Possible Sound Organs in Sphingid Pupæ

IN recently characterising the pupa of Sphinx catalpæ, Boisd., for my report as entomologist to the Department of Agriculture, I was struck with the occurrence on the anterior border of each of the larger movable abdominal joints (viz., abdominal joints 5, 6, and 7) of a peculiar elongate concavity, a structure not mentioned by Westwood, Burmeister, Kirby… CONTINUE READING