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789065.  Fri Feb 18, 2011 4:57 am Reply with quote

regarding the item in the second book of g i, what comes out of a cocoon; not butterflies. In fact some butterflies pupate in a fragile cocoon made of silk and particles of earth. examples would be the scotch argus (Erebia aethiops) and the small mountain ringlet (Erebia epiphron), both of which can be found in northern parts of britain.

832496.  Mon Jul 18, 2011 10:57 am Reply with quote

There are always exceptions to the rules. There is no taxonomical difference between moths and butterflies, they are of the same order (lepidoptera). There are, however, physical and behavioural differences. As you have pointed out, there are some butterflies which form cocoons just as the Grayling butterfly is unusual in the fact that it lands with its wings closed - another characteristic associated with moths.
As with many other subjects, there are rules but there are exceptions so, as a general rule, moths emerge from cocoons and butterflies from a chrysalis (but, if you prefer, just call them both pupae because that is correct in either case!)


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