BioAcoustica is a free, open repository of wildlife sound recordings from the Natural History Museum, London.
Taxonomic index of the BioAcoustica collection
Acoustic and biological measurements in the BioAcoustica collection
Recording annotations from ann-o-mate
The specimens that recordings are of, from the collections
Møhl, Bertel; Miller, Lee A. (1976). Ultrasonic clicks produced by the peacock butterfly: a possible bat-repellent mechanism. Journal of Experimental Biology, 64: 639–644.
Torpid peacock butterflies (Inachis io) produce intense ultrasonic clicks that startle captive vespertilionid bats (Plecotus auritus and Pipistrellus pipistrellus). The clicks occur as the wings are opened and are generated by a stiff portion of wing membrane between the costal and subcostal veins near the base of the forewing. The power spectrum of a click matches the most sensitive area of a bat's audiogram. Clicks may serve as acoustic equivalents of the attack-retarding eyespot display in the same species.
| Inachis io |
Where the specimens that recordings are of were collected, not where the sound was recorded