Cicada Mania

Dedicated to cicadas, the most amazing insects in the world.

February 1, 2024

New Brood XIX and XIII Cicada Book by Dr. Gene Kritsky

Filed under: Brood XIII | Brood XIX | Magicicada | Periodical — Dan @ 8:14 am

Cicada researcher and communicator Dr. Gene Kritsky has a new book about Brood XIX and XIII which are both emerging in spring of 2024: A Tale of Two Broods: The 2024 Emergence of Periodical Cicada Broods XIII and XIX. It is available in paperback and Kindle formats.

A Tale of Two Broods: The 2024 Emergence of Periodical Cicada Broods XIII and XIX

Other posts about Dr. Gene Kritsky on this site:

  1. An Interview with Gene Kritsky
  2. Gene Kritsky’s new cicada site and Brood XIV news
  3. Periodical Cicadas: The Brood X Edition by Gene Kritsky
  4. Gene’s App: Cicada Safari app for tracking Magicicada periodical cicadas

October 27, 2023

2024 Cicada Forecast

Filed under: Brood XIII | Brood XIX | Cicada Mania — Dan @ 9:17 pm

Updated on 2/10/2024.

Periodical Cicadas of North America:

2024 19x13

2024 is the big year in the U.S.A. Two Magicicada Broods, Brood XIII (Thirteen) and Brood XIX (Nineteen, aka the Great Southern Brood) will emerge in the United States.

Get ready for a zillion of these (if you’re in the right location):
Brood X header

about Brood XIX:

Brood XIX has a 13-year cycle, features four species, and is found in:

Alabama, north-west half of Arkansas, north-west Georgia, southeast Iowa, southern Illinois, south-west Indiana, western Kentucky, northern Louisiana, Maryland in St. Mary’s County, Missouri, Mississippi, central North Carolina, eastern Oklahoma, western South Carolina, Tennessee, eastern Virginia.

Big cities in range of Brood XIX include Nashville (TN), Charlotte (NC) and St. Louis (MO), keeping in mind that they prefer the suburbs.

Read lots more about Brood XIX.

about Brood XIII:

Brood XIII has a 17-year cycle, features three species, and is found in:

Eastern Iowa, northern Illinois, Indiana, near Lake Michigan, and southern Wisconsin. Though likely extinct, the brood once appeared in Michigan along the border with Indiana.

The largest city in Brood XIII is Chicago, Illinois, and the Lake County Forest Preserve in the suburbs of Chicago is a good place to visit for tourists. The Michigan part of the brood is likely extinct, so do not look there if you are a tourist.

Read lots more about Brood XIII.

Will the broods overlap?

Both Brood XIX and XIII exist in Macon, Sangamon, Livingston and Logan counties in Illinois. The easily accessible place they come closest to overlapping is Springfield, Illinois, which is in Sangamon County. Compare these Brood XIII map and Brood XIX.

People wonder what would happen if members of the broods mate. Their offspring would likely live and adopt either a 13 or 17 year life cycle.

Resources to get you through 2024

  1. A Tale of Two Broods: The 2024 Emergence of Periodical Cicada Broods XIII and XIX book by Dr. Gene Kritsky.
  2. The Cicada Safari app for iOS and Android to find and report cicadas.
  3. The University of Connecticut Periodical Cicadas website.

Stragglers from other broods:

Magicicada stragglers from other broods will emerge in small numbers.

Annually emerging cicada species of North America:

In the United States, annual cicada emergences will happen like they did in 2023, with few surprises. Cicadas in southern locations will emerge first, with Quesada gigas emerging early on. Look at the chart on the cicada sounds page for a calendar of annual cicada emergences.

The cicadas that have a camouflage appearance are Neotibicen, like Neotibicen linnei aka Linne’s Cicada, or Megatibicen, Megatibicen resh aka Resh Cicada, and they are annual cicadas.

July 23 (small) 3
A Neotibicen tibicen, perhaps the most common annual cicada in North America.

Proto-periodical cicadas of North America (the fly fisher’s friend):

Emergences of proto-periodical cicadas depend on multiple factors including the species, crowding, location, and cumulative rainfall, making it hard to predict when they will emerge. We can’t say exactly when they’ll emerge in your location. Platypedia species, in particular, represent a “boon” to fly fishers, as they send fish into a feeding frenzy. The best bet for Platypedia cicadas is to tune into iNaturalist from April to June.

A Platypedia cicada, photo by CGWiber.

International species — World Wide Cicadas

A variety of cicadas

Generally speaking, cicadas in the Northern hemisphere emerge somewhere between March and September, and in the Southern hemisphere, somewhere between September and March. In places closer to the equator, like Ecuador, you can have cicadas for almost the entire year. You can use sites like iNaturalist and Cicada Mania to do research. iNaturalist compiles cicada identifications, including photos, sounds and geographic data. Cicada Mania contains basic facts and historical and cultural knowledge.

There are periodical species of cicadas in Fiji and India, but none are emerging in 2024.

iNaturalist by continent

on Cicada Mania by continent

You can also explore specific countries like…

iNaturalist by country:

on Cicada Mania by country:

More to come. Here is the 2023 Forecast.

October 3, 2023

Fall Magicicada cassini straggler found in Park Ridge, IL

Filed under: Brood XIII | Magicicada | Periodical Stragglers — Tags: — Dan @ 10:22 am

Mary Rotter Fullerton found, or rather heard and recorded, a Brood XIII Magicicada cassini straggler on October 2nd, 2023, in Park Ridge, Illinois! This cicada emerged 7 months early!

Listen to the edited file (volume increased, background noise removed):

There are squirrel sounds in the mix as well.

Mary says:

Very cool, I have never heard one in fall. It was in a 50-year old maple tree that hosted many stragglers (early Brood XIII?) this past spring of 2023. Park Ridge, IL.

Mary Rotter Fullerton

David Marshall of confirmed that this is indeed a Magicicada cassini.

David says:

Yes to me that’s unquestionably a set of cassini calls. There are some literature records of autumn Magicicada, sometimes with speculation that it’s related to sudden late-season warmups.

It looks like there’s been quite a few fall stragglers, according to the Magicicada Straggler project on iNaturalist.

May 27, 2023

2023 Magicicada straggler update

Filed under: Brood X | Brood XIII | Brood XIV | Brood XIX | Magicicada | Periodical — Dan @ 6:49 am

Updated for June 7th!

Here’s a map of 2023 Magicicada straggler sightings from 2023 Magicicada stragglers iNaturalist project and the Cicada Safari app. Dr. Gene Kritsky compiled the map.

Kritsky map June 7

It looks like there are plenty of stragglers from these broods:

Learn about Magicicada stragglers.

April 13, 2023

Brood XIII and Brood XIX Magicicada will both emerge in 2024

Filed under: Brood XIII | Brood XIX | Periodical — Dan @ 9:42 am

News! A Brood XIX straggler has emerged in Georgia! More stragglers have been sighted in Hartselle AL, Pittsboro, NC, Chattanooga, TN, Asheboro, NC, and Chapel Hill, NC.

2024 will be a “magical” year for cicada fans because the periodical cicada broods XIII and XIX will emerge in 2024. These broods co-emerge every 221 years (13 X 17). The last time they co-emerged was in 1803, the same year as the Louisiana Purchase (the same year the U.S. got Brood XIX states Louisiana, Arkansas, Iowa, Kansas, Missouri, and Oklahoma). Coincidence? Perhaps.

Thomas Jefferson thinking of the cicadas he just bought.

Brood XIII (13) has a 17-year lifecycle and is found in the states of IA, IL, IN, MI, and WI. This brood features the species Magicicada septendecim, Magicicada cassini, and Magicicada septendecula.

People (cicada tourists) have begun to ask “Where is the best place to see Brood XIII in 2024?”. I can recommend the Ryerson Conservation Area in Deerfield, IL. See photos and videos from my trip there in 2007. Illinois has both Brood XIII and Brood XIX, and all 7 Magicicada species. So you could spend a week in southern Illinois for Brood XIX and then travel north to Deerfield for Brood XIII.

Brood XIX (19) has a 13-year lifecycle and is found in the states of AL, AR, GA, IA, IL, IN, KS, KY, LA, MD, MO, MS, NC, OK, SC, TN, and VA. This brood is also known as the Great Southern Brood and features the species Magicicada tredecim, Magicicada neotredecim, Magicicada tredecassini, and Magicicada tredecula.

Do these broods overlap? If they do, it’s in the Springfield, Illinois area. Springfield is a good place for your cicada sightseeing “basecamp”. Take a look at these maps on the UCONN Cicadas website: Brood XIX and Brood XIII.

Your next chance to see and hear two broods co-emerge will be in 2037 when Brood XIX and Brood IX (9) emerge.

April 18, 2021

Periodical cicada nymphs emerging at night

Filed under: Brood XIII | Magicicada | Molting | Nymphs | Periodical — Tags: — Dan @ 5:29 am

One of the most fun periodical cicada experiences is watching thousands of nymphs emerge from the ground at night, crawl to the nearest vertical surface (hopefully a tree) and begin to molt.

This is a video by Roy Troutman from 2007 of the Brood XIII emergence, specifically in Ryerson Woods in Illinois:

Observing magicicada emergence at Ryerson Woods from Roy Troutman on Vimeo.

Here’s a time-lapse video, also by Roy, of a cicada nymph molting:

Magicicada nymph molting from Roy Troutman on Vimeo.

July 12, 2020

Chicago Area Periodical Cicada Emergences in 2020

Filed under: Accelerations | Brood XIII | Magicicada | Periodical Stragglers | United States — Dan @ 10:04 am

Many periodical cicadas emerged four years early in the Chicago area in 2020. These cicadas belong to the Brood XIII (13) which is set to emerge in 2024, and last emerged in 2007. Periodical cicadas often emerge in years proceeding or following the year their brood is expected to emerge. This phenomenon is called straggling. Most of the time these “stragglers” emerge in small numbers and are quickly eaten by predators, and do not go on to sing, chorus (synchronized singing for the purpose of attracting females), mate, and lay eggs. Sometimes they emerge in numbers large enough to survive, chorus, and reproduce — this seems to have happened in the Chicago area in 2020. It is thought this is how new broods formed over the millennia — cicadas emerge 4 or 1 year early in significant numbers and form a new brood. When enough stragglers emerge to successfully reproduce it is called an acceleration.

So, is a new brood forming around Chicago? Is this due to climate change or localized “heat islands”? Will the progeny of these stragglers emerge in 13, 17 or 21 years? Lots of questions — but we’ll need to wait quite some time to answer them.

There is a precedence for Brood XIII cicadas straggling in the Chicago area:

In 1969 massive numbers of periodical cicadas emerged in the Chicago suburbs 1 (Williams, K.S. & Simon, C. 1995).

In 1986, another 4-year acceleration was observed in the Chicago area by Monte Lloyd 1.

In 2003, many people left observations on our forums. Observations were made in Glenview, Flossmoor, Riverside, Downers Grove, Homewood, Westmont, Oak Park, and Hinsdale. Here are some examples:

Magicicada emerging this evening

Date: Wednesday, Jun/4/2003

As I went for a walk this evening I noticed quite a few periodic cicadas emerging in the grass, crawling on the sidewalks and on the trunks of trees. This is not our year for the 17-year brood. We should not have them until 2007. Has anyone else in the Chicago area seen these cicadas? — Sue, Flossmoor, IL

Cicada singing

Date: Monday, Jun/9/2003

I heard the cicadas singing for the first time this morning after my walk. Now that I have my doors open I can hear them on and off. — Sue, Flossmoor, IL

In 2020 many people left comments on the Brood XIII page, emailed us (thanks Neil) and left sightings via the Cicada Safari app.

1Williams, K.S. & Simon, C. 1995. The Ecology, Behavior, and Evolution of Periodical Cicadas. Annual Review of Entomology. Vol. 40:269-295 (

April 18, 2020

Brood XIII (13) will emerge in 2024 in Illinois, Iowa, Wisconsin and Indiana

Filed under: Brood XIII | Magicicada | Periodical — Dan @ 1:02 am

Periodical cicada Brood XIII (13) will emerge in the spring of 2024 in Iowa, Wisconsin, Illinois, Indiana, and possibly Michigan. The last time this brood emerged was in 2007.

Special note: Brood XIX (19) will also emerge in 2024. While the two broods do not overlap, they come closest in the Springfield, Illinois area.

What, when, where, and why:


Millions of these:
Adult, Nymph, Molting Cicada

Videos from 2009:

When: Typically beginning in mid-May and ending in late June. These cicadas will begin to emerge approximately when the soil 8 inches beneath the ground reaches 64 degrees Fahrenheit. A nice, warm rain will often trigger an emergence.

Other tips: these cicadas will emerge after the trees have grown leaves, and, by my own observation, around the same time Iris flowers bloom.


Cicadas @ UCONN (formerly has the most up-to-date maps.

  • Illinois places: Belvidere, Brookfield, Channahon, Chicago, Des Plaines River Trail, Downers Grove, Egermann Woods County Forest Preserve, Elmhurst, Flossmoor, Geneva, Glen Ellyn, Highland Park, Hinsdale, Homewood, La Grange, Lagrange Woods, Lake Forest, Lansing, Lincolnshire, Lisle, Lombard, MacArthur Woods Forest Preserve, Marseilles, McHenry, McKinley Woods, Morton Arboretum, Naperville, Northbrook, Ogden, Ottawa, Palos Heights, River Forest, River Grove, Romeoville, Ryerson Woods, Schiller Park, Thornton, Vernon Hills, Villa Park, Weaton, Western Springs, Westmont, Wonder Lake, and more.
  • Illinois counties: Bureau, Carroll, Cass, Cook, DuPage, Fulton, Grundy, Henderson, Henry, Jo Daviess, Kankakee, Lake, LaSalle, Livingston, Logan, Marshall, Mason, McHenry, McLean, Menard, Peoria, Putnam, Sangamon, Stark, Tazewell, Whiteside, Will, Winnebago, Woodford.
  • Iowa places: Atalissa, Solon, and more.
  • Iowa counties: Benton, Black Hawk, Bremer, Cedar, Dubuque, Henry, Iowa, Johnson, Jones, Linn, Louisa, Muscatine, Scott, Tama.
  • Wisconsin locations: Aurora University, Big Foot Beach State Park, Lake Geneva, Moraine Nature Preserve, and more.
  • Wisconsin counties: Crawford, Grant, Green. Rock, Walworth.
  • Indiana locations: Crown Point, Portage, Purdue-North Central, Valparaiso, and more.
  • Indiana counties: LaPorte, Porter, Lake.
  • Michigan: According to Cicadas @ UCONN (formerly, Magicicada have been found along the border of Michigan and Indiana.

More Location Tips:

Local Events

Lake County Forest Preserve in Illinois: 1) A cicada exhibit opening at the Dunn Museum in Libertyville, IL on April 27th. 2) Cicadas of Lake County on 5/2. 3) Celebrating Cicadas on 5/16. 4) On Sunday, June 9th, they plan to hold CicadaFest at Ryerson Woods. Insects, and of course, cicadas will be featured.

Why: Why do they stay underground for 17-years? The prevailing research suggests they have evolved a long lifecycle allowing them to avoid predators that would sync up with their lifecycle & emergence. Why are there so many?! Research suggests that their huge numbers allow them to overwhelm predators, so enough of them will live on to breed and perpetuate the brood.

More facts and fun:

1907 Map from Marlatt, C.L.. 1907. The periodical cicada. Washington, D.C.: U.S. Dept. of Agriculture, Bureau of Entomology.

See a modern map, or the Live Map from the Cicada Safari app.
Marlatt 1907 13 Brood XIII

What was the emergence in 2007 like?

March 24, 2020

Cicada Carousel Ride at the Brookfield Zoo

Filed under: Brood XIII | Pop Culture — Dan @ 6:04 pm

Cicada Carousel Ride at the Brookfield Zoo, in Brookfield, Illinois. 2007 in celebration of Brood XIII.

Cicada Carousel Ride at the Brookfield Zoo

Cicada Carousel Ride at the Brookfield Zoo

March 22, 2020

Lake County Forest Preserves Cicada Mania! Festival, part 4

Filed under: Brood XIII | Magicicada | Periodical — Tags: , — Dan @ 5:19 pm

Here are some photos from the Cicada Mania! Festival at the Lake County Forest Preserves at Ryerson Woods back in 2008 for the Brood XIII Magicicada emergence.

Skip to Part 1, Part 2, or Part 3.

Magicicada cicadas. Most, if now all are Magicicada septendecim:

Cicada on a leg. Lake County Forest Preserve outside of Chicago. Brood XIII. 2007.

Cicada on a hand. Lake County Forest Preserve outside of Chicago. Brood XIII. 2007.

Many Magicicada. Lake County Forest Preserve outside of Chicago. Brood XIII. 2007.

Many Magicicada. Lake County Forest Preserve outside of Chicago. Brood XIII. 2007.

Magicicada septendecim.

Updating Magicicada back at my hotel room (giant Alien Ware laptop):

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