periodical cicada

He’d noticed that back then, the periodical cicadas had a W on each wing, an obvious harbinger of war.

The periodical cicadas crawling out of the soil are part of Brood X, a group that erupts once every 17 years when the soil reaches about 64 degrees.

The current generation of periodical cicadas, Brood X, offers new fodder for scientists to study this unusual fungus.

In one column that month, I mused on the reasons periodical cicadas were put on earth and decided that at least one purpose must be to provide lazy columnists something to write about.

Brood X is the largest and most widespread group of periodical cicadas in the United States.

As if from some horror movie, cicada nymphs have been described as “boiling out of the ground.”

What the Tea Party needed was its own periodical, he concluded.

His paper commenced in March, 1803, in the 15th year of the colony, and was the first Australian periodical.

The celebrated Kepler discovered his canon for the periodical motion of the planets.

And at the foot of the same page there is a note in which it is stated that this "was probably some periodical paper of 1767."

They had also periodical conferences in London for a week at a time, at which they formulated a common policy.

He often took part in debates in parliament, and was a frequent contributor to periodical literature.