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| Platycheirus groenlandicus | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Syrphidae |
| Subfamily: | Syrphinae |
| Tribe: | Bacchini |
| Genus: | Platycheirus |
| Species: | P. groenlandicus |
| Binomial name | |
| Platycheirus groenlandicus (Curran, 1927) | |
| Synonyms | |
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Platycheirus groenlandicus the Arctic Sedgesitter is an uncommon species in the hoverfly family. Range: Subarctic (Alaska, Western USA (Rocky mountains) northern and western Canada, arctic and alpine Greenland, in mountains and in northern parts of Fennoscandia, northern Russia (Siberia) It's small black hoverfly with silver abdominal spots and basal tarsomeres of the front legs are yellow and strongly flattened. Groenlandicus is similar to Platycheirus flabella which has a narrower front basitarsus.
Description
Size
5.7–8.2 mm (0.22–0.32 in)
Head
The face is densely gray powdered, with a prominent shining black tubercle. It is strongly produced ventrally, and the anterior oral margin is extended forward almost to the level of the tubercle. The antenna is dark, with the arista distinctly thickened on the basal half.
Thorax
The thorax is black to bluish-black and is slightly and evenly gray powdered. The hair on the thorax is light and long on the scutellum.
Abdomen
The abdomen is matte black. On tergite 2, there are silver powdered spots located in the middle, which can be either completely round or have a rounded front edge with a straight back. Tergites 3 and 4 feature diamond-shaped silver powdered spots positioned just behind the front edge, occupying about one-third of the length of each tergite.
Legs
The front femora are dark with a yellow tip and have long brown hair on the back. The front tibiae are mostly yellow, slightly widening at the tip, and feature broad black areas in the middle on the back. The front tarsus has two light yellow basal segments (T1 and T2) that are broadly flattened. The first segment is more than twice as wide as the tip of the tibia and about twice as long as it is wide. The second segment is as wide as the tip of the first but only a quarter of its length. The middle segment (T3) is also yellow and slightly narrower than the second but remains flattened. The remaining segments of the front tarsi are normally shaped, brown-black, and the same length as the middle segment. The basal tarsus of the hind leg is swollen, almost twice as thick as the tibia.The mid tibia has a tuft of long wavy hairs on lower basal third.
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Legs
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Head
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Wing
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Bod
References
- "Arctic Sedgesitter (Platycheirus groenlandicus)". inaturalist.org. Retrieved 19 January 2025.
- Speight, M.C.D (2020). StN key for the identification of the genera of European Syrphidae (Diptera) 2020. Dublin: Syrph the Net Publications. p. 50.
- Skevington, Jeffrey H.; Locke, Michelle M.; Young, Andrew D.; Moran, Kevin; et al. (2019). Field Guide to the Flower Flies of Northeastern North America. Princeton Field Guides. Princeton University Press. ISBN 9780691189406.
- Speight, M.C.D (2011). Species accounts of European Syrphidae (Diptera), Glasgow2011 (PDF). Dublin: Syrph the Net publications.
- Nielsen, Tore (2017). "A revision of and key to the Holarctic and Oriental Platycheirus manicatus group species (Diptera, Syrphidae)". Norwegian Journal of Entomology. 64: 28–52.
- Young, Andrew D.; Marshall, Stephen A.; Skevington, Jeffrey H. (17 February 2016). "Revision of Platycheirus Lepeletier and Serville (Diptera: Syrphidae) in the Nearctic north of Mexico". Zootaxa. 4082 (1): 34. doi:10.11646/zootaxa.4082.1.1. ISSN 1175-5334. Retrieved 21 December 2024.
This article incorporates text from this source, which is available under the CC BY 3.0 license.
| Taxon identifiers | |
|---|---|
| Platycheirus groenlandicus |
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