Talk:Periodical cicadas

message: But time isn't an integer.
: Reply: A year is an integer. Other species, both competitors and predators, have cycles based on years, whether annual, biannual, triannual, or whatever. I wonder if the prime-numbered cycle is a result of natural selection. If a predator or competitor emerges on non-prime years (excluding annual cycles), the cicadas that have prime-number cycles will almost always avoid the cycles of their competitors and predators. It appears to me to be a very predictable adaptation arising from natural selection. 
: The 13- and 17-year cycles would also lead to a doubling of the population every 221 years. (13 x 17 = 221) If predator satiation works for either population, it should work fabulously for the combined 13- and 17-year populations.— Preceding unsigned comment added by 207.225.1.19 (talk) 01:29, 25 July 2011 (UTC)
replies: text:  Reply: The main general problem with this explanation is that many cicadas, if not all of them, have problems with predators and parasites, but only one of the hundreds of genera (species groups) of cicadas has evolved long, prime-numbered life cycles.  If predators are involved, it is only part of the explanation.  — Preceding unsigned comment added by 24.177.86.119 (talk) 00:33, 9 April 2016 (UTC)
replies: text:  Perhaps; but recall that evolution is not a straight-line process, and chance is part of it. Better to think of a hilly surface, where the z-axis shows increased chance of survival. A species in a valley might 'move' up any of the neighbouring hills; once halfway up one hill, there is advantage in climbing higher, away from other choices which might, perhaps, have proven more advantageous, but are no longer available. Adaptation, in other words, always has history as well as reason. Chiswick Chap (talk) 08:11, 9 April 2016 (UTC)
thread_title:  Prime numbers 

message: There have been sightings of cicada in Daegu, Korea  at the moment. Not sure if this is contradictory te the paragraph about there are no broods expected in 2005-2006.
: The ones in Korea aren't Magicicada, but another species.  take a look at Cicadas in Korea Lorax 11:00, 30 July 2006 (UTC)
thread_title:  Cicada in 2006 

message: A reference to Cicada Killer Wasps was recently removed because its text was self-contradicting. Specifically, it claimed that these wasps fed on cicadas that die off before the wasps emerge. I don't know where the errors are in such a claim, but I do have a photo (that I just took hours ago) that show a wasp — similar to but not quite like the CKW photo — and a Brood X cicada. I ask that all you cicada and wasp experts out there look it over and tell me if it sheds any light on this issue. -- Jeff Q 04:23, 30 May 2004 (UTC)
thread_title:  Cicada Killer Wasps 

message: Speaking of dictionaries, I vote we do away with the word "periodical" as applied to cicadas. The proper word is "periodic." The former denotes something published at regular intervals. Extra(neous) syllables have no place in a scientific article, even if the erroneous term has come into popular usage.
::I agree and have begun the purge. 67.167.116.8 (talk) 16:43, 8 March 2009 (UTC)
replies: text: Nice idea, but look at the terminology used in every single reference and external link in the article. The proper term is 'Periodical.' Look it up. --| Uncle Milty | talk | 20:54, 8 March 2009 (UTC)
replies: text: Rather snide, that "look it up", considering you couldn't possibly have looked it up yourself, unless you are one who thinks dictionaries are correct only when they agree with your personal definition. There are no ambiguities in the dictionary definitions of those two words. "Periodical" does not mean what you think it does, and it is not the proper adjective for the creature in question. Instead of repeating the mindless "Everybody else does it that way" non-excuse, why not think for yourself and admit you made a mistake? Nickrz (talk) 22:06, 13 March 2009 (UTC)
replies: text: You're right about the lack of ambiguity in the dictionary definition: "Periodical: adjective [ attrib. ] occurring or appearing at intervals; occasional : she took periodical gulps of her tea". And, as I said the first time: Every single reference and external link in the article uses 'Periodical.' I did bother to look. Apparently, people smarter than either of us think that 'Periodical' is the correct adjective. --| Uncle Milty | talk | 01:45, 14 March 2009 (UTC)
replies: text: You're both bad people.  Anyway, It looks like periodical in culture has two forms.  Periodic has one.  I say keep it simple, use periodic.  —Preceding unsigned comment added by 99.225.102.157 (talk) 18:30, 26 July 2010 (UTC)
thread_title:  Periodical 

message: From my math there will be a "brood" invading Cape Cod this summer (2006)  This will be the 3rd brood that I've seen in these parts, but perhaps it's more like a minor infestation that is so localized it might not even qualify as a brood.  Curious to know.
Hate to tell you, but there's one hell of a brood coming out in Georgia RIGHT NOW (April 28, 2011) - This started about 5 days ago.  —Preceding unsigned comment added by 98.66.135.111 (talk) 21:08, 28 April 2011 (UTC)
thread_title:  Broods 

message: This article gives the impression that Magicicadae are known only in the United States, but does not say so explicitly.  If this is not so, then mention should be made of their presence in other countries; if it is so, then the opening paragraph probably should state such.
Magicicadae definitely exist outside of the territorial boundary of the United States.  The article, particularly the Brood Lists, should note the extent of the habitat that exists in Canada.  As it is right now, it appears that the 45th parallel north is a magical barrier.  — Preceding unsigned comment added by 99.232.5.10 (talk) 01:28, 27 March 2013 (UTC)
thread_title:  Other Countries? 

message: I have a question for any wikiexperts on the 17 year cicadas that have appeared this summer around Chicago. What influences their distribution (specifically on a small scale)? I grew up in Northbrook (a northern suburb of Chicago), and in 1990 the cicadas were EVERYWHERE. I've observed that the same is true in Northbrook during this 2007 cycle. However, I now live in Morton Grove, another suburb about 10-15 miles to the south. The cicadas are not even close to being as loud or as plentiful as in Northbrook.
I'm curious as to what explains this difference. The two suburbs I named are only about 10 miles apart. Both are suburban communities with large numbers of trees. So why, then, does Northbrook have so many more magicicadas? Perhaps there is a difference in the species of trees planted in each community?
I welcome any answers, or even speculations, than anyone else can provide.
Thanks------Ericcjensen 17:50, 25 June 2007 (UTC)
replies: text: Probably Dogday harvestfly. We have those in Minnesota too. They're annual cicadas, so there should be about the same number every year and there are no broods unlike the periodical cicadas. 70.99.104.234 (talk) 03:24, 9 July 2012 (UTC)
thread_title:  Causes of the Distribution of Magicadas, specifically the 2007 'Chicago' Brood 

message: They are here! They came out around June 1, went through all the changes, and now are just incredibly loud. I don't know if they are all over the Cape, but they are definitely here in Bourne!  —Preceding unsigned comment added by 75.67.180.218 (talk) 02:02, 20 June 2008 (UTC)
thread_title:  CapeCod Cicada 2008 

message: I live in South Carolina and I noticed where some sort of insect (maybe not a cicada) has emerged all at once.  i thought it was an ant infestation until i noticed they were literally EVERYWHERE and had no ants in them.  Is it possible there's a "brood" that emerged in 2009?  Could it just be a localized group?  I noticed there's no mention of one for 2009 in the article.  —Preceding unsigned comment added by 167.7.17.3 (talk) 17:43, 24 March 2009 (UTC)
thread_title:  2009 

message: So I just want to note that it says in the description section that "young plants may be damaged by excessive feeding or egg laying" in fact, cicadas in their adult forms don't feed at all.  They don't even have mouth parts capable of feeding.  — Preceding unsigned comment added by 71.236.161.10 (talk) 06:14, 27 May 2011 (UTC)
replies: text: Magicicada adults don't eat plant leaves but they do feed on twigs by piercing the bark and sucking out plant juice. "Contrary to popular belief, adults do feed by sucking plant fluids; adult cicadas will die if not provided with living woody vegetation on which to feed (see picture below of Magicicada septendecula feeding. Adult Magicicada feed from a wide variety of deciduous plants and shrubs, but usually not from grasses. The piercing-and-sucking mouthparts are visible just behind the forelegs). "  Sharktopustalk 22:18, 9 June 2011 (UTC)
thread_title: Popular belief that adult cicadas do not eat

message: Historically, Brood XIX doesn't include Kanasas but this year some Magicicada have turned up in Kansas. Until/unless WP:RS agree that those are Brood XIX, Wikipedia can't add Kansas to the Brood XIX range based on observing cicadas in Kansas. Apparently scientists suggest otherwise: "There have been a number of reports from Kansas, but that might be Brood IV (a 17 year variety) stragglers emerging 4 years early, or perhaps Brood IV(4) is accelerating to join Brood XIX."  Sharktopustalk 23:01, 11 June 2011 (UTC)
thread_title:  Magicicada in Kansas, 2011 -- are they Brood XIX? 

message: Is there a source anywhere for this claim that cicadas have decimated squirrel populations? This is a very depressing statement left unsourced; if it can't be sourced, I suggest that it is removed.  — Preceding unsigned comment added by Hgentry (talk • contribs) 02:26, 9 April 2013 (UTC)
thread_title:  The Squirrel Decimation Remark 

message: I think the table of broods has the wrong states for XXIII (23). The states listed are not "Lower Miss. River Valley," and this site lists AR, IL, IN, KY, LA, MO, MS, TN, which (1) sounds much more plausible and (2) matches my personal experience of 2002 in Oxford, MS. The cicadas were sufficiently prolific that my law school graduation photo shows one on my robe. Does any real cicada expert agree? --Tbanderson (talk) 18:11, 10 April 2013 (UTC)
thread_title:  Brood XXIII 

message: The article places Magicicada in the order Homoptera, but Homoptera is actually a suborder. The actual order of Magicicada is Hemiptera, and the comparison with locusts as well as the sidebar describing scientific classification should read as such.  — Preceding unsigned comment added by 24.190.101.254 (talk) 22:22, 29 May 2013 (UTC)
thread_title:  Order? 

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thread_title:  External links modified 

message: The table still says Brood IX next emerges in 2020.  It is now five days into 2021.  An emergence of cicadas is likely to be covered by news stories; since they just kind of peter out, there are not likely to be news stories announcing the end of one.  At what point can we update the table to say that the MOST RECENT appearance of Brood IX WAS 2020, and the NEXT one will be 2037? Uporządnicki (talk) 19:29, 5 January 2021 (UTC)
replies: text: , I'd say we can do that today. It's 2021 - logic dictates the chart should tick forward. Ganesha811 (talk) 20:14, 5 January 2021 (UTC)
thread_title:  Brood IX--when can we say it's over? 

message: so, im not sure if this image is better, but it is a bit future proof. it does cover a much smaller area though. https://cicadas.info/wp-content/uploads/2015/11/area_map34.gif Bumpf (talk) 13:21, 19 May 2021 (UTC)
replies: text: 'Course the 64 dollar question is, can we use it! Uporządnicki (talk) 15:53, 19 May 2021 (UTC)
replies: text: It's missing several Broods, and also fails to indicate that the next emergence of Brood XIX is in 2024. Not clear what the data source is, either. The existing map is very explicitly based on published county records, and while it may need updating, it is very precise. Dyanega (talk) 17:10, 19 May 2021 (UTC)
replies: text: I've just noticed something else.  Of the broods it covers, one, Brood XIX, just thrown in the middle, is a 13-year Brood; the rest are 17.  They did get the year series right, but other than the 13-year interval (which one might or might not notice) there's nothing to separate it out for the reader. Uporządnicki (talk) 19:42, 19 May 2021 (UTC)
thread_title:  updated map image?? 

message: An IP user (from an address that has apparently made another edit) just deleted the map; the explanation was "incorrect map."  Unless serious errors are shown to be in the map, I think it should stay until someone finds a better one THAT WE CAN ACTUALLY USE.  (This one is a US Gov publication--thus public domain.)  If this IP user's objection is that the dates of next emergences are out of date, I think we just note that the source is several years old, and work around that--refiguring as needed. Uporządnicki (talk) 13:50, 24 May 2021 (UTC)
replies: text: I meant to write an address that has NEVER made another edit. Uporządnicki (talk) 19:16, 24 May 2021 (UTC)
thread_title:  Someone deleted the map (I put it back)