Measurement of movement of the two weevils, Cylas formicarius and Euscepes postfasciatus using a photoelectric switch: A preliminary test

<Author> Seiichi MORIYA
<Year> 1994
<Journal> Proc. Assoc. Pl. Prot. Kyushu
<Volume> 40
<Issue>
<Pages> 111-112
<Notes> Japanese

Two species of important sweetpotato pest weevils, Cylas formicarius and Euscepes postfasciatus, were confined individually in a small plastic box to monitor automatically their walking as an indicator of their movement for 24 hrs by a photoelectric switch attached to the box. No significant difference was detected between the sexes of E. postfasciatus in the level of movement. On the other hand, results of the measurement showed that males of C. formicarius moved about much more actively than females.