Brood III will next emerge in 2031.
This page was last updated in 2014.
Magicicada Brood III (3), the Iowan Brood, will emerge in Iowa, Illinois, and Missouri, in the spring of 2014.
Update for 6/18: It has been great to see so many people are enjoying the emergence. I bolded the names of the counties below, where people have reported emergences in the comments.
Update for 5/31: Cicadas have been reported in Dallas, Union, and Warren counties in Iowa, and Mercer County in Missouri.
Update for 5/30: Greg Holmes reported on the Entomological-Cicadidae Yahoo Group that Donald Lewis, entomologist at Iowa State University, has a report of periodical cicadas from north of Burlington, IA. With air temperatures in the mid 80s for the next 6 days, the soil should be warm enough to coax more cicadas from the ground. Rain may slow the emergence, though.
Some Brood III facts:
- Brood III Magicicadas have a 17-year life cycle.
- The last time Brood III emerged was 1997.
- All three 17-year species will emerge: M. septendecim, M. cassini, and M. septendecula.
Looking a the Cicada Central Magicicada Database:
- Iowa will likely experience Brood III in Appanoose, Boone, Decatur, Des Moines, Hamilton, Henry, Lee, Louisa, Lucas, Mahaska, Van Buren, Washington counties.
- There are literature records (typically older, and not substantiated by recent evidence) that the cicadas will also emerge in the counties: Adair, Adams, Audubon, Cass, Cedar, Davis, Greene, Guthrie, Iowa, Jasper, Jefferson, Johnson, Keokuk, Madison, Marion, Marshall, Monroe, Muscatine, Polk, Poweshiek, Ringgold, Story, Taylor, Union, Wapello, Warren, Wayne and Webster.
- Plus reports from Clarke, Dallas County!
- Missouri literature records: Adair, Harrison, Harrison, Henry, Johnson, Lewis, Macon, Marion, Platte, Putnam,Vernon
- Illinois: Adams, Brown, Cass, Fulton, Hancock, Henderson, Knox, McDonough, Peoria, Pike, Schuyler, Warren, and maybe (literature records) Champaign, Greene, and Mason.
I am excited about the 17 and 13 year cicada emergences expected in 2014.
Here is what we can look forward to:
I’m looking forward to taking some vacation time and tracking cicadas. Brood XXII is a good excuse to visit New Orleans (even if it isn’t on the cicada map).
Fun fact: Brood III and XXII won’t emerge in the same year again until the year 2235.
If you have 18 minutes to spare, watch the video version of this article.
Or save 18 minutes and just read it:
These are the 17 most interesting 17-year cicada facts (in my humble opinion). All these facts apply to 13-year cicadas as well. And always report periodical cicada sightings to Magicicada.org so cicada researchers can track them.
- Names: People call these cicadas “locusts” but they are not true locusts — real locusts look like grasshoppers. The phrase “17 year cicada” indicates that they arrive every 17 years. The name “periodical cicadas” indicates that they arrive periodically and not each and every year. The scientific name for the Genus of these cicadas is Magicicada, and there are 3 types of 17 year Magicicadas: Magicicada septendecim, Magicicada cassini and Magicicada septendecula. This is a true locust:
- There are 13-year cicadas too: there are 13 year cicadas too! There are four species of 13-year cicadas: Magicicada tredecim, Magicicada neotredecim, Magicicada tredecassini, and Magicicada tredecula. Broods XIX, XXII and XXIII feature these cicadas.
Here’s a video that will help you identify the various species.
- Eye Color: Most 17 Year Cicadas have red eyes, but they can also have white, gray, blue , yellow , or multi-colored eyes
- Fungus: The Massospora fungus infects Magicicadas, filling their abdomens and destroying their ability to reproduce. Often, their entire abdomen will fall off. The cicadas actually spread the fungus throughout their local colony via mating — the Massospora fungus is a cicada STD!
attack land on you if you’re using a power tool or lawn mower. Cicadas think the sounds made by power tools and lawn maintenance equipment are made by cicadas. They get confused and will land on the people using the equipment! Pro-tip: cut your lawn in the early morning or near dusk when the cicadas are less active.
- Cicadas have five eyes: Cicadas have two, obvious, large, compound eyes, and three ocelli. Ocelli are three jewel-like eyes situated between the two main, compound eyes of a cicada. We believe ocelli are used to detect light and darkness. Ocelli means little eyes in Latin.
- People eat them: People eat them. You can barbecue it, boil it, broil it, bake it, saute it. There, uh, cicada kabobs, cicada creole, cicada gumbo, panfried, deep fried, stir fried. There’s pineapple cicada, lemon cicada, coconut cicada, pepper cicada, cicada soup, cicada stew, cicada salad, cicada and potatoes, cicada burger, cicada sandwich… that’s, that’s about it.
- Animals eat them: all wild animals and domestic pets will eat them. Dogs will gorge themselves until they choke. Squirrels will eat them like corn on the cob. Wild turkeys will grow fat and juicy on the cicada feast. Fish go crazy for them too — you can use them as bait, or use lures that mimic them.
- Cicadas “eat” tree fluids: Cicadas don’t eat solid foods — instead they use their slender, straw-like mouth parts to drink tree fluids.
- Cicadas pee: Yes cicadas pee, so wear a hat when walking under trees if that sort of thing bothers you. Cicadas drink tree fluids and then expel the excess fluid they do now need. People call it “honeydew” or “cicada rain”.
- That cicada sound: Only male cicadas make the sound they’re famous for. Males have organs on their abdomen called tymbals. Muscles pop the tymbals in and out, which creates the sound we hear. Males make different calls for different reasons, and each species has a unique sound. Females can make sound too — they flick their wings to respond to males. Read this article for more information.
- There are billions of them: there are literally billions of 17 year cicadas. Why? One theory suggests that a large number of cicadas overwhelms predators, so predators are never able to eat them all and cicadas, and many always survive to mate. This is a survival strategy called “predator satiation”.
- They damage wimpy trees: the biggest concern about 17-year cicadas is their potential to damage young trees. The truth is they will damage limbs on the wimpiest of trees, so if you have weak, pathetic, wimpy ornamental trees in your yard you should consider placing netting around the trees if the cicadas visit your yard. Also, you can try hosing them off with water, placing insect barrier tape around the trunk of the trees, or picking them off like grapes! Or, plant strong, beefy American trees — that’s what I would do. Cicadas actually benefit the health of trees by aerating the soil around the roots and trimming the weak or damaged limbs.
- Stragglers: Periodical cicadas that emerge in years before they are supposed to emerge are called stragglers.
- 17 and 13 are prime numbers. Scientist speculate that one reason why these cicadas emerge in 17 or 13 year cycles is because those are prime numbers. The fact that 13 & 17 are relatively large* prime numbers makes it difficult for predators to synchronize with them. (*Relative to the average lifespan of an animal.) Annual cicadas (cicadas that arrive every year) often have wasps specialized to prey on them; periodical cicadas have no such wasp because no wasp could evolve to synch with it.
- They use their color to warm up: Cicadas need to be warm to sing and fly around, but they’re cold-blooded. Their dark skin absorbs the heat of the sun, which helps to warm them up.
- 17 year and 13 year broods co-emerge every 221 years. Cicada Broods usually don’t overlap geographically, and it is very rare when they emerge in the same year. The next time Brood II (the brood emerging in 2013) will co-emerge with another brood will be in 2115 when it co-emerges with Brood XIX. You might need a time machine to see that happen.
Bonus: More information on the morphology of 17 and 13 year cicadas, so you can tell the difference…
What is the taxonomy of the Magicicada genus?
Kingdom: Animalia (animals)
Phylum: Arthropoda (arthropods)
Subphylum: Hexapoda (hexapods)
Class: Insecta (insects)
Subclass: Pterygota (winged insects)
Infraclass: Neoptera (wing-folding insects)
Order: Hemiptera Linnaeus, 1758 (true bugs)
Suborder: Auchenorrhyncha (hoppers)
Family: Cicadidae Latreille, 1802 (cicadas)
Subfamily: Cicadettinae Buckton, 1889
Tribe: Taphurini Distant, 1905
Subtribe: Tryellina Moulds, 2005
Genus: Magicicada Davis, 1925
Here’s the old maps (from C.L. Marlatt’s The Periodical Cicada from 1907) for Brood III or Brood XIX. Brood III is a 17-year Magicicada due to emerge in 2014, and Brood XIX is a 13-year Magicicada due to emerge in 2011. It looks like stragglers (periodical cicadas emerging years in advance of when they’re supposed to emerge) in Iowa would be Brood III, and those emerging in Missouri are probably Brood XIX, and possibly Brood III in the north of Missouri. If you find some, take photos, video of their song, etc.
Over the past 100+ years, these maps have been updated, and you can find the updated maps on sites like magicicada.org or Cicada Central.
Gene Kritsky wrote us to let us know that Brood III periodical cicadas are emerging in Iowa and Missouri.
I wanted to let you know that I have received emails with reports of
emerging periodical cicadas in Iowa and northern Missouri in Brood III
territory. These cicadas would be emerging four years early similar to
the early emergences observed in 2000, 2003, 2004, and 2009.
It’s been an interesting year so far, with Brood III stragglers emerging 4 years early, Brood XIV emerging 2 years late, and Brood XIX emerging 1 year early.
Check our Brood Chart to see where the next batch of periodical cicadas might emerge.
Check Magicicada.org for maps.