Before marbles, stamps and trading cards, there were cicadas.<\/p>\n
There are thousands of cicada species globally, but for Australian children the craze centres on one particularly collectible item: the greengrocer.<\/p>\n
\u201cIn both Sydney and Melbourne, greengrocers come out every now and again in fairly decent numbers, and they\u2019re coming out in leafy gardens and parks, quite close to where people are,\u201d says the environmental consultant Dr Lindsay Popple. Searching for and collecting cicadas has become an activity firmly entrenched in children\u2019s folklore, he says.<\/p>\n
Most of their lives are spent as nymphs underground, but when they emerge in late spring, greengrocers are bright and abundant.<\/p>\n
About the size of an eraser, this perfectly palm-sized minibeast comes in a variety of vividly coloured morphs, each with a nickname to match. There\u2019s the yellow Monday, the masked devil, red warrior and chocolate soldier, and the appropriately rare, blue moon. Who wouldn\u2019t want to collect them all?<\/p>\n
The greengrocer\u2019s peer, the yellow Monday cicada. Photograph: Ken Griffiths\/Alamy<\/p>\n
Dom Yates, a Guardian reader from New Zealand, is a fan. \u201cThey sing joyously after living years underground so we should appreciate their happy efforts all the more,\u201d he says.<\/p>\n
Unlike the North American cicada, which emerges in a 17-year cycle, greengrocers materialise en masse in alternating batches, roughly at seven yearly intervals, with 2027 the next big event.<\/p>\n
When cicada nymphs become adults, they shed their skins and grow wings, leaving behind their exoskeletons on trees and fences These are extra treasures for children to discover and stash inside lunchboxes.<\/p>\n
Every cicada species has its own acoustic identity, Popple says, and the Australian greengrocer, found along the east coast in some of the most populated parts of the country, is one of the loudest.<\/p>\n
Male greengrocers broadcast their tune throughout the day and at dusk to attract a mate. Photograph: FLPA\/Alamy<\/p>\n
Greengrocers produce two main tunes, one a continuous drone, and the other a kind of croaking pulse, using drum-like organs on either side of their bodies called tymbals, and amplifying the sound with their hollow abdomens.<\/p>\n
Popple says the males broadcast at intervals throughout the day and often at dusk, trying to attract a mate. Its Queensland cousin, the northern greengrocer, is known as the \u201cseven o\u2019clock cicada\u201d for its propensity to pipe up at dinnertime.<\/p>\n
It\u2019s a spectacular racket. \u201cClose to them, it\u2019s like being near a jet taking off, it\u2019s really loud,\u201d Popple says. \u201cOn a really, really, warm morning, if you get a really hot day, they can start up calling pretty early in the day, which can be a bit of a wake-up for some people.\u201d<\/p>\n
As the 16-year-old Guardian reader Matteo says: \u201cThey\u2019re loud and gorgeous and they climb trees and shout. What\u2019s not to love?\u201d Indeed.<\/p>\n
Greengrocer cicadas are among the loudest invertebrates on land, reportedly reaching volumes as high as 120 decibels<\/a> at close range \u2013 that\u2019s nearing the pain threshold for human hearing, according to the Australian museum.<\/p>\n In general, the closer you are the louder they sound.<\/p>\n But, perhaps luckily, if you get too close they\u2019ll stop singing.<\/p>\n It\u2019s invertebrate of the year again<\/a>! From August 3-12, every day we\u2019ll be celebrating one of the thousands of amazing invertebrates that our readers have nominated, and then, when you\u2019ve got to hear about all of them, we\u2019ll open the voting so you can choose your favourites. Don\u2019t hesitate to get in touch with thoughts and ideas: email us at environment.desk@theguardian.com<\/a> with Invertebrate in the subject line.<\/p>\n","protected":false},"excerpt":{"rendered":"Before marbles, stamps and trading cards, there were cicadas. There are thousands of cicada species globally, but for…\n","protected":false},"author":2,"featured_media":588204,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[61,60,82,263],"class_list":["post-588203","post","type-post","status-publish","format-standard","has-post-thumbnail","category-wildlife","tag-ie","tag-ireland","tag-science","tag-wildlife"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/588203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/comments?post=588203"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/588203\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media\/588204"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media?parent=588203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/categories?post=588203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/tags?post=588203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}