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Magicicada periodical cicada Broods.

September 9, 2018

Brood VIII will emerge in 2019 in Pennsylvania, Ohio and West Virginia

Filed under: Brood VIII,Magicicada,Periodical — Dan @ 9:42 am

Brood VIII

Periodical cicada Brood VIII (Eight) will emerge in 2019 in western Pennsylvania, eastern Ohio, and the tip of the northern panhandle of West Virginia…

Hancock Count West Virginia

  • What:
    • Millions of these: Magicicada septendecim Brood VII 2018 09
    • 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 May and ending in late June. These cicadas will begin to emerge when the soil 8″ beneath the ground reaches 64 degrees Fahrenheit. A nice, warm rain will often trigger an emergence.
  • Where: TheSE COUNTIES:
  • Why: Why do they emerge in massive numbers every 17-years? In a nutshell, the long life cycle has helped them avoid gaining a specific above-ground predator, and the massive numbers allow them to satiate predators in general, allowing enough to survive and preproduce.

(In case you want to know I used this Retro Wave meme-maker for the 80s style images.)

September 7, 2018

Cicada Fun with Google Trends

Filed under: Australia,Brood X,Life Cycle,Periodical — Tags: — Dan @ 9:22 pm

Note: I originally took this article down because embedding Google Trends slowed down the loading of the page. I’m republishing without the embeds.

This article was inspired by Serious Fun with Google Trends by Simon Leather.

Google Trends is a Google website that lets you see trends in the search terms over time. When people search for “cicada” it usually means cicadas have emerged in their area at the time they search.

The following graph shows when people searched for “cicada” over the past 10 years in the United States. The largest spike, in May of 2004, coincided with the emergence of Brood X. See it on Google Trends.

Google Trends 2004-2015

You might think that periodical cicada emergences cause the largest spikes, but not always — and not just because periodical cicadas don’t emerge every year.

2004: Cicada searches spiked May 16-22, which was Brood X – Magicicadas.
2005: Jul 31-Aug 6 spike which was for Neotibicen Cicadas. No periodical cicadas.
2006: Aug 13-19, Neotibicen Cicadas. No periodical cicadas.
2007: May 20-26, Brood XIII – Magicicadas.
2008: Brood XIV Magicicadas emerged (spike Jun 8-14), but the largest spike was Jul 29-Aug 2, Neotibicen Cicadas.
2009: Aug 16-22, Neotibicen Cicadas.
2010: Aug 8-14, Neotibicen Cicadas.
2011: May 29-Jun 4, Brood XIX – Magicicadas.
2012: Jul 29-Aug 4, Neotibicen Cicadas.
2013: May 5-11, Brood II – Magicicadas.
2014: Brood XXII – Magicicadas had a relatively small spike May 25-31, compared with Aug 24-30 for Neotibicen Cicadas (late season due to cool weather). There was also a teeny bit of a spike around January of 2014 due to the “cicada 3301” meme/game.
2015: Brood XXIII & IV Magicicadas emerged (spike around Jun 7-13), but the largest spike was around Aug 9-15 for Neotibicen Cicadas.

Which cities had the most cicada searches over the past 14 years? Nashville, Baltimore, Cincinnati, Arlington, Washington, Alexandria, Pittsburg, St. Louis, Columbus, and Chicago. Time to move to Nashville.

Australia

In Australia, searches for “cicadas” peaks in December (summertime in Australia). It looks like there is a year-over-year pattern arising as well, with peaks every 4 years (2009, 2013, 2017) particularly, if you drill down to New South Wales.

Australia Google Trends

Japan

In Japan, searches for “セミ” peaks in August.

Google Trends Japan

Other countries

  • Argentina peaks in March for cigarra.
  • Brazil peaks in October and April for cigarra.
  • France peaks in July for cigales.
  • Mexico peaks in May or June for chicharra, but October for cigarra.
  • New Zealand peaks in February for cicadas.
  • South Korea peaks in July for 매미.
  • Spain peaks in July for cigarra.

Now I know when to visit these countries. :)

Try it yourself.

July 31, 2018

New paper: The periodical cicada four-year acceleration hypothesis revisited and the polyphyletic nature of Brood V

Filed under: Accelerations,Brood V,Chris Simon,Elias Bonaros,John Cooley,Magicicada,Periodical,Periodical Stragglers,Roy Troutman — Dan @ 5:50 am

A new paper about periodical cicadas! View it: https://peerj.com/articles/5282/

“The periodical cicada four-year acceleration hypothesis revisited and the polyphyletic nature of Brood V, including an updated crowd-source enhanced map (Hemiptera: Cicadidae: Magicicada)”

Authors: John R. Cooley​, Nidia Arguedas, Elias Bonaros, Gerry Bunker, Stephen M. Chiswell, Annette DeGiovine, Marten Edwards, Diane Hassanieh, Diler Haji, John Knox, Gene Kritsky, Carolyn Mills, Dan Mozgai, Roy Troutman, John Zyla, Hiroki Hasegawa, Teiji Sota, Jin Yoshimura, and Chris Simon.

Abstract:

The periodical cicadas of North America (Magicicada spp.) are well-known for their long life cycles of 13 and 17 years and their mass synchronized emergences. Although periodical cicada life cycles are relatively strict, the biogeographic patterns of periodical cicada broods, or year-classes, indicate that they must undergo some degree of life cycle switching. We present a new map of periodical cicada Brood V, which emerged in 2016, and demonstrate that it consists of at least four distinct parts that span an area in the United States stretching from Ohio to Long Island. We discuss mtDNA haplotype variation in this brood in relation to other periodical cicada broods, noting that different parts of this brood appear to have different origins. We use this information to refine a hypothesis for the formation of periodical cicada broods by 1- and 4-year life cycle jumps.

June 23, 2018

Brood VII, the Onondaga Brood, Will Emerge in New York State in 2018

Filed under: Brood VII,Magicicada,Periodical — Dan @ 1:01 am

Update (June 17th): I just got back from Onondaga county and I can report that the emergence is in full swing. Lots of chorusing and mating. The best locations are around the Onondaga Nation reservation. If you visit, please do not trespass into the reservation — there are plenty of cicadas outside of it. John Cooley of Magicicada.org said there are also reports of cicadas in the Green Lakes State Park.

Here’s a video montage:

And a gallery:

Brood VII Magicicada septendecim 2018 Syracuse.

About Brood VII

Periodical cicadas (Magicicada septendecim, people call them “locusts”) will emerge in the Finger Lakes area of New York state in 2018.

This group of cicadas is called Brood VII (7) and is known as the Onondaga Brood. This brood is shrinking, and will likely be the next periodical cicada brood to go extinct

A pair of Magicicada septendecim:
A pair of mating Magicicada septendecims found in Woodbridge Township NJ

More details:

  • What: Brood VII is the smallest periodical cicada brood in the U.S., and is isolated in the Finger Lakes area of New York State. Only one species of cicada belongs to the brood: Magicicada septendecim (click link for sounds, video). This cicada has a 17-year life cycle. Sadly, Brood VII will likely be the next Brood to go extinct.
  • When: June, but perhaps May if it’s a very warm year. Magicicada cicadas typically emerge in the spring, once the soil underground where they live reaches approximately 64 degrees Faraihneght.
  • Where: the Finger Lakes area of NY State.
    • Where they appeared (last) in 2001: Onondaga and Livingston.
    • The following counties have had these cicadas in the distant past: Cayuga, Livingston, Monroe, Onondaga, Ontario, Seneca, Steuben, Wyoming, York.
  • The Onondaga Nation survived starvation one year by eating these cicadas

Further reading / viewing / listening:

Papers about Brood VII

  • The Historical Contraction of Periodical Cicada Brood Vii (Hemiptera: Cicadidae: Magicicada by John R. Cooley, David C. Marshall and Chris Simon. J. New York Entomol. Soc. 112(2–3):198–204, 2004. Link to PDF download.
  • Decrease in Geographic Range of the Finger Lakes Brood(Brood Vii) of the Periodical Cicada (Hemiptera: Cicadidae: Magicicada Spp.) by Cole Gilbert and Carolyn Klass. J. New York Entomol. Soc. 114(1–2):78–85, 2006.

May 23, 2018

Brood X Stragglers Emerge in Ohio

Filed under: Brood X,Gene Kritsky,Magicicada,Periodical Stragglers — Dan @ 9:59 pm

Gene Kritsky, author of Periodical Cicadas. The Plague and the Puzzle, let us know that many of what are likely Brood X cicada stragglers have emerged around the Mount St. Joseph University campus, in Cincinnati, Ohio. It’s likely that cicadas are emerging elsewhere in the Cincinnati area.

This is significant because Brood X cicadas should not emerge until 2021.

This is a photo of a Magicicada periodical cicada emerging on the MSJ campus, courtesy of Gene:
2018 MSJ nymph

Quick facts:

  • Gene Kritsky is a periodical cicada expert and Dean of the School of Behavioral and Natural Sciences and Professor and of Biology at Mount St. Joseph University. Read more.
  • Brood X is a massive brood of Magicicada (the genus) periodical (the lifecycle type) cicadas that are set to emerge in 2021 in 15 states.
  • A straggler is a periodical cicada that emerges off-schedule, often a few years before or after the rest of its Brood.

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