|Carthaea saturnioides larva|
The Dryandra Moth (Carthaea saturnioides) is a species of moth. It is considered the only species in the family Carthaeidae. Its closest relatives are the Saturniidae and it bears a resemblance to many species of that family, bearing prominent eye spots on all wings.
As the common name suggests, the larva feeds on Dryandra and related shrubs such as Banksia and Grevillea. The species is restricted to the south-west of Western Australia, where the Dryandra shrubs grow.
Each wing presents a large eye spot. The eye spots on the hind-wings are distinct, whereas the eye spots on the forewings are smaller and often duller. These eye spots are visible on both sides of the wing. The apex and outer margin of the forewing are darker than the basal region. The wing venation is similar to that of the Saturniidae. The wingspan ranges from 80 to 100 mm.
The larva of this species is grey on the dorsal side, and yellow on the ventral side. Along the prolegs there is a line of clear markings, as well as markings in the form of an eye, following the line of spiracles.
The larvae are active during the day, while the adults fly only at night.
When disturbed, these moths tend to lower the head and abdomen, bringing the forewings forward to expose the large spots on the hind wings, which oscillate from side to side, giving the aggressor the impression that it is being watched by two large eyes (such as an owl), in an attempt to cause the aggressor to refrain from attacking.
Adults fly from October to December.
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