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June 6, 2013

How loud/noisy (in decibels) do periodical cicadas get?

Last Thursday Roy Troutman, Elias Bonaros and I traveled around central New Jersey, looking for cicadas. They were not hard to find. Elias found a location in Colonia that had a particularly loud Magicicada cassini chorusing center. Using my camera and Extech 407730 40-to-130-Decibel Digital Sound Level Meter, I recorded the calls of these cicadas and how loud they can get. The quality of the video isn’t the best because it’s a camera, not a video camera, but it is good enough.

Magicicada cassini chorusing center peaking at 85db (on Vimeo):

Magicicada cassini chorusing center peaking at 85db from Cicada Mania on Vimeo.

Elias and Roy used finger snaps, mimicking the wing snaps of female cicadas, to trick the males into singing:

Magicicada cassini responding to fingersnaps (on Vimeo):

Magicicada cassini responding to fingersnaps from Cicada Mania on Vimeo.

We placed the M. cassini directly on the microphone and got calls as high as 109 decibels, in this video:

Magicicada cassini calling at 109db in Colonia NJ from Cicada Mania on Vimeo.

There were a few M. septendecim in the area as well. A Magicicada septendecim goes from a Court II to Court III call as soon as it crawls on the decibel meter, in this video.

Magicicada septendecim court 3 from Cicada Mania on Vimeo.

The cicada choruses in Central New Jersey have no doubt gotten louder since last week. Hopefully on Sunday I’ll get back out to Central Jersey or Staten Island and make some recordings.

May 30, 2013

Female Magicicada septendecula

Filed under: Brood II,Elias Bonaros,Magicicada,Periodical,Video — Tags: — Dan @ 9:45 pm

Here’s a video of a female Magicicada septendecula found in Woodbridge Township, NJ (near Metro Park).

Here is a still photo:


Female Magicicada septendecula found in Woodbridge Township NJ

This is a male Magicicada septendecula:


Male Magicicada septendecula found in Woodbridge Township NJ

July 28, 2010

Tibicen auletes aka Northern Dusk-singing Cicada

Filed under: Elias Bonaros,Tibicen — Tags: — Dan @ 9:01 pm

New Tibicen auletes photos from Elias Bonaros.

The Tibicen auletes aka Northern Dusk-singing Cicada is the largest of the Tibicen cicadas in the U.S.A.

Tibicen auletes

July 1, 2010

Okanagana rimosa nymph skins

Filed under: Elias Bonaros,Okanagana,Proto-periodical — Tags: — Dan @ 10:20 pm

The Okanagana rimosa, also known as Say’s Cicada, is a cicada that can be found in the USA in northern states east of the Rockies, like New York, Pennsylvania, Michigan, Wisconsin, Minnesota, North Dakota and all New England states. Say’s cicada can also be found in the Quebec, Ontario, and Manitoba provinces of Canada.

Say’s Cicada is black and orange; orange legs, orange markings on its mesonotum, and orange bands around most segments of its body. Here’s a photo of an adult:

O. rimosa

A few weeks ago Elias Bonaros sent us some photos of the exuvia (shed skins) of Okanagana rimosa nymphs that he found while searching for cicadas in Western Massachusetts with Gerry from Massachusetts Cicadas. It’s interesting that the black bands that appear around the segments of the nymph’s body are where we see orange bands in the adult form.

skin

Say’s cicada has a fantastic call that needs to be heard to be appreciated. Visit the Songs of Insects website to hear the call of a Okanagana rimosa.

An interesting note about the Okanagana rimosa, it has been showed to have a 9 year life cycle, and appears to be protoperiodical:

“Soper et al (112) showed experimentally that Okanagana rimosa had a life
cycle of 9 years, and that in the field during a 9-year period (1962 to
1970) it was extremely abundant in 4 years and scarce or absent in the
other 5. Heath (32) also studied cicadas of the genus Okanagana and
found several species that appear to be protoperiodical.”

Source.

March 29, 2010

New Magicicada nymph photos

Filed under: Elias Bonaros,Magicicada — Dan @ 5:05 am

Elias went digging for Magicicada nymphs on 3/21. Here’s a gallery of the nymphs he found.

nymph

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