THE MYRMECOPHILOUS ORGANS OF ARHOPALA-MADYTUS FRUHSTORFER (LEPIDOPTERA, LYCAENIDAE)

The myrmecophilous organs of the larva and pupa of A. madytus are desc ribed and compared to some other lycaenid species. In keeping with oth er myrmecophiles, the larvae of A. madytus possess both a Newcomer's o rgan and tentacular organs. They also produce stridulations by rapid v ibration of abdominal segments rive and six. The pupae of A. madytus h ave a stridulatory organ which is typical of lycaenids, but also appea r to possess a functional Newcomer's organ and modified tentacular org ans. The importance of vibration as a previously ignored means of ant- lycaenid communication is emphasised.