Epeorus vitreus

Webb, J. M. & Mccafferty, W. P., 2006, Contribution to the taxonomy of Eastern North American Epeorus Eaton (Ephemeroptera: Heptageniidae), Zootaxa 1128, pp. 57-64 : 62-63

publication ID

https://doi.org/ 10.5281/zenodo.171850

DOI

https://doi.org/10.5281/zenodo.6258129

persistent identifier

https://treatment.plazi.org/id/039CD513-FE0F-FFCD-7943-F938FAC5FBA6

treatment provided by

Plazi

scientific name

Epeorus vitreus
status

 

Key to known larvae of the eastern north American vitreus View in CoL species group

1. Lamellae of first pair of gills each with large anterior expansion, usually meeting or nearly meeting ventrally ( Fig. 11 View FIGURES 11 – 17. 11 ) [lamellae of gills 1 of E. namatus View in CoL only slightly

expanded anteriorly ( Fig. 12 View FIGURES 11 – 17. 11 )]; subdorsal setae on femora pectinate; maxillae with more than one seta at base of apical tooth complex ( Fig. 14 View FIGURES 11 – 17. 11 ); dorsal projection at apex of femora blunt; lamellae of gills 7 usually with longitudinal fold................................. ................................................................................................ E. pleuralis View in CoL species group ­ Lamellae of first pair of gills cordate, not expanded anteriorly ( Fig. 9 View FIGURES 1 – 10 ); subdorsal setae of femora simple; maxillae with single fimbriate seta at base of apical tooth complex; dorsal projection at apices of femora blunt or sharp; lamellae of gills 7 usually without longitudinal fold .................................................................... E. vitreus View in CoL species group, 2

2. Dorsal (outer) posterolateral projections of abdomen distinctly longer than ventral projections ( Fig. 13 View FIGURES 11 – 17. 11 ) .............................................................................................. E. vitreus View in CoL

­ Dorsal (outer) posterolateral projections of abdomen subequal to or only slightly longer than ventral posterolateral projections ( Fig. 8 View FIGURES 1 – 10 ) ................................................. 3

3. Abdominal terga each with small but distinct median protuberance on posterior margin, increasing in size posteriorly; head distinctly wider anteriorly ( Fig. 15 View FIGURES 11 – 17. 11 ) and nearly uniform brown; gills 7 with longitudinal fold .................................................. E. dispar View in CoL

­ Abdominal terga without posterior median protuberances or terga 2 or 3–7 each with small median protuberance, decreasing in size posteriorly; head subrectangular ( Fig. 1 View FIGURES 1 – 10 ), with four large pale markings; gills 7 without longitudinal fold ............................ 4

4. Dorsal projection at apex of hind femur sharply pointed ( Fig. 16 View FIGURES 11 – 17. 11 ); pronotum with small pair of tubercles ( Fig. 17 View FIGURES 11 – 17. 11 ); mature larvae>8.0 mm long ................ E. subpallidus View in CoL

­ Dorsal projection at apex of hind femur bluntly pointed ( Fig. 7 View FIGURES 1 – 10 ); pronotum without pair of small tubercles; mature larvae 6.0–8.0 mm long ............................. E. punctatus View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Ephemeroptera

Family

Heptageniidae

Genus

Epeorus

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