I just did a quick search. Yes, there are periodic cicadas that generally all mature in the same year, and other types as well.
http://insects.ummz.lsa.umich.edu/fauna/michigan_cicadas/Periodical/Index.html

:-) So torturing your sister with bugs taught you something about them!

Mary (RI)

----- Original Message -----
From: Nail Family
To: letterbox-usa@yahoogroups.com
Sent: Monday, May 24, 2004 11:38 PM
Subject: [LbNA] OT but kind of related Re: Collecting Cicada Stamps


As a boy growing up in North Central Texas, I spent a lot of time
collecting cicadas. The bugs in our area were not the 17 year
variety as far as I know because they were out every year. There
were at least 3 different species that we were aware of and blue
eyed ones were indeed rare but still around occasionally.

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