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May 27, 2020

Where will 17 & 13 Year Periodical Cicada Broods emerge next (2025)?

Skip to a section: Broods | Your Town | Pre Emergence Signs | Compare Magicicada Species.

17 & 13 Year Periodical Cicadas

A Magicicada Chorus. Recorded in New Jersey, Brood X (2004) by Dan Mozgai:

What happened in 2024:

As you have heard, Brood XIII (17-year) and Brood XIX (13-year) emerged in 2024. The last time these broods co-emerged was 1803. As expected, the broods did not overlap (never did, never will). Gene Kritsky released a new book. See what people found iNaturalist: Flagging (Brown Leaves), Brood XIX, Brood XIII, Massospora, and Blue and White eyes. Buy a shirt.

Early emerging “stragglers” have also emerged from Brood XIV (1 year early) and XXIII (4 years early).

What will happen in 2025:

The Forecast for 2025 is Brood XIV will emerge in Georgia, Indiana, Kentucky, Massachusetts, Maryland, North Carolina, New Jersey, New York, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia.

We will also get some stragglers from Brood I in Tennessee, Virginia, and West Virginia.

Magicicada Brood Chart

The Brood Chart features the names of the broods (Roman numerals), their life cycle length when they will emerge next, which states they’ll emerge in, links to Maps, the species that will emerge, and other information. Click the maps for larger, detailed maps.

Brood 17 or 13 Year Stragglers Probable States & Species
I (1) 17 1961, 1978, 1995, 2012, 2029 2025 (-4), 2028 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: TN, VA, WV
II (2) 17 1962, 1979, 1996, 2013, 2030 2026 (-4), 2029 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: CT, GA, MD, NC, NJ, NY, OK, PA, VA
III (3) 17 1963, 1980, 1997, 2014, 2031 2027 (-4), 2030 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: IA, IL, MO
IV (4) 17 1964, 1981, 1998, 2015, 2032 2028 (-4), 2031 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: IA, KS, MO, NE, OK, TX
V (5) 17 1965, 1982, 1999, 2016, 2033 2029 (-4), 2032 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: LI NY, MD, OH, PA, VA, WV
VI (6) 17 1966, 1983, 2000, 2017, 2034 2030 (-4), 2933 (-1) Species: M. septendecim, M. septendecula.
States: GA, NC, SC, WI, OH
VII (7) 17 1967, 1984, 2001, 2018, 2035 2031 (-4), 2034 (-1) Species: M. septendecim.
States: NY
VIII (8) 17 1968, 1985, 2002, 2019, 2036 2032 (-4), 2035 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: OH, PA, WV and OK
IX (9) 17 1969, 1986, 2003, 2020, 2037 2033 (-4), 2036 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: NC, VA, WV
X (10) 17 1970, 1987, 2004, 2021, 2038 2034 (-4), 2037 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: DE, GA, IL, IN, KY, MD, MI, NC, NJ, NY, OH, PA, TN, VA, WV, Washington
XIII (13) 17 1956, 1973, 1990, 2007, 2024, 2041 2025 (+1) Species: M. septendecim, M. cassini, M. septendecula.
States: IA, IL, IN, MI, WI
XIV (14) 17 1957, 1974, 1991, 2008, 2025, 2042 2024 (-1) Species: M. septendecim, M. cassini, M. septendecula.
States: GA, IN, KY, MA, MD, NC, NJ, NY, OH, PA, TN, VA, WV
XIX (19) 13 1972, 1985, 1998, 2011, 2024, 2037 2025 (+1), 2028 (+4) Species: M. tredecim, M. neotredecim, M. tredecassini, M. tredecula.
States: AL, AR, GA, IA, IL, IN, KY, LA, MD, MO, MS, NC, OK, SC, TN, VA
Brood XIX mini map
XXII (22) 13 1975, 1988, 2001, 2014, 2027, 2040 2026 (-1), 2032 (+4) Species: M. tredecim, M. tredecassini, M. tredecula.
States: KY, LA, MS, OH
XXIII (23) 13 1976, 1989, 2002, 2015, 2028, 2041 2024(-4), 2027 (-1) Species: M. tredecim, M. neotredecim, M. tredecassini, M. tredecula.
States: AR, IL, IN, KY, LA, MO, MS, TN

When will they emerge?

Generally speaking, these cicadas will begin to emerge when the soil 8″ beneath the ground reaches 64 degrees Fahrenheit (Heath, 1968). A nice, warm rain will often trigger an emergence. They typically emerge in May but have been known to emerge in late April or early June. It all depends on the weather.

What should you look for before they emerge?

Chimneys / Turrets

Look for cicada chimneys a.k.a. turrets. These are structures cicadas build out of the soil, positioned above the hole where they will emerge.



Look for holes in 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.


Cicadas Under Stones & Slates

You might discover some cicada nymphs while turning over stones or when performing landscaping chores.

Cicada tunneling under slate

What do they look like when they emerge:

Here is a great video of Magicicada nymphs once they have emerged from the ground:


This is a recently emerged nymph crawling up a tree. Note that its eyes are red.


Once cicadas nymphs have emerged from the ground, they will try to find a tree (or similar vertical surface), and then begin the process of shedding their old nymph skins (ecdysis), expanding their wings, and changing to their adult coloring. Watch this amazing transformation.


How to tell the difference between the seven Magicicada species:

Left to right: Magicicada cassini, Magicicada septendecula, Magicicada septendecim:

Left to right: Magicicada cassini, Magicicada septendecula, Magicicada septendecim:

The first way is based on the Brood. Take a look at the Brood chart above, and see which species appear with the Brood.

There are 3 basic types of Magicicada: “‘Decims”, “‘Cassini” and “‘Deculas”.

“Decims” aka Pharaoh Cicadas

There are three species in this category:

  1. Magicicada septendecim (Linnaeus, 1758). 17-year life cycle. Broods: I-X, XIII, XIV.
  2. Magicicada neotredecim Marshall and Cooley 2000. 13-year life cycle. Broods: XIX, XXIII.
  3. Magicicada tredecim (Walsh and Riley, 1868). 13-year life cycle. Brood: XIX, XXII, XXIII.

Their songs are very similar, however, when M. neotredecim & M. tredecim emerge in the same location, M. neotredecim’s song takes a higher pitch. Sounds like “Pharaoh, Pharaoh!”.

Visual Appearance:

M. septendecim
Male on left; Female on right.

M. neotredecim & M. septendecim have broad orange stripes with more orange than black on their abdomens.

M. tredecim
M. tredecim, by comparison, have almost entirely orange abdomens.

eye to wing
M. septendecim cicadas also have an area of orange coloring between the eye and the wing (pronotal extension).

“Cassini” aka Dwarf Cicadas

There are two species in this category:

  1. Magicicada cassini (Fisher, 1851). 17-year life cycle. Broods: I-V, VIII-X, XIII, XIV.
  2. Magicicada tredecassini Alexander and Moore, 1962. 13-year life cycle. Broods: XIX, XXII, XXII.

Their songs are essentially identical:

M. cassini Call and Court:

Note how it makes a quick burst of sound, followed by some rapid clicks.

Visual Appearance:

M. cassini
Female on left; Male on right.
M. tredecassin & M. cassini cicadas have black abdomens with virtually no orange at all. Orange stripes are possible in the mid-west (important to note for Brood IV).


There are two species in this category:

  1. Magicicada septendecula Alexander and Moore, 1962. 17-year life cycle. Broods: I-VI, VIII-X, XIII, XIV.
  2. Magicicada tredecula Alexander and Moore, 1962. 13-year life cycle. Broods: XIX, XXII, XXIII.

Their songs are essentially identical:

M. tredecula Call:

Note the “tick, tick, tick” rhythm of the call.

Visual Appearance:

M. septendecula
Female on left; Male on right.
M. septendecula & M. tredecula have stripes that feature more black than orange. Otherwise, they’re very similar to M. cassini.

How to figure out if they’re coming to your town?

  1. Verify that they’re coming to your state. Check the Magicicada Brood Chart on this page.
  2. Check Cicada Brood Maps linked from this page to see if they’re coming to your general area.
  3. Check to see if they’re coming to your neighborhood. Good sources include:
    1. Check the Cicada Central Magicicada Database to see the counties where cicadas have appeared in the past.
    2. Ask someone who lived there 17 (or 13) years before.
    3. Old timers (hint: old timers usually call them locusts).
    4. Check your local Library for old newspaper articles.
    5. Check with a local college: contact the entomology, forestry, or agriculture-related departments.
    6. Your local national, state, county, and town parks department (parks and rec). Some county parks departments plan events around cicada emergences.
  4. When will they emerge?
    1. They will emerge sometime in the Spring, for sure.
    2. They typically emerge once the soil 8 inches (20 cm) below the surface gets to 64 degrees Fahrenheit (18 degrees Celcius). At that temperature, they will start digging their tunnels to the surface. After a couple of days with above-ground temperatures near the 80’s F, and after a good rain, they will emerge. Read this paper for more info: Thermal Synchronization of Emergence in Periodical “17-year” Cicadas (Homoptera, Cicadidae, Magicicada) by James Edward Heath, American Midland Naturalist, Vol. 80, No. 2. (Oct. 1968), pp. 440-448.
    3. Cicadas in sunny areas of your yard will emerge before cicadas in shady areas.
    4. Cicadas in the southernmost states will emerge before cicadas in the northern states.
    5. You can try the Cicada Emergence Formula as well.
  5. If you don’t want them to damage your young or ornamental trees
    1. Spray them off with a garden hose.
    2. Foil around the trunk (to keep them from crawling up) (thanks Deborah).
    3. Insect barrier tape.
    4. Netting wrapped around & over the tree. “Insect barrier netting”. “Fruit tree covers”.
    5. Bagpipes (no joke, it worked at my friend’s wedding).
    6. Don’t use pesticides – we like all insects (especially pollinating bees).
  6. Are you scared of insects?
    • Unlike some other insects & arthropods. cicadas are not poisonous or venomous.
    • Try a hat, an umbrella, a bee-keeper outfit, a suit of armor…
  7. They’re coming, and they’re going to ruin my wedding!

Questions about the Brood Chart

Question: Why do I have cicadas in my neighborhood, but your chart indicates that I shouldn’t?

Answer: Some possibilities: 1) they are stragglers, periodical cicadas that emerge too soon or late, 2) they are not periodical cicadas but are a different North American species, 3) you live on a continent other than North America, in which case, try one of these pages, or 4) SURPRISE! The U.S. is a big place and some cicada populations have yet to be documented.

Question: Why don’t I have periodical cicadas in my area, but the information on your website indicates that I should?

Answer: Two possibilities: 1) they went extinct or otherwise died off in your area, or 2) they aren’t everywhere in a state – normally there are large gaps in their range.

Question: What are stragglers?

Answer: 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. 17-year brood members are most likely to straggle 4 years early, and 13-year brood members are most likely to straggle 4 years late. Straggler probability chart.

Question: Are there other types of Periodical cicadas?

Answer: There are two known species of periodical cicadas that are not Magicicada . One lives in India and the other in Fiji.

Question: Why are there no Brood XI, XII, XV, or XVI?

Answer: Perhaps you’ve noticed there are no Broods XI (11), XII (12), XV (15), XVI (16), XVII (17), XVIII (18), XX (20), XXI (21), XXIV (24), etc. Don’t worry about that. They never existed or are extinct (XI, XXI).

Example Emergence Timeline

This is an example of a typical cicada emergence. The exact dates will depend on the weather and density of the emergence in your location. Hot weather means an early start and quicker finish to the season — cool weather means a later start and a protracted season.

May 30th Update

Here’s an Excel version of the chart. Feel free to use it and adjust it to match your experience.

Or watch the video version:

More Magicicada websites:

  1. For much more information about 17-year cicadas visit Cicadas @ UCONN. The maps on this page link to that site.
  2. The Cicada Safari App is available for Android and Apple devices. Use it to see where people are finding cicadas, and to report your sightings.
  3. A Tale of Two Broods: The 2024 Emergence of Periodical Cicada Broods XIII and XIX book by Dr. Gene Kritsky.
  4. Check the Cicada Central Magicicada Database to see the counties where cicadas have appeared in the past. For more information about this database and cicada research in general, visit the Simon Lab website.

More Magicicada Information

April 14, 2020

Magicicada tredecula Alexander and Moore, 1962

Filed under: Lamotialnini | Magicicada | Periodical | United States — Tags: — Dan @ 8:50 pm

Magicicada tredecula Alexander and Moore, 1962

Magicicada tredecula 2014 Ohio

Song type: Chorus

Source: ©Cicada Mania | Species: M. tredecula

Song type: Call

Source: Recorded in Ohio, Brood XXII (2013) by Roy Troutman. | Species: M. tredecula

Song type: Call

Source: ©Cicada Mania | Species: M. tredecula

Identification Tips

Smaller than M. neotredecim & M. tredecim. Orange stripes on its abdomen, through not as much as M. neotredecim & M. tredecim. Its chorus sounds like a ticking clock. Very similar to the 17-year M. septendecula.

Video Playlist

Playlists contain multiple videos found on YouTube.

Brood Chart

Magicicada tredecula has a 13-year lifecycle.

Brood Year States
XIX (19) 1972, 1985, 1998, 2011, 2024 AL, AR, GA, IL, IN, KY, LA, MO, MS, NC, OK, SC, TN, VA
XXII (22) 1975, 1988, 2001, 2014, 2027 KY, LA, MS, OH
XXIII (23) 1976, 1989, 2002, 2015, 2028 AR, IL, IN, KY, LA, MO, MS, TN

Name, Location and Description


Family: Cicadidae
Subfamily: Cicadettinae
Tribe: Lamotialnini
Subtribe: Tryellina
Genus: Magicicada
Species: Magicicada tredecula Alexander and Moore, 1962

List of sources

  1. Full Binomial Names:
  2. Common names:; The Songs of Insects by Lang Elliott and Wil Herschberger; personal memory.
  3. Locations: Cicadas @ UCONN (formerly
  4. Descriptions, Colors: personal observations from specimens or photos from many sources. Descriptions are not perfect, but may be helpful.
  5. Tribe information comes from: MARSHALL, DAVID C. et al.A molecular phylogeny of the cicadas (Hemiptera: Cicadidae) with a review of tribe and subfamily classification.Zootaxa, [S.l.], v. 4424, n. 1, p. 1—64, may 2018. ISSN 1175-5334. Available at:


  • Some descriptions are based on aged specimens which have lost some or a lot of their color.

March 28, 2020

2014 Emergence of 13-Year Magicicada in Ohio & Kentucky, part 2

Filed under: Brood XXII | Magicicada | Photos & Illustrations — Tags: , — Dan @ 7:20 pm

In 2014 I joined Roy Troutman in helping to map a brood of Magicicada that emerged in Ohio and Kentucky. When all was said and done, this brood was declared to be part of brood XXII.

Here’s my photos from this emergence. Skip to Part 1.

The “cicada track o matic” PC + GPS used to record locations where cicadas exist:
cicada track o matic

Molting Magicicada in Ohio:
Molting Magicicada in Ohio 2014

CICADA license plate:
CICADA license plate

Magicicada tredecula found in Ohio:
Magicicada tredecula 2014 Ohio

CICADAS license plate:
CICADAS license plate

The Cicadinator (never ever use this):
The Cicadinator

Magicicada tredecassini found in Kentucky:
Magicicada tredecassini Kentucky 2014

February 5, 2015

Visualizing all periodical cicada broods

Isn’t this a lovely picture (updated with colors sorted)?

All Broods

This image represents the combined range of all Magicicada periodical cicada broods, including the extinct Broods XI (last recorded in Connecticut) and XXI (last recorded in Florida).

To produce this image, I visited John Cooley’s Cicadas @ UCONN Cicada Geospacial Data Clearinghouse and downloaded the Shapefile of Magicicada broods. Then I used the computer program QGIS to change the Shapefile to a KML file, and then I opened the file in Google Earth. Credit goes to John for pulling the data together into the Shapefile.

I manually edited the KML file to try to give each Brood a different color.

An interesting area is Fredrick County, where 5 different broods seem to exist (or have existed) at once.
Fredrick County VA

Peach = Brood I
Green = Brood II
Purple = Brood V
Cyan = Brood X
Red = Brood XIV

It’s also interesting that four of the broods are separated by four years: X, XIV, I, V.

July 17, 2014

A Week of Mapping the Mysterious Ohio Kentucky Brood

Update: After emailing with Dave Marshall and John Cooley today (July, 17th), I learned that the ‘decim cicadas in this brood are Magicicada tredecim (not neotredecim), based on their lower-pitched sound and very-orange abdomens! This means that this brood is not related to Brood XIV or X at all, that these cicadas are truly 13-year cicadas, they might be related to Brood XXII and perhaps were once part of the same larger brood thousands of years ago.

Read on:

Back in 2013 Roy Troutman and his wife Michelle visited me in New Jersey to experience the Brood II cicada emergence. At that time, Roy extended an invitation to visit Ohio in 2014 to experience & map a mysterious brood that emerges every thirteen years near his family campsite. A year later, I took him up on his offer.

A very orange M. tredecim found by Roy in Ohio.
A very orange M. tredecim found by Roy in Ohio.

On June 1st I made the long drive from the Jersey Shore to south-west Ohio. The trip went smoothly, thanks to a well maintained car, a flash drive filled with 37 Gig of music, Red Bull, Monster Energy Drinks, some M&M candies and a tank and a half of gas. Sunday night I met Roy at his family home. After a quick dinner, we immediately went looking for cicadas in Point Pleasant, Ohio. Most of the cicadas had emerged from the ground a week or two ago, but we were able to find a few newly emerged specimens:

The following morning we visited the Crooked Run-Robert J. Paul Memorial Sanctuary in Chilo, Ohio, which is primarily a hardwood forrest along the Ohio River. The nature sanctuary was loaded with Magicicada tredecassini, healthy pockets of M. tredecula and a few M. tredecim. The cicadas were chorusing, feisty and already ovipositing (laying eggs).

So, why spend a week researching cicadas? Why ride in a car for dozens of hours tracking the locations of cicadas? Well, this mysterious Ohio & Kentucky brood is unique, and this would be the first time it was thoroughly mapped.

Why is this Ohio Kentucky brood unique?

  1. These cicadas have a 13-year life cycle. No other brood of periodical cicadas in Ohio has a 13-year life cycle. Note that two 13-year broods (XIX & XXIII) exist in Kentucky, but they are geographically isolated from the OH/KY brood.
  2. The OH/KY brood is also geographically isolated from Brood XXII, a brood of 13-year cicadas that emerged in Louisiana and Mississippi this year (2014). The OH/KY brood might be grouped with Brood XXII just by virtue of the fact that they emerge in the same cycle of years, but the two broods seem to be too far apart, geographically and probably genetically, to be related.
  3. They occupy a relatively small area of south-western Ohio, and north-central Kentucky.
  4. They are in relatively the same area as two 17-year broods, Brood XIV and Brood X. Brood XIV more so than Brood X.

The mystery is: why does this small, isolated brood of 13-year cicadas exist?

Roy Troutman and John Cooley have collected specimens, and the insects genetics will be studied to try to find an answer. Along with the results of genetic testing, the results of mapping will be considered, along with the past work of researchers like Lloyd and White, and local legend Gene Kritsky.

Mapping cicadas:

Mapping cicadas requires that you drive hundreds to thousands of miles, listening for cicadas, and recording the species and location. The hard parts are 1) picking out the individual species (particularly hearing individual deculas in the midst of loud chorus of cassini), and 2) driving slow enough to hear the individual species, without enraging local drivers. Discerning the songs of individual species is easy enough when you’re moving slowly or standing still, but at 55mph, you can hear the roar of a cassini chorus, but a more subtle ‘decim chorus, set deeper in the woods, will go unheard.

Thanks to John Cooley’s Map O Matic — a combination of a tiny laptop, Ubuntu Linux, a numeric keypad, a GPS puck, and some clever programming — marking the locations of Magicicada species is now a simple task. Drive around, and when you hear a heavy ‘decim chorus, you hit the 9 key, and the location is recorded. Hear a ‘cassini individual; hit a 4, and the location is recorded. Genius. I suppose the next best thing would be an app version.

cicada track o matic
The Cicada Map O Matic

Each day Roy planned the route and we started mapping. Roy driving; me pressing buttons. We traveled highways, and single-laned roads; through heavily populated suburbia with convenience stores selling Pork cracklings and fireworks, as well as, farm and forrest roads. Straight and fast. Winding and bumpy. Each day was amazing road trip for the sake of cicada research.

Mapping can be frustrating. Time limitations are frustrating. The cicadas only sing for a few weeks, so there is only so much time to hear and map them.

Google Maps, often used to visualize cicada mapping data, is frustrating as well. Google maps omits unincorporated towns and villages from their maps. Want to find Utopia, Ohio on Google Maps? According to Google Maps, it doesn’t exist.

Also, if you use an old map, beware; a road that existed 10 years ago, might now be a rocky field. One time we headed down a dusty road that looked like it connected to a major county road. Instead, Roy ended up breaking some part of his car on some bowling ball sized rocks, which I had to get out and move so we could backtrack to civilization. One positive: while rolling boulders, I heard an individual Magicicada tredecim, which are rare in this brood. Hit the 7 on the cicada Map O Matic.

The data from all this cicada mapping will be used by cicada researchers like Gene Kritsky and John Cooley to decode the mystery of this brood. If you’re curious, you can see the map here, or take a look at this short video, which crudely demonstrates the geographic proximity of Brood XIV, the OH/KY Brood and Brood X:

My trip to Ohio and Kentucky, was fantastic. I got to spend dozens of hours helping to map an important brood, hang out with a good friend, and even meet cicada research legend Gene Kritsky for breakfast. For a cicada fanatic, it doesn’t get much better.

A Magicicada tredecassini found in Kincaid Park, Kentucky.
A Magicicada tredecassini found in Kincaid Park, Kentucky.

I had such a good time, I headed home via Kentucky (which is not the way to go, if you’re going back to New Jersey). I stopped by Kincaid Park so I could hear all three species in one location. I even drove down the shoe road, and visited the Jim Beam distillery (which has little to do with cicadas, but why not).

After spending a week mapping cicadas, my respect for cicada researchers like Gene, John, Roy, Chris Simon, David Marshall and Jin Yoshimura has grown measurably. Mapping is not easy. It takes concentration, patience, a lot of expensive gasoline, and energy drinks. It’s worth it though. Hopefully I’ll get to do it again next year as well.

June 5, 2014

13-Year Cicadas to Emerge in Ohio & Kentucky in 2014

Magicicadas with a 13-Year life-cycle are emerging in Ohio & Kentucky, along the Ohio river, in 2014. This particular group of periodical cicadas last emerged in 2001 and 1988.

July 17th: I got confirmation from Dave Marshall and John Cooley that the ‘decim in the brood are Magicicada tredecim!

June 5th: Roy Troutman and I completed 3 days of cicada mapping in Ohio and Kentucky. This map includes our findings, Gene Kritsky’s findings and sightings submitted to Gene from local residents.

June 4th: Audio of a Magicicada tredecula call from the Ohio/Kentucky brood.

June 3rd: I spent the last last two days looking for cicadas in Ohio and Kentucky with Roy Troutman. Mostly ‘cassini, some ‘decula, and a very small amount of ‘decims. We found ‘cassini chorusing in Mason, KY, in the west, and so far as south as Neurls Run, KY. JoAnn White & Monte Lloyd’s paper 17-Year cicadas emerging after 18 years: A new brood?1 mentioned emergences in the Mason location, going back to 1975 (three 13 year generations ago).

2014 Ohio M tredecassini adult on leaf by Roy Troutman

2014 Ohio M tredecassini adult on leaf by Roy Troutman

May 31th: Cicadas are reported to be “loud and plentiful” in the Germantown KY area, as well as, Harrison county KY.

May 30th: Roy Troutman confirmed that ‘decula, ‘cassini and ‘decim type Magicicada have emerged in Ohio.

May 23th: Gene Kritsky wrote to let us know that “the emergence is now in full swing” in Ohio and Kentucky.

May 15th: Roy Troutman sent us a set of photos from Crooked Run Nature Preserve in Chilo, Ohio.

13 Year Nymph on tree by Roy Troutman taken in Chilo Ohio in 2014

13 Year Nymph on tree by Roy Troutman taken in Chilo Ohio in 2014

May 14th: Roy Troutman has reported that the emergence began last night in Chilo, OH according to a Clermont County Parks director. Cool weather this week (in the thirties!) will likely prevent more cicadas from emerging until next week (highs in 80s).

April 30th: Scientists ask for public’s help verifying cicadas hidden brood. Note: if you send your photos in to Dr. Kritsky, make sure Geo-Tag (Android) or Camera Location Services (iPhone) is turned on.

April 28th: Roy Troutman discovered cicada turrets, confirming the 2014 emergence of these cicadas.


I know what you’re thinking: are these cicadas part of Brood XXII? Time and research will tell. Brood XXII emerges in Louisiana and Mississippi, which are geographically isolated from Ohio & Kentucky, so the two groups of cicadas are likely to be genetically distinct (belonging to different mitochondrial haplotype groups at least). That said, Brood II, which emerges mostly along the east coast of the U.S., also emerges in Oklahoma, which is geographically isolated from the rest of that brood. So, the Ohio/Kentucky cicadas could logically be part of brood XXII.

Back in 2001 Roy Troutman, Les Daniels and Gene Kritsky reported this group of cicadas to Cicada Mania. Les reported both cassini and decim.

My guess is these cicadas are somehow descended from Brood X or Brood XIV 17-year cicadas, and that if they are 13-year cicadas.

I wrote Roy for a list of towns where these cicadas emerged in 2001, and he said:

Chilo, OH
Cold Springs, KY
Higginsport, OH
Neville, OH
New Richmond, OH
Point Pleasant, OH
Ripley, OH
Utopia, OH
Woodland Mound Park, Cinncinati, OH

View OH/KY 13 Year Brood in a larger map

Check out the paper 1 White, J., and M. Lloyd. 1979. 17-Year cicadas emerging after 18 years: A new brood? Evolution 33:1193-1199. It was the first to document this odd brood of cicadas, although it did not mention the 13 year periodicity.

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