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Sestra flexata

Fern looper
Sf L
Photo by Olivier Ball

Larvae feed on bracken and water fern.

Family
Geometridae
Biostatus
Endemic
Host Plant
Large ferns e.g. water fern.
Larva
A pair of specialised setae on the abdomen triggers a defensive response when touched (drops from the host vigorously twisting to hide in leaf litter).
Pupa
Pupates in silk cocoon among host fronds or in detritus.
Adult/Imago
Males have simple antennae. September to April. Flies at night, visiting flowers, attracted to light. Drops to ground to feign death when disturbed.
Forewing Length
15 - 17mm
Range
NZ
Habitat
Native forest.

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