecetis constricta sp. n. 57 Oecetis verrucula sp. n.

Hobro

Figure 24.Oecetis tumida sp. n., male genitalia: A lateral B phallic apparatus, lateral C phallic apparatus, caudal D phallic apparatus, ventral E inferior appendage, caudal F inferior appendage, ventral G egment IX and tergum X, dorsal.

Kærby Mølleå

Figure 4.Oecetis apache sp. n., male genitalia: A lateral B phallic apparatus, lateral C phallic apparatus, caudal D inferior appendage, caudal E inferior appendage, ventral.

Randers Fjord

Figures 35–45.Oecetis avara group species – lateral habitus (male). 35 Oecetis uncata sp. n. 36 Oecetis metlacensis Bueno-Soria 37 Oecetis apache sp. n. 38 Oecetis sordida sp. n. 39 Oecetis disjuncta (Banks) 40 Oecetis avara (Banks) – Florida 41 Oecetis avara (Banks) – Minnesota 42 Oecetis houghtoni sp. n. 43 Oecetis elata Denning & Sykora 44 Oecetis verrucula sp. n. 45 Oecetis species nr. houghtoni – Tennessee.

Randers Fjord

Figure 5.Oecetis avara (Banks), Holotype, male genitalia: A lateral B phallic apparatus, lateral C phallic apparatus, caudal D phallic apparatus, ventral E inferior appendage, caudal F inferior appendage, ventral G segment IX and tergum X, dorsal.

Randers Fjord

Figures 11–14.Variation in Minnesota specimens of Oecetis houghtoni sp. n., and Oecetis avara (Banks). 11–12 Oecetis houghtoni 13–14 Oecetis avara: a inferior appendage, lateral b phallobase, lateral c preanal appendage, dorsal d phallobase, caudal e phallobase, ventral f mesal process of tergum X, lateral.

Randers Fjord

Figures 35–45.Oecetis avara group species – lateral habitus (male). 35 Oecetis uncata sp. n. 36 Oecetis metlacensis Bueno-Soria 37 Oecetis apache sp. n. 38 Oecetis sordida sp. n. 39 Oecetis disjuncta (Banks) 40 Oecetis avara (Banks) – Florida 41 Oecetis avara (Banks) – Minnesota 42 Oecetis houghtoni sp. n. 43 Oecetis elata Denning & Sykora 44 Oecetis verrucula sp. n. 45 Oecetis species nr. houghtoni – Tennessee.

Randers

Figure 58.NJ phylogram of COI barcode sequences for Oecetis avara group species.

Randers

Figure 28.Oecetis avara group variant, nr. Oecetis houghtoni, Tennessee specimen: A lateral B phallic apparatus, lateral C phallic apparatus, caudal D phallic apparatus, ventral E inferior appendage, caudal F inferior appendage, ventral G segment IX and tergum X, dorsal.

Randers

Figures 29–32.Forms and species with reduced or absent forewing spotting from SW United States. 29 Oecetis variant from Graham Co., Arizona 30 Oecetis variant from Huachuca Mts., Arizona 31 Oecetis disjuncta (Banks), California 32 Oecetis apache sp. n., New Mexico: A lateral B phallic apparatus, lateral C phallic apparatus, caudal.