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Are the Periodical Cicadas coming to your town?
The next periodical cicada emergence, Brood II, will happen in the this spring in Connecticut, Maryland, North Carolina, New Jersey, New York, Pennsylvania and Virginia -- in fact, it's already begun.
You might find a limited number of Brood VI straggers in GA, NC, and SC as well!
Are they coming to town?Read this first:
Figuring out if they're coming to your town:
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Consult the Brood Chart:The Brood Maps on the site are about 100 years old; go to Magicicada.org for updated maps.
Maps come from C.L. Marlatt’s The periodical cicada: an account of Cicada septendecim, its natural enemies and the means of preventing its injury… Note: Stragglers can emerge 1 or 4 years early or 1 or 4 years late. Don't be surprised if you see some periodical cicadas emerge earlier than planned this year. |
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Important: Magicicadas won't emerge everywhere in the states mentioned above. They might not exist in your town or neighborhood (particularly if trees were removed from your neighborhood). The key to seeing them, if they don't emerge in your neighborhood, is communication: networking with friends and family, checking the interactive maps on magicicada.org, checking sites like Twitter, Facebook and YouTube.
What should you look for before they emerge?
- Look out for cicada chimneys (follow the link for a photo) also known as turrets. These are structures cicadas build out of soil, positioned above the spot where they will emerge.
- Look for holes the diameter of an adult's finger near the root system of a tree. These are sure signs that cicadas will emerge in the area.
- You might discover some cicada nymphs (follow the link for a photo) while turning over stones or when performing landscaping chores. They are a golden-brown color, with black coloration in the area behind their heads.
What do they look like when they emerge:
Here is a great video of Magicicada nymphs once they have emerged from the ground:
Magicicada cicada nymph mania from Cicada Mania on Vimeo.

This is a nymph crawing up a tree.
Once cicadas nymphs have emerged from the ground, they will try to find a tree, and then begin the process of exiting their old nymph skins (ecdysis), expanding their wings, and changing to their adult coloring. If you have the time, a flash light and a camera you can record this amazing transformation.

This is a teneral (soft) adult, having shed its nymphal skin.
How to tell the difference between the 17 year species:
| Species: | M. septendecim | M. cassini | M. septendecula |
|---|---|---|---|
| Appearance of their abdomens: |
M. septendecim have broad orange stripes with more orange than black on their abdomens. See a photo. |
M. cassini have black abdomens with virtually no orange at all. See a photo. |
M. septendecula have stripes that feature as much black as orange. See a photo. |
| Other features: | M. septendecim also have an area of orange coloring between the eye and the wing:
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| Song: |
M. septendecim song (link goes to video) Sounds like "Pharaoh, Pharaoh!" |
M. cassini song (link goes to video) Note how it makes quick burst of sound, followed by some rapid clicks. |
M. septendecula song (link goes to video) Note the "tick, tick, tick, tick" steady rhythm of its call. |
| Similar 13-Year Species | Magicicada tredecim & Magicicada neotredecim. | Magicicada tredecassini | Magicicada tredecula |
Note: the 13 year species are almost identical to the 17 year species. For more information about the slight morphological and behavioral differences between the 17 year and 13 year Magicicada varieties, visit the Magicicada.org Species page.
Note: some folks call these cicadas "locusts", but they are not true locusts.
Why do Magicicadas wait 13 or 17 years and why do they emerge in such large numbers?
There are many theories why, but the primary reason could be that they're trying to avoid predators. Since they emerge only once every 13 or 17 years, no predator species can anticipate their emergence (except man), and emerging in large numbers ensures that at least some of them will survive to reproduce. See more about Cicadas and Prime Numbers. The long life-cycles could also help these cicadas avoid interbreeding with other Broods, as well as, avoid extinction from long stretches of fatally cold weather — more information about that can be found here.

