Re: [OM] IMG: Cicada Time

[Wayne Harridge]

> 
> Wiki says there are 220 species of cicada in Oz, most in the tropical
> north.

That many !

I checked the details on the 3 species noted there.  One is on
> a
> 7 year cycle.  The other two apparently appear annually although there
> is a comment for one of them that numbers vary dramatically from year
> to
> year.
> 

Yes, in our backyard the numbers fluctuate a lot from year to year, perhaps
we have a mixture of species on different cycles.

...Wayne



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