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|The sounds of crickets courting and flies flying
familiar to many of us, but have you heard a rice weevil larva eating
inside a wheat kernel, a termite cutting a piece of wood, or a grub
chewing on a root? Modern insect detection and control technology
makes use of these subtle signals, sampled below.
of the sound files in this library were selected from noise-free
sections of recorded signal, but you can hear some typical background
noises mixed with insect sounds at I
below. The insect sounds have higher frequencies and shorter
durations that make them relatively easy to separate from background
(see discussion in ). Several different
methods have been developed to identify sounds of particular insect
species, and at least one author ( ) has tested a
method against multiple signals below.
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This page contains links to sound ( or .wav) files, and accompanying information
files as well as links to pictures or other information about each
species in the Encyclopedia of Life or Featured Creatures .
Some of the sounds are low in intensity, and it may be necessary
to turn up the speaker volume to hear them. Also, many sound
players like to deemphasize low frequencies. If your player has
an equalizer and you can't hear the sounds, turn up the frequencies
between 600 and 1500 Hz.
If the sound does not play well over the internet, you can right
click on the file, and then click Save
Target As to download the file to your desktop or
elsewhere on your computer, where it may play better.
Below: Cornelius Dunmore and
digital signal analysis of stored product insect pest sounds.
Stored product and household pest insect movement and feeding sounds
Movement and feeding sounds of soil invertebrates
Defensive stridulation by soil insects (dung beetles)
Movement and feeding sounds of insects in wood. Termite
Movement and feeding sounds of insects in plants
Buzzing of fruit flies, butterflies, moths, and mosquitoes, stink bug,
and Rhopalid communication
Fire ants, phorid flies, and their interactions
Cricket, katydid, and cicada sounds, including
underground sounds of immature crickets
Examples to distinguish insect sounds from background noise
sounds: Iowa State Entomology Index
A. Stored Product Insect movement and feeding
sounds recorded for insect detection and monitoring studies
(the sound quality
differences that you hear are caused by differences in the spectral
ranges of the sensors).
interpunctella larvae in dry dog food [1147 kb, 30 s] recorded with
Bruel and Kjaer accelerometer.
B. Movement and feeding sounds of soil
Individual Plodia interpunctella larva in dry dog food [489 kB,
10 s] recorded with piezoelectric disk sensor.
A.3. Sitophilus oryzae larvae (17-18 d
old) in wheat kernels [489 kB, 10 s] recorded with PVDF film sensor.
A.4. Sitophilus oryzae larvae (16-17 d
old) in wheat kernels [489 kB, 10 s] recorded with Bruel and Kjaer
oryzae larvae (16-17 d old) in wheat kernels [489 kB, 10 s]
recorded with 40 kHz ultrasonic sensor.
oryzae larvae (17-18 d old) in wheat kernels [977 kB, 10 s]
recorded with 30 kHz ultrasonic sensor.
oryzae larvae (16-17 d old) in wheat kernels [977 kB, 10 s]
recorded with piezoelectric disk sensor.
A.8. Blattella germanica (German
cockroach adult male [692 kB, 35 s] scurrying in a small arena,
recorded with small microphone.
larvae recorded in Aruba with AED-2000 by Nathan
(3 larvae in a Phoenix
palm frond) [937 kB 10 s].
For #'s B.1-3 see also: Web
Page by Phil Stansly, Biology of
B.1. Diaprepes abbreviatus larvae feeding
on citrus stock in a 1-gallon pot [1,465 kB, 30 s]
B.2. Diaprepes abbreviatus larvae feeding
on orange tree roots in a grove [641 kB, 12.8 s] (see [2209 kB] )
under different orange tree in same grove [489 kB,
[Note: Originally B.3 was
thought also to be Diaprepes, but analysis of the sound pattern
and spectra led us to reclassify the sound as an above-ground insect
feeding in the tree canopy.]
B.4a. Phyllophaga (white grubs)
recorded by Jamee Brandhorst-Hubbard
w/ soil microphone [449 kB, 9 s]. (see . .
B.4b.Phyllophaga (white grubs)
recorded by Minling Zhang w/ soil microphone
containing examples of a repeated pulse (near start of file),
followed by several rustles,
and a loud snap at end [831 kB, 17 s]. (See Zhang et al.
B.4.d. Two simultaneous recordings by Minling Zhang of
of (6) sound pulses recorded
from microphones inserted into soil near a white grub
series begins at ca. 8.8 s after the beginning of each recording
and lasts for 1.5 s.
Other sounds also are present in the recordings. [769 kB, 16 s].
in Zhang et al. (2003)
magnolialis Capps recorded in soil under magnolia tree.
Polyphylla spp. ( Possibly P. barbata). Unverified
recordings in habitat of rare June beetle,
(Assisted by Gary Leibee) For more information about Magnolia root borer
, see Leibee G. L. 1992.
Unearthing the magnolia menace. American Nurseryman, January
1992, pp. 70-74 [489 kB, 9.8 s].
recorded by John Rodgers near Santa
Cruz, CA, using an AED-2000
insect detection system.
vicinus Mole cricket
vicinus Mole cricket scraping sounds
recorded by Everett Foreman w/
accelerometer [489 kB, 9.8 s].
See Tom Walker's Web Site for
above-ground sounds made by adults and reference information about mole
B.9. Lumbricidae spp. (earthworms) recorded in
soil from a forage grass field
using an accelerometer [489 kB 9.8 s].
Rhynchophorus ferrugineus (red palm weevil) and R. cruentatus (palmetto weevil)
sulcatus (black vine weevil) larvae in 1-gal. pot with yew tree,
with accelerometer [489 kB, 10 s].
More BVW sounds recorded with
accelerometer in nursery containers with different host plants [6
segments, each 489 kB, 9.8 s].
albohirtum larvae (greyback
grubs) feeding on sugarcane in a
field near Mackay, Australia, recorded with an
accelerometer (assistance from Peter Samson) [1492 kB, 17 s].
parvulus larvae (Childers grubs) feeding on sugarcane in a field
near Bundaberg, Australia, recorded with an
accelerometer (assistance from Keith Chandler) [828 kB, 9 s]
B.14. Lumbricidae spp. (earthworms) recorded in
soil from a forage grass field
using an accelerometer [489 kB 9.8
B.15. Gastropoda spp.
(snails) recorded with an accelerometer in a container with a grape