It gives me great pleasure to take a moonlight walk on these warm summer nights, serenaded by a gazillion insect musicians. Pulsing in unison with a background of cricket chirps, it reminds me that summer is waning and I must enjoy what remains!
As birds grow silent with nesting season past, I become aware of the gradually intensifying chorus of the inset tribe- a cacophonous mixture of chirps, trills, ticks, scrapes, shuffles, and buzzes. What a joy to behold these choruses of males, serenading females of their own species until cold weather dampens the chorus and heavy frost finally brings it to a close. Crickets, katydids, grasshoppers, and cicadas are prominent songsters. They can be found in trees, shrubs, lawns, fields, woodlands—nearly all habitats, and sometimes inside our homes.
My USU entomologist friend recommends the Snowy Tree Cricket as a champion night chorister here among the insects. It’s “snowy” name is derived from its pale coloration causing it to appear white. Snowy Tree Crickets sing from brushy understory plants at forested margins or within open woodlands. During cold spells, they can be found close to the ground on the trunks of small trees where they find a warmer micro-climate. It is also referred to as the “thermometer cricket” due to its accuracy of giving the temperature in degrees F. Just count the chirps for 15 seconds and add 40.
The Spring and Fall Field Crickets are next in line as musicians. They look very similar to each other, but are two different species. The season they appear helps identify them. Another difference is their life histories. Fall Field Crickets overwinter as eggs while the Spring version as nymphs.
Spring Field Crickets develop quickly when warm weather arrives and adults typically appear and begin singing and mating in late spring, continuing until late June or early July when they finish laying eggs and die off. In contrast, Fall Field Crickets hatch in the spring, and adults don’t appear and begin singing until mid to late July, after which they continue singing and mating into the autumn, when they are finally killed by frosts. In most areas of overlap, there is a period of silence in midsummer when neither species is heard.
Finding and identifying a singing insect can be a fun challenge. With the help of a flashlight and considerable patience, you will be able to track down individual singers, and perhaps even view a singing performance firsthand! Many are small and well camouflaged in their green and brown coats, and they sit motionless when singing, blending into their surroundings. Many sing only in the dark of night. Use LED lights as their spectrum seems to enhance finding them.
Check out these glorious beings at songsofinsects.com.
Jack Greene for Bridgerland Audubon Society, I’m wild about Utah!
Images: Katydid, Courtesy US FWS, Dr. Thomas Barnes, Photographer
Images: Jerusalem Cricket, Courtesy & Copyright 2013 Holly Strand
Audio: Courtesy & Copyright Friend Weller, Utah Public Radio
Text: Jack Greene, USU Sustainability Program Volunteer, Bridgerland Audubon Society
Hershberger, Wil & Elliott, Lang, Songs of Insects, https://songsofinsects.com/
Montagne, Renee, Insect Sounds: Telling Crickets, Cicadas And Katydids Apart, NPR, September 8, 2015, https://www.npr.org/2015/09/08/438473580/insect-sounds-telling-crickets-cicadas-and-katydids-apart
Rankin, Richard, Bug Bytes, Reference Library of Digitized Insect Sounds – USDA ARS, https://www.ars.usda.gov/ARSUserFiles/3559/soundlibrary.html