[DOC] [TLE] Periodical cicadas - Wikipedia [PAR] Magicicada is the genus of the 13-year and 17-year periodical cicadas of eastern 
North America. Although they are sometimes called "locusts", this is a misnomer, 
as cicadas .... The emergence period of large prime numbers (13 and 17 years) 
was ... lengthy and mathematically precise immature period of these insects. [DOC] [TLE] Periodical Cicada - Department of Entomology - Penn State University [PAR] Periodical cicadas are spectacular insects, often making sudden and dramatic 
appearances. ... The periodical cicada is a native North American species. It is 
the ... Periodical cicadas are commonly called or referred to as "17-year locusts. 
... Some American Indians thought their periodic appearance had an evil 
significance. [DOC] [TLE] Magicicada.org [PAR] Insect Singers ... Many people know periodical cicadas by the name "17-year 
locusts" or ... Other Common North American non-periodical cicadas include the 
large, ... Non-periodical cicadas are often called "annual cicadas" (even though 
they ... The date of emergence does not vary much between generations, 
although... [DOC] [TLE] Prime time for cicadas | Science News for Students [PAR] Called periodical cicadas, these insects live only in this part of the world, and 
they appear ... Other species, known as annual cicadas, make an appearance 
every year. ... On average, a population of annual cicadas spends between 2 and 
8 years underground ... The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, and 
19. [DOC] [TLE] Cicada Mania: Cicada News, Facts, Lifecycle & Sounds [PAR] Cicada Mania is dedicated to teaching you about cicada insects, their life cycle & 
life ... N. tibicen tibicen, a North American cicada with an annual lifecycle. ... 
Cicadas are called semi in Japan, cigale in France, and cigarra in Spain. ... with 
proto-periodical life cycles might emerge every year, but every so many years 
they... [DOC] [TLE] Periodical Cicada (17-year) | Chicago Botanic Garden [PAR] The periodical cicada (Magicicada), is a native North American insect ... The 17-
year periodical cicadas last emerged in the Chicago region in 2007. ... and twigs, 
where they split the bark and deposit between 24 and 48 eggs. Adult females 
mate many times and are capable of laying up to 600 eggs during their lifetimes. [DOC] [TLE] Cicadas, Cicada Pictures, Cicada Facts - National Geographic [PAR] Though cicada noises may sound alike to humans, the insects use different calls 
... Others are called annuals because, although individuals have multi-year ... 
The process varies in length but often takes a number of years. Periodical 
cicadas do not create destructive plagues, as some locusts do, .... Northern 
Leopard Frog. [DOC] [TLE] UMMZ Periodical Cicada Page [PAR] May 6, 2011 ... Insect Division ... ANNOUNCEMENT: 13-year periodical cicadas of Brood XIX are 
emerging ... synchronized; these are often called "annual" cicada species. .... 
Click on a brood number in the table below to see a larger-scale map of ... 
emergence is four-year premature appearances by 17-year cicadas, and... [DOC] [TLE] Cicadian Rhythms: Why Does the 17-Year Cicada Emerge Like ... [PAR] Jun 3, 2013 ... Periodical cicadas emerge in groups called broods, which include multiple ... 
emerging generally between late April and early June, depending on 
temperatures. ... By having a life cycle that is a prime number (as are 13 and 17), 
they ... They collected data from the North American Breeding Bird Survey on... [DOC] [TLE] Cicada 2016, How to Control Cicada Insect, 13 and 17 Year Locust ... [PAR] Cicada 2016, How to control Periodical Cicadas, 17 Year Locust insect life cycle. 
... While Cicadas are fascinating to some, their presence in big numbers, is ... 
Large spring hatches, called "broods", emerge in 13 year and 17 year cycles. [DOC] [TLE] Periodical Cicadas - Auburn University Entomology and Plant ... [PAR] Periodical cicadas are native inhabitants of the eastern United States. ... 
there was such a swarm of a certain sort of insects in that English ... Originally 
and for

Question: In the northern U.S. the number of years between appearances of the insects called periodic cicadas
Answer: 17