Dark Cahill
Stenonema femoratum (Say, 1823)
Status not recordedinsects
The dark cahill (Stenonema femoratum) is a species in the family Heptageniidae, order Ephemeroptera.
No freely licensed photo yet
Quick facts about the dark cahill
- Weight
- Not recorded
- Length
- Not recorded
- Lifespan
- Not recorded
- Main food
- Not recorded
- Habitat
- Not recorded
- Young per litter or clutch
- Not recorded
- Conservation status
- Not recorded
- Countries on record
- Not recorded
Where does the dark cahill live?
Not recorded
Is the dark cahill endangered?
No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.
How is the dark cahill classified?
- kingdomAnimalia
- phylumArthropoda
- classInsecta
- orderEphemeroptera
- familyHeptageniidae
- genusStenonema
- SpeciesStenonema femoratum (Say, 1823)
Synonyms Baetis femorata, Ecdyonurus femoratus, Ecdyonurus tripunctatus, Heptagenia femorata, Heptagenia tripunctata, Siphlurus femoratus, Stenonema birdi, Stenonema scitulum, Stenonema tripunctatum, Stenonema tripunctatum scitulum, Stenonema tripunctatum tripunctatum
Other names and names in other languages (1)
- Cream CahillEnglish
Relatives of the dark cahill
Other species in the same family Heptageniidae.
Yellow may dun
Heptagenia sulphurea
March brown mayfly
Rhithrogena germanica
Light Cahill
Stenacron interpunctatum
Quill Gordon
Epeorus pleuralis
Margined flat-headed mayfly
Heptagenia marginalis
Fresh flat-headed mayfly
Maccaffertium meririvulanum
CompareDark Cahill vs Yellow may dunDark Cahill vs March brown mayflyDark Cahill vs Light CahillDark Cahill vs Quill Gordon
Common questions
Answered only where our data holds the answer.
What kind of animal is the dark cahill?
The dark cahill (Stenonema femoratum) belongs to the family Heptageniidae in the order Ephemeroptera.
Sources and how to cite this page
Data as of 2026-11-14. How this page is put together.
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Tobias, J.A. et al. (2022) AVONET: morphological, ecological and geographical data for all birds. Ecology Letters 25: 581–597. https://doi.org/10.1111/ele.13898. Data: https://doi.org/10.6084/m9.figshare.16586228.v7 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - Environment Agency freshwater fish surveys (National Fish Populations Database) · OGL v3.0 · 2026-11-14
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Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1 - Global Biotic Interactions (GloBI): interpreted data products · CC0 1.0 · 0.11
Poelen, J.H., Simons, J.D. & Mungall, C.J. (2014) Global Biotic Interactions: an open infrastructure to share and analyze species-interaction datasets. Ecological Informatics 24: 148–159. https://doi.org/10.1016/j.ecoinf.2014.08.005. Data: https://doi.org/10.5281/zenodo.22691479, with each record's original reference. - Global Register of Introduced and Invasive Species (GRIIS) · CC BY 4.0 · 2026-11-13
Pagad, S., Genovesi, P., Carnevali, L., Schigel, D. & McGeoch, M.A. (2018) Introducing the Global Register of Introduced and Invasive Species. Scientific Data 5: 170202. https://doi.org/10.1038/sdata.2017.202. Country checklists published through GBIF by the IUCN SSC Invasive Species Specialist Group. - LepTraits 1.0: a globally comprehensive dataset of butterfly traits · CC0 1.0 · 1.0
Shirey, V., Larsen, E., Doherty, A. et al. (2022) LepTraits 1.0: a globally comprehensive dataset of butterfly traits. Scientific Data 9: 382. https://doi.org/10.1038/s41597-022-01473-5. Data: https://doi.org/10.6084/m9.figshare.19874602.v1 - Northwestern European arthropod life histories and ecological traits (raw datasets) · CC BY 4.0 · 2024-12-17
Logghe, G., Batsleer, F., Maes, D. et al. (2025) An in-depth dataset of northwestern European arthropod life histories and ecological traits. Biodiversity Data Journal 13: e146785. https://doi.org/10.3897/BDJ.13.e146785. Data: https://doi.org/10.5281/zenodo.13379714 - Palmer Archipelago penguin measurements (Palmer Station LTER) · CC0 1.0 · 0.1.0
Gorman, K.B., Williams, T.D. & Fraser, W.R. (2014) Ecological sexual dimorphism and environmental variability within a community of Antarctic penguins (genus Pygoscelis). PLoS ONE 9(3): e90081. https://doi.org/10.1371/journal.pone.0090081. Data: Palmer Station Antarctica LTER, via Horst, A.M., Hill, A.P. & Gorman, K.B. (2020) palmerpenguins. https://doi.org/10.5281/zenodo.3960218 - ReptTraits: a comprehensive dataset of ecological traits in reptiles · CC BY 4.0 · v1-2
Oskyrko, O., Mi, C., Meiri, S. et al. (2024) ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data 11: 243. https://doi.org/10.1038/s41597-024-03079-5. Data: https://doi.org/10.6084/m9.figshare.24572683.v4 - Sharkipedia: a curated open access database of shark and ray life history traits · CC BY 4.0 · 1.0-2022-06-17
Mull, C.G., Pacoureau, N., Pardo, S.A. et al. (2022) Sharkipedia: a curated open access database of shark and ray life history traits and abundance time-series. Scientific Data 9: 559. https://doi.org/10.1038/s41597-022-01655-1. Data: https://doi.org/10.5281/zenodo.6656525 - SquamBase 1.0 - a dataset of squamate species traits · CC0 1.0 · 1.0-dryad-v5
Meiri, S. (2024) SquamBase - a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography 33(4): e13812. https://doi.org/10.1111/geb.13812. Data: https://doi.org/10.5061/dryad.76hdr7t3b - TraitCH: a multi-taxa functional trait dataset for Switzerland and Europe · CC BY 4.0 · 2.0
Chauvier, Y., Adde, A., Bergamini, A. et al. (2025) TraitCH: a multi-taxa functional trait dataset for Switzerland and Europe. Zenodo. https://doi.org/10.5281/zenodo.15063844 - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
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Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Dark Cahill (Stenonema femoratum). Retrieved from https://creaturedata.com/animals/dark-cahill
“Dark Cahill (Stenonema femoratum).” CreatureData, 2026, https://creaturedata.com/animals/dark-cahill.
@misc{dark_cahill_2026,
title = {Dark Cahill (Stenonema femoratum)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/dark-cahill},
note = {Data as of 2026-11-14}
}