
Image:
Army.mil
Description:
The adult Field Cricket is only about two
or three centimeters in length. It is mostly
black with brown markings on the thorax
and wings. It has long, well developed legs
for jumping. Crickets can jump 20 to 30
times the length of the their body. If a
human could do this, he or she would be
able to jump about 150 feet in a single
bound! Females are told from males by the
presence of the ovipositor located at the
end of the abdomen.
Range:
The Field Cricket is widespread and can
be found throughout much of the world.
Habitat:
Field Crickets are generally found in pastures
and meadows, but are also found in homes.
Field Crickets are voracius eaters and may
cause significant damage to crops. In home,
they can damage clothing and food.
Reproduction:
Crickets reach reproductive maturity between
eight and twelve weeks after birth. Males
attract mates by rubbing their wings together
to produce a noise sometimes referred to
as "chirping". "Chirping"
usually occurs at night. Technically, this
process is called stirdulation. Interestingly
enough, the rate in which a cricket "chirps"
is determined by the temperature outside.
When it is warmer, crickets chirp faster.
Below is an equation used to tell the temperature
from the "chirps" of a cricket:
Temperature=
50+(Number of chirps per minute-40)/4
(temperature equals fifty plus number of
calls in one minute minus 40 divided by
four)
After the male mates with the female, the
female will lay between 150 and 400 eggs
in the ground or another soft surface. The
eggs hatch in about two weeks. The Field
Cricket will progress through 8-10 instars
(periods of time between moltings) in its
lifetime.
Life
Cycle:
Incomplete Metamorphosis: egg -> nymph
-> adult
Diet:
Field Crickets will eat just about anything
including soft plant matter, insects, young
crickets, and decomposing matter.