Bemerkenswerte Schwebfliegenbeobachtungen (Diptera: Syrphidae) aus Niedersachsen 4 [Remarkable records of hoverflies (Diptera: Syrphidae) from Lower Saxony (Germany) 4]

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith