Bug FAQRed-lined Looper
Crypsiphona ocultaria · Order: Lepidoptera · Family: Geometridae
Source: Wikipedia
Adults have a wingspan of about 4 to 5 centimeters. The moth shows red markings on the underside of its wings, while the caterpillars are bluish-green with a pale side line.
Source: Wikipedia
How to recognize it
The name “red-lined” refers to red markings visible on the undersides of the adult wings. Caterpillars are bluish-green with an off-white line along their sides.
Source: Wikipedia
Size
The adult’s wingspan ranges from 4 to 5 cm.
Source: Wikipedia
Where it lives
It is among the most common moth species found in Australia.
Source: Wikipedia
What it eats
Larvae feed on the leaves of eucalypt trees.
Source: Wikipedia
More photos
Questions people ask
What do the adult moths look like?
They have red markings on the underside of their wings.
Source: Wikipedia
What do the caterpillars look like?
Caterpillars are bluish-green with an off-white line along their sides.
Source: Wikipedia
Same family (Geometridae)
Willow BeautyPeribatodes rhomboidaria
Pale BeautyCampaea perlataDamages trees, gardens or crops
Large Lace-border MothScopula limboundataDamages trees, gardens or crops
Riband WaveIdaea aversata
Yellow Shell MothCamptogramma bilineata
Large Maple Spanworm MothProchoerodes lineolaDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Crypsiphona_ocultaria
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.