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Scientific name
Criorhina pachymera Egger, 1858
Group of organisms
Diptera: Syrphidae
Red List Category
Critically endangered
Responsibility of Germany
High level of responsibility
Current population status
very rare
Long-term population trend
strong decline
Short-term population trend
decrease of unknown extent
Special cases
Negative risk factor(s) is/are known
Risk factors
Increasing indirect impacts, e. g. deterioration of habitat quality
Previous Red List Category
Endangered
Change of category compared to previous Red List
Current downgrading of Red List Category
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.