Koa Seedworm
Common NameKoa Seedworm
Scientific NameMacarostola argenterella
FamilyGracillariidae
SubfamilyGracillariinae
Wingspan (mm)8
Wing Patterncryptic
Primary Colorsbrown, reddish-brown, silver
HabitatKoa forests and woodlands
Geographic RangeHawaiian Islands
Host PlantsAcacia koa
Flight PeriodYear-round (multiple generations)
Flight Stylefluttering
Lifecycle NotesThe larvae are seed borers, developing within the seeds or pods of Koa trees. They undergo complete metamorphosis, pupating within the host plant material.
Identification TipsKey identification features include its small size, the mottled reddish-brown and silvery wing pattern, and its exclusive association with Koa trees in the Hawaiian Islands. The pointed head and long antennae are also characteristic.
Description
A small, slender moth with mottled reddish-brown and silvery-white forewings, giving it a cryptic appearance. It possesses relatively long antennae and a somewhat pointed head.
