Hot water immersion to ensure quarantine security for Cryptophlebia spp. (Lepidoptera : Tortricidae) in lychee and longan exported from Hawaii

We determined whether immersion in 49 degreesC water for 20 min, a quaranti ne treatment developed for disinfestation of fruit flies in lychee, Litchi chinensis Sonn., and longan, Dimocarpus longan (Lourd.) Steud., exported fr om Hawaii, would also disinfest fruit of two species of Cryptophlebia. The pattern of tolerance to heat in Cryptophlebia illepida (Butter) was general ly eggs < neonates < early instars = late instars < pupae. No C. illepida s urvived immersion for 16 or 20 min. Late fourth and fifth instars were dete rmined to be the most tolerant stage that occurs in harvested fruit. Late i nstars of Cryptophlebia ombrodelta (Lower) were more tolerant of hot-water immersion than those of C illepida, but no C. ombrodelta late instars survi ved immersion for 16 or 20 min. The hot water immersion quarantine treatmen t for fruit flies should effectively disinfest lychees and longans of any C ryptophlebia.