Cicada Mania

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April 5, 2015

Time to start looking for signs of periodical cicadas

Filed under: Magicicada,Periodical,United States,Video — Dan @ 1:01 am

Depending on where you live, it might be warm enough for periodical cicadas to start moving around underground, or start digging tunnels to the surface and building cicada “chimneys” above their holes. Report cicada nymph or adult sightings to Magicicada.org so cicada researchers will know where they are.

What to look for:

1) Animals can hear the cicadas stirring underground, and will try to dig them up and eat them. Look for holes (about the size of a walnut or larger) made by animals digging for cicadas.

Cicada holes

2) Look for cicadas under stones and slates. Some cicadas will burrow their way to the surface, but they hit a large stone or slate and can go no further.

If you find them in this situation, gently put the stone or slate back. They will usually find their way around the obstruction once the time is right.

One clue that a Magicicada nymph is not ready to emerge is their eyes are still white. Their eyes turn red/orange prior to emerging (a few retain a white/blue color).

3) Cicada holes are about the size of a dime. Cicada premptively dig holes to the surface and wait until the weather is nice enough for them to emerge. Sometimes you can see them down in the holes.

Cicada Holes

4) Cicadas form chimneys above their holes when the soil is moist or muddy. These chimneys might look like a simple golf ball sized dome or a structure over six inches tall.

Magicicada chimneys

cicada chimney

Periodical cicadas typically won’t emerge until their body temperature reaches approximately 65 degrees Fahrenheit (17-19.5 Celsius1). Their bodies are warmed by surrounding soil, or warm water from rain. A good rule of thumb is, if the soil 8 inches deep is 65°, the conditions are good that they might emerge.

1Heath, J.E. 1968. Thermal synchronization of emergence in periodical “17-year” cicadas (Ho- moptera. Cicadidae, Magicicada). American Midland Naturalist 80:440–448.

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 Magicicada.org 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.

November 20, 2014

Magicicada cassini singing on hand

Filed under: Brood XIV,Magicicada,Roy Troutman,Sounds,Video — Tags: — Dan @ 8:48 am

From Roy Troutman: “I shot a video back in 1991 of a 17 year Magicicada cassini singing right on my hand.”

Magicicada cassini singing on hand from Roy Troutman.

The excavation skills of cicadas

Filed under: Cicada Anatomy,Magicicada,Roy Troutman — Dan @ 8:01 am

Cicadas spend most of their lives, as nymphs, underground. The large forelegs of cicada nymphs are adapted to digging through soil.

cicada foreleg
Image from The Periodical Cicada: An Account of Cicada Septendecim, Its Natural Enemies and the Means of Preventing Its Injury by C.L. Marlatt. 1898.

These videos demonstrate Magicicada nymphs digging through soil.

Magicicada nymph excavating tunnel by Roy

This magicicada nymph is excavating a make shift tunnel sandwiched between two pieces of plexiglass.:

Magicicada nymph excavating tunnel from Roy Troutman.

Magicicada nymph emerging from burrow by Roy

Magicicada nymph emerging from burrow from Roy Troutman.

White eyed magicicada by Roy Troutman

Filed under: Eye Color,Magicicada,Periodical,Roy Troutman,Video — Dan @ 7:07 am

Here is a video of a rare white eyed magicicada. This is from a gene mutation that strepps the color from the cicadas eyes & also wings to some extent.

White eyed magicicada from Roy Troutman.

November 19, 2014

Which fungus attacks Magicicadas? Massospora cicadina

Filed under: Magicicada — Dan @ 8:32 pm

The fungus Massospora cicadina preys on Magicicadas cicadas. This is particularly interesting because the fungus is able to prey upon them in spite of their long 17 year life cycle (apparently fungi are not phased by prime numbers).

A photo by Roy Troutman from Brood XIV (2008):

Magicicada with fungus

Two photos by Dan Mozgai from Brood II (2013):

Male Magicicada septendecim infected with Massospora cicadina fungus

Magicicada septendecim with Massosporan fungus found at the Edison Memorial Tower Park in Edison NJ

Magicicada fungus (massospora cicadina)

magicicada fungus (massospora cicadina) from Roy Troutman.

Magicicada cassini calls, chorusing & responses to finger snaps

Filed under: Brood II,Magicicada,Periodical,Sounds,Video — Tags: — Dan @ 8:00 am

During the Brood II emergence in 2013, Elias Bonaros, Roy Troutman and I spent some time experimenting with coercing male Magicicada to call in response to finger snaps, which mimic the snap of a female cicada’s wings. This trick works fairly well with Magicicada, and can quickly be mastered once you work out the timing. Fingers, wall switches, and the zoom button on my Sony video camera do a good job at mimicking the snap of a females wings.

Magicicada cassini responding to fingersnaps

Magicicada cassini responding to fingersnaps.

I also recorded their calls in terms of decibels to see just how loud they could get. They can get very loud, but not as loud as a rock concert (see this db chart).

Magicicada cassini calling at 109db in Colonia NJ

Magicicada cassini calling at 109db in Colonia NJ.

Magicicada cassini chorusing center peaking at 85db

Magicicada cassini chorusing center peaking at 85db.

Video of Magicicada septendecula from Brood II

Filed under: Brood II,Magicicada,Ovipositing,Periodical,Video — Tags: — Dan @ 7:45 am

Here are two videos of Magicicada septendecula from Brood II.

Female Magicicada septendecula

Magicicada septendecula.

A female Magicicada septendecula ovipositing

A female Magicicada septendecula ovipositing.

November 2, 2014

Brood IV, the Kansan brood, will emerge in 2015

Filed under: Brood IV,Magicicada,Periodical — Dan @ 1:06 pm

2015 Brood IV

Brood IV, the Kansan brood, will emerge in Texas, Oklahoma, Missouri, Kansas, Nebraska, and Iowa, in the spring of 2015.

The cicada species that will emerge are Magicicada cassinii (Fisher, 1852), Magicicada septendecim (Linnaeus, 1758), and Magicicada septendecula Alexander and Moore, 1962. These periodical cicadas have a 17-year life cycle. The last time they emerged was 1998.

Counties:

Here is a list of the Counties where Brood IV periodical cicadas have appeared in the past. The data comes from the Cicada Central Magicicada Database. The bolded counties are the ones Cicada Central has specimens for, indicating that they’re more of a sure thing.

Iowa: Adair, Adams, Cass, Dallas, Fremont, Johnson, Mills, Montgomery, Page, Pottawattamie, Ringgold, and Taylor

Kansas: Allen, Anderson, Atchison, Bourbon, Butler, Chase, Cherokee, Coffey, Crawford, Doniphan, Douglas, Geary, Greenwood, Johnson, Labette, Linn, Lyon, Marion, Montgomery, Neosho, Osage, Pottawatomie, Riley, Saline, Sumner, Wilson, Woodson, and Wyandotte

Missouri: Atchison, Barton, Buchanan, Caldwell, Clay, Clinton, Daviess, Dekalb, Gentry, Grundy, Harrison, Holt, Jackson, Johnson, Lafayette, Livingston, Mercer, Nodaway, Pettis, Ray, Saline, Vern, and Worth

Nebraska: Cass, Douglas, Johnson, Nemaha, and Sarpy

Oklahoma: Bryan, Carter, Choctaw, Comanche, Cotton, Craig, Garvin, Grady, Lawton, Mayes, McCurtain, Muskogee, Noble, Osage, Ottawa, Pawnee, Rogers, Stephens, Tulsa, and Washington

Texas: Cooke, Denton, Fannin, Grayson, Kaufman, Lamar, Montague, Wise

Learn more about Brood IV:

Report cicada nymph or adult sightings to Magicicada.org so cicada researchers will know where they are.


Brood XXIII, the Lower Mississippi Valley brood, will emerge in 2015

Filed under: Brood XXIII,Magicicada,Periodical — Dan @ 12:38 pm

Brood XXIII, the Lower Mississippi Valley brood, will emerge in Louisiana, Mississippi, Arkansas, Tennessee, Missouri, Kentucky, Illinois, and Indiana, in the spring of 2015.

The cicada species that will emerge are Magicicada tredecim (Walsh and Riley, 1868); Magicicada neotredecim Marshall and Cooley, 2000; Magicicada tredecassini Alexander and Moore, 1962; and Magicicada tredecula Alexander and Moore, 1962. These periodical cicadas have a 13-year life cycle. The last time they emerged was 2002. According to John Cooley of Magicicada.org, Giant City State Park, Illinois is a good place to observe both M. tredecim and M. neotredecim.

Back in 2002, the emergence began in the last week of April, 2002, and ended the beginning of July. You can read what people said about them back in April, May, and June of 2002.

Here are the counties or parishes where folks reported the cicadas to Cicada Mania in 2002:

Arkansas: Bayou Deview Wildlife Management Area, Poinsett County, Devalls Bluff, Harrisburg, Holland Bottoms, Jacksonville, Jonesboro, Knox Co., Lake Hogue, Lake Poinsett State Park, Little Rock and Wynne.

Illinois: Anna, Carbondale, Carterville, Chester, Clinton Lake, Marissa and Robinson.

Indiana: Harmonie State Park, Hymera, Leanne, Richland, Sullivan And Posey Counties.

Kentucky: Benton, Calvert City, Gilbertsville, Henry County, Murray and Paducah.

Louisiana: Bastrop, Choudrant, Grayson and West Monroe.

Mississippi: Alva, Arlington, Booneville, Brandon, Clinton, Corinth, Desoto County, Florence, French Camp, Hernando, Holcomb, Houlka, Jackson, New Albany, Oxford, Potts Camp, Silver Creek, Tishomingo, and Water Valley.

Tennessee: Atoka, Benton, Cordova, Henry County, Huntingdon, Jackson, Lavinia, Leach, Lexington, McNeary County, Memphis, Paris, Savannah and Speedwell.

Brood XXIII reports from 2002

Report cicada nymph or adult sightings to Magicicada.org so cicada researchers will know where they are.

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