[Syrphidae] need help with the conservation of hoverflies

muscapaul muscapaul at gmail.com
Fri Jun 18 09:25:51 BST 2010

Keeping specimens in a cyanide jar for too long results in yellow turning
into orange and red...


On 16 June 2010 16:02, Andrew Whittington <awhittington at btopenworld.com>wrote:

> while cyanide keeps yellows fresh (but few people use cyanide these days).
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