Muniappan, R. 2001 Scale insects on vetiver in Guam.. Vetiver Newsletter No. 23: 16 pp.

Notes: The scale insects Aclerda takahashii and Aulacaspis madiunensis were observed, for the first time, in Guam and in Vetiveria zizanioides plants. Among the 2 scale insects, Aclerda takahashii seems to cause more damage to V. zizanioides than Aulacaspis madiunensis. Their morphologies and geographical distribution are discussed.