The lesser wax moth, Achroia grisella (Fabricius) (Pyralidae: Galleriinae), uses an altrasonic communication system for mate calling The male produces a 100 kHz sound by striking its tegula with the forewing. This calling sound induces virgin females to orient toward males. Although the pheromone released from the male's wing glands may stimulate kinesis in females, it does not elicit orientation. Female moths are attracted toward synthetic 40 and 72 kHz sounds which simulate the pulse length and repetition rate of the male's calling signal.

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A number of relatively simple electronic devices, useful in the entomology laboratory, are described. These include power supplies, signal amplifiers using operational amplifiers, timing circuits, and filter circuits. This introduction to simple electronic techniques is designed to help entomologists and other biologists collect data efficiently, accurately, and correctly.'