Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Identity, release and establishment of Caloptilia nr. schinella (Walsingham) (Gracillariidae) on the island of Hawaii for control of Myrica faya Aiton (Myricaceae).

Abstract

A species of the genus Caloptilia near to C. schinella was released on Hawaii for the control of Myrica faya during 1991 and 1992. Adults were released using 3 methods: into a tent enclosing a tree and containing a source of sugar water; into sacks enclosing 1-6 branches with a supply of sugar water or lemon drops; or directly into the field. Surveys between November 1991 and September 1992 revealed only a few larval mines and all were attacked by unknown natural enemies. By November 1994, C. schinella had established at locations up to 3 km from release sites and in November 1995 insects were present and reproducing in the field, although their impact on M. faya appeared to be negligible.