Broods - Cicada Mania

Magicicada periodical cicada Broods.

July 30, 2020

Southern Culture On The Skids – Cicada Rock 2020 (Brood IX)

Filed under: Brood IX | Music — Dan @ 9:11 pm

Southern Culture On The Skids released a cicada themed song for 2020: Cicada Rock 2020 (Brood IX). Enjoy!

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July 12, 2020

Chicago Area Periodical Cicada Emergences in 2020

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 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

Message: 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

Message: 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 (https://doi.org/10.1146/annurev.en.40.010195.001413).

Comments (5)

June 1, 2020

Brood V emerging 4 years late

Filed under: Brood V | Magicicada — Dan @ 10:11 am

Looking at the latest map from Cicada Safari app data, it appears that cicadas from Brood V are emerging 4 years late. 4 year Stragglers! 21-year-old cicadas! Look around Akron, Ohio, eastern Ohio, western Pennsylvania, northern West Virginia.

May 30 map - Now with Brood V

Here’s a link to the Brood V map on Magicicada.org.

For historical purposes, Here’s C. L. Marlatt’s map from 1914:

Marlatt, C.L.. 1914. The periodical cicada in 1914. United States. Bureau of Entomology

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Magicicada septendecim from Brood IX in Greenbrier County, WV

Filed under: Brood IX | Magicicada — Tags: M. septendecim — Dan @ 8:52 am

Magicicada septendecim cicada from Brood IX in Greenbrier County, WV. Photo by Tony Maro. Thanks Tony!

Tony Maro Greenbrier County WV

Comments (3)

May 27, 2020

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

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

17 & 13 Year Periodical Cicadas

🛑 This page is strictly for Magicicada periodical cicadas, aka 17 & 13-year cicadas, aka "locusts" (read why they’re called locusts).This does not cover annual cicada species in North America and other parts of the world.

News

📅 Brood X will emerge in the spring of 2021.

Researchers need your help! If you see a cicada, please report it using the Cicada Safari App 📱, available for Android and Apple phones. See a Live Map of sightings.

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	1952, 1969, 1986, 2003, 2020	2033 (-4), 2036 (-1)	Species: M. septendecim, M. cassini, M. septendecula. States: NC, VA, WV
X (10)	17	1953, 1970, 1987, 2004, 2021	2020 (-1), 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	2020 (-4), 2023 (-1)	Species: M. septendecim, M. cassini. States: IA, IL, IN, MI, WI
XIV (14)	17	1957, 1974, 1991, 2008, 2025	2021 (-4), 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	2020 (-4), 2023 (-1)	Species: M. tredecim, M. neotredecim, M. tredecassini, M. tredecula. States: AL, AR, GA, IA, IL, IN, KS, KY, LA, MD, MO, MS, NC, OK, SC, TN, VA
XXII (22)	13	1975, 1988, 2001, 2014, 2027	2023 (-4), 2026 (-1)	Species: M. tredecim, M. tredecassini, M. tredecula. States: KY, LA, MS, OH
XXIII (23)	13	1976, 1989, 2002, 2015, 2028	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.

Chimney

Holes

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.

Holes

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.

Nymph

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.

Teneral

How to tell the difference between the seven Magicicada species:

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:

Magicicada septendecim (Linnaeus, 1758). 17-year life cycle. Broods: I-X, XIII, XIV.
Magicicada neotredecim Marshall and Cooley 2000. 13-year life cycle. Broods: XIX, XXIII.
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, by comparison, have almost entirely orange abdomens.

eye to wing
M. septendecim 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:

Magicicada cassini (Fisher, 1851). 17-year life cycle. Broods: I-V, VIII-X, XIII, XIV.
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:

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

“Decula”

There are two species in this category:

Magicicada septendecula Alexander and Moore, 1962. 17-year life cycle. Broods: I-VI, VIII-X, XIII, XIV.
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:

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?

Verify that they’re coming to your state. Check the Magicicada Brood Chart on this page.
Check Cicada Brood Maps linked from this page to see if they’re coming to your general area.
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.
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 definitely 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 southern-most states will emerge before cicadas in northern states.
5. You can try the Cicada Emergence Formula as well.
If you don’t want them do damage your young / 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 placed 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 pesticide – we like all insects (especially pollinating bees).
Are you scared of insects?
- Unlike some other insects & arthropods. cicadas are not poisonous or venomous.
- Try a hat, an umbrella, a bee-keepers’ outfit, a suit of armor…
They’re coming, and they’re going to ruin my wedding!
- Try our Cicada Wedding Planner

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: Why are there no Brood XI, XII, XV, 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).

More Magicicada websites:

For much more information about 17-year cicadas visit Magicicada.org. The maps on this page link to that site.
The Cicada Safari App is available for Android and Apple devices 📱. Use it to see where people are finding cicadas, and to report your own sightings.
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

Comments (39)

April 18, 2020

Brood IX (9) will emerge in 2020 in North Carolina, Virginia and West Virginia

Filed under: Brood IX | Magicicada | Periodical — Dan @ 1:03 am

Periodical cicada Brood IX (9) emerged in the spring of 2020 in North Carolina, Virginia and West Virginia. The last time this brood emerged was in 2003. It will emerge again in 2037.

Researchers need your help! If you see a cicada, please report it using the Cicada Safari App 📱, available for Android and Apple phones.

Brood IX is interesting to researchers because it’s located very close to 5 other broods. In a normal year, researchers would be able to drive the roads of the area and map the location of the brood so we can get data as to where the broods intersect, but because of the current situation in the U.S., most if not all researchers will be able to travel — so we need you to let us know where they’re at. Read more on Magicicada.org.

What, when, where, and why:

What:

Adult, Nymph, Molting Cicada

Cicada insects with a 17-year life cycle.
Some people call them “locusts” but they’re really cicadas.
Which species: All three 17-year species, Magicicada septendecim, Magicicada cassini and Magicicada septendecula. How to tell the difference between the species.
NOT the green ones that arrive annually.

📅🌡️ When: Typically beginning in mid-May and ending in late June. These cicadas will begin to emerge approximately when the soil 8″ beneath the ground reaches 64 degrees Fahrenheit (Heath, 1968). 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.

🗺️ 🇺🇸 Where:

Virginia municipalities: Blacksburg, Bland, Callands, Christiansburg, Covington, Dry Pond, Ferrum, Martinsville, Roanoke, Salem, Vinton, and more.
Virginia counties: Allegheny, Bland, Franklin, Henry, Montgomery, Patrick, Pittsylvania, Roanoke.
North Carolina municipalities: Chestnut Hill, Ennice, Francisco, Hays, Kernersville, McGrady, Millers Creek, Mt Airy, North Wilkesboro, Purlear, Thurmond, Westfield, and more.
North Carolina counties: Ashe, Alleghany, Forsyth, Stokes, Surry, Wilkes.
West Virginia municipalities: Camp Creek , Elmhurst, Hinton, Jumping Branch, Spanishburg, and more.
West Virginia counties: Fayette, Greenbrier, Mercer, Monroe, Pocahontas, Summers.

A quick tip using data from the Cicada Safari app team:

Cicadas in the north-west areas are Brood IX (red). Cicadas south & east of that area (purple) are Brood XIX emerging early.

Maps, Apps, and Tips:

Magicicada.org has the most up to date maps.
📱 The Cicada Safari App is available for Android and Apple devices. Use it to see where people are finding cicadas, and to report your own sightings.
Historical county data is from the Cicada Central Periodical Cicada Record Database. Cities come from May 2003 reports and June 2003 reports.
Not sure? Ask someone in your community who lived there 17 years ago.

Why: Why do they stay underground for 17-years? The prevailing research suggests they’ve evolved a long, 17-year lifecycle to avoid predators that can 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.

The larger dots are valid. Tiny dots, no. See a modern map, or the Live Map from the Cicada Safari app.
Marlatt 1907 09 Brood IX

Comments (134)

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

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

Some Brood XIII “stragglers” emerged early in 2020. If you see a cicada and want to report it, the Cicada Safari App is available for Android and Apple devices 📱.

A particularly large amount of Brood XIII cicadas are emerging early this year. Here’s a news article and a note from the Illinois Extension. Thanks Neil for the links.

One thing that is important to determine is whether any of the off-schedule populations (especially the 4-year early and 4-year late ones) are large enough to persist and lay eggs. The big question is will they establish a new population? Please send photos of cicadas laying eggs. And if egg laying is extensive enough to damage branches, please send photos of that as well!

Some Brood XIII cicadas are emerging 4 years early, particularly in the Chicago area in 2020. Blue in the map below:

May 30 map - Now with Brood V

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.

What, when, where, and why:

What:

Millions of these:
Adult, Nymph, Molting Cicada

Cicada insects with a 17-year life cycle.
Some people call them “locusts” but they’re really cicadas.
Which species: All three 17-year species, Magicicada septendecim, Magicicada cassini and Magicicada septendecula. How to tell the difference between the species.
NOT the green ones that arrive annually.

When: Typically beginning in mid-May and ending in late June. These cicadas will begin to emerge approximately when the soil 8″ 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.

Where:

Magicicada.org has the most up to date maps.

Illinois places: Belvidere, Brookfield, Channahon, Chicago, Des Plaines River Trail, Downers Grove, 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, 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 places: Aurora University, Big Foot Beach State Park, Lake Geneva, Moraine Nature Preserve, and more.
Wisconsin counties: Crawford, Grant, Green. Rock, Walworth.
Indiana places: Crown Point, Portage, Purdue-North Central, Valparaiso, and more.
Indiana counties: LaPorte, Porter, Lake.
Michigan: According to Magicicada.org, Magicicada have been found along the border of Michigan and Indiana.

More Location Tips:

County data is from the Cicada Central Periodical Cicada Record Database. Cities come from May 2007 reports and June 2007 reports.
Not sure? Ask someone in your community who lived there 17 years ago.

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

Comments (29)

Periodical cicada Brood X (10) will emerge in 15 states in 2021

Filed under: Brood X | Magicicada | Periodical — Dan @ 1:01 am

If you see a cicada and want to report it, the Cicada Safari App is available for Android and Apple devices 📱.

Periodical cicada Brood X (10) will emerge in the spring of 2021 in Delaware, Georgia, Illinois, Indiana, Kentucky, Maryland, Michigan, North Carolina, New Jersey, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and Washington D.C.

The last time this brood emerged was in 2004.

What, when, where, and why:

What:

Billions of these:

Adult, Nymph, Molting Cicada

Cicada insects with a 17-year life cycle.
Some people call them “locusts” but they’re really cicadas.
Which species: All three 17-year species, Magicicada septendecim, Magicicada cassini and Magicicada septendecula. How to tell the difference between the species.
NOT the green ones that arrive annually.

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

Magicicada on an iris flower in Scotch Plains by Judy Lanfredi

Where:

Magicicada.org has the most up to date maps.

Places = cities, towns, communities, parts, etc. where people told us they emerged back in 2004.

Delaware counties: Kent, Sussex
Delaware places: Newark, Wilmington
Georgia counties: Union, White
Georgia places: Blairsville, Ellijay, Norcross
Illinois counties: Edgar, Clark, Crawford, Vermilion
Illinois counties: Marshall
Indiana counties: Brown, Clark, Clay, Crawford, Daviess, Dearborn, Dubois, Fountain, Gibson, Greene, Jackson, Jefferson, Jennings, Lawrence, Martin, Monroe, Montgomery, Orange, Owen, Parke, Perry, Pike, Ripley, Spencer, Sullivan, Vanderburgh, Vigo, Warrick
Indiana places: Bloomington, Brookville, Clinton Falls, Dillsboro, Fishers, French Lick, Indianapolis, Lawrenceburg, Lexington, Martinsville, McCormick’s Creek State Park, Nashville, North Vernon, Skiles Test Park, Spencer
Kentucky counties: Boone, Breckenridge, Bullitt, Carroll, Daviess, Gallatin, Grayson, Henry, Jefferson, La Rue, McLean, Muhlenberg, Nelson, Ohio, Oldham, Trimble
Kentucky places: Big Bone Lick State Park, Covington, Dayton, Florence, Ft. Thomas, Hebron, Louisville.
Maryland counties: Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Garrett, Harford, Howard, Montgomery, Prince Georges, Washington
Maryland places: Abingdon, Annapolis, Aspen Hill, Baltimore, Bel Air, Beltsville, Bethesda, Bowie, Brooklandville, Brooklyn Park, Catonsville, Chevy Chase, Clinton, College Park, Columbia, Crofton, Cumberland, District Heights, Eldersburg, Elkridge, Elkton, Ellicott City, Fair Hill, Fallston, Forestville, Gaithersburg, Gambrills, Germantown, Glen Burnie, Glenelg, Greenbelt, Gwynn Oak, Hagerstown, Hanover, Havre De Grace, Hillcrest Heights, Hunt Valley, Hyattsville, Hydes, Jessup, Landover Hills, Laurel, Lutherville, Odenton, Oella, Owings Mills, Pikesville, Potomac, Randallstown, Reisterstown, Riverdale, Rockville, Severna Park, Sharpsburg, Silver Spring, Takoma Park, Timonium, Towson, Wheaton
Michigan counties: Hillsdale, Washtenaw
Michigan places: Ann Arbor, Canton, Quincy
North Carolina counties: Cherokee, Surry, Wilkes
North Carolina places: Morganton, Murphy
New Jersey counties: Burlington, Hunterdon, Mercer, Salem
New Jersey places: Browns Mills, Harmony, Hillsborough, Holland Township, Kingwood Township, Merrill Creek Reservoir, Milford, Monmouth Junction, Morristown, Pennington, Princeton, Sourland Mountain
New York counties: Suffolk
New York places: Stony Brook, LI
Ohio counties: Defiance, Franklin, Greene, Hamilton, Logan, Montgomery
Ohio places: Anderson Twp, Battelle Darby Park, Bellbrook, Cincinnati, Columbus, Defiance, Delaware, Delhi Twp, Dublin, Fairfield, Galloway, Hamilton, Kettering, Lewisburg, Lockland, Miamisburg, Olmsted Falls, Oxford, Springfield, St. Bernard, West Carrollton, West Chester
Pennsylvania counties: Adams, Bedford, Berks, Bucks, Chester, Columbia, County, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Lancaster, Lehigh, Luzerne, Lycoming, Mercer, Montgomery, Northampton, Perry, Schuylkill, Somerset, York
Pennsylvania places:Archbald, Artemas, Bedford, Carroll Valley, Coopersburg, Dinosaur Rock, Downingtown, Gettysburg, Green Lane, Kintnersville, Lake Nockamixon, Lancaster, Lititz, Malvern, Mertztown, Mohnton, Mt Gretna, Oaks, Oley, Perkiomenville, Phoenixville, Pittston, Quakertown, Red Lion, Roaring Spring, Solebury, Spring Mount, Stewartstown, Topton, Upper Black Eddy, Warwick Park
Tennessee counties: Blount, Greene, Hamblen, Jefferson, Knox, Roane, Sumner, Wilson
Tennessee places: Copperhill, Farragut, Fayetteville, Knoxville, Oak Ridge.
Virginia counties: Arlington, Clarke, County, Dulles Smithsonian National Aircraft and Space Museum, Fairfax, Fauquier, Frederick, Shenandoah, Warren, Winchester
Virginia places: Alexandria, Annandale, Arlington, Ashburn, Centreville, Chantilly, Clearbrook, Doswell, Dunn Loring, Fairfax, Falls Church, Franconia, Haymarket, Herndon, Lorton, Lovettsville, Manassas, Oakton, Reston, Springfield, Vienna, White Post, Winchester.
West Virginia counties: Berkeley, Grant, Hampshire, Hardy, Jefferson, Mineral, Morgan
West Virginia places: Martinsburg, New Creek
Washington D.C.