Misc bfly questions

[gwang]

Hi everyone,
Any response to one or more of the following questions would be greatly
appreciated:

1.  When I am labelling a specimen that is ex ovum or ex larva, should I
put the date that the egg or larva was found, or the date that the adult
butterfly eclosed/died?

2.  Are Monarchs double brooded in Canada?  I've got about 5
caterpillars ready to pupate right now and there will be more than
enough time for the resulting adults to give rise to another generation
of Monarchs.

3.  When are black swallowtails generally on the wing in Canada;
specifically in Winnipeg?

Thanks in advance,
Xi Wang