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Scientific name
Platycheirus transfugus (Zetterstedt, 1838)
Group of organisms
Diptera: Syrphidae
Red List Category
Threatened with Extinction
Responsibility of Germany
High level of responsibility for fully isolated outpost populations
Current population status
extremely rare
Long-term population trend
unknown
Short-term population trend
constant
Special cases
Negative risk factor(s) is/are known
Risk factors
Fragmentation/isolation of remaining sub-populations
Previous Red List Category
Data Deficient
Change of category compared to previous Red List
The change of category is not assessable, for example because the previous Red List does not list the taxon or the taxon has not been assessed in the previous Red List.
Comment on responsibility
boreomontane Art mit dealpinen Reliktvorkommen auf der Schwäbischen Alb
Status
Indigenes or Archaeobiota
Source

Ssymank, A.; Doczkal, D.; Rennwald, K. & Dziock, F. (2011): Rote Liste und Gesamtartenliste der Schwebfliegen (Diptera: Syrphidae) Deutschlands. – In: Binot-Hafke, M.; Balzer, S.; Becker, N.; Gruttke, H.; Haupt, H.; Hofbauer, N.; Ludwig, G.; Matzke-Hajek, G. & Strauch, M. (Red.): Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands, Band 3: Wirbellose Tiere (Teil 1). – Münster (Landwirtschaftsverlag). – Naturschutz und Biologische Vielfalt 70 (3): 13-83.