Castor Semi-looper
Common NameCastor Semi-looper
Scientific NameAchaea janata
FamilyErebidae
SubfamilyErebinae
Wingspan (mm)60
Wing Patterncryptic
Primary Colorslight brown, grey, dark brown
HabitatTropical and subtropical forests, agricultural areas, gardens, plantations
Geographic RangeWidespread across the Indo-Australian tropics, parts of Africa, and Asia
Host PlantsRicinus communis, Ficus, Rosa, Citrus, Manihot esculenta
Flight PeriodYear-round in tropical climates, multiple generations
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesEggs are laid on host plant leaves. Larvae are semi-loopers, meaning they have fewer prolegs and move with a characteristic looping motion. Pupation occurs in a cocoon in leaf litter or soil. Multiple generations can occur annually in warm climates.
Identification TipsThe forewing pattern of wavy brown lines and a distinct submarginal band is characteristic. Crucially, the hindwings (often hidden at rest) are black with a broad white median band and a white submarginal spot, which is a key diagnostic feature when visible.
Description
A medium-sized moth with mottled light brown and grey forewings, characterized by intricate wavy dark brown lines and a prominent submarginal band. The body is robust and covered in light brown scales.
