The
Orange Migrant was probably introduced to
Sri Lanka accidentally with
Senna surattensis plants imported from
Thailand, Singapore or
Malaysia for roadside planting in the early 1990s. It was first recorded in
Sri Lanka in 2008. Since then, it has become widely distributed across both urban and rural areas, and is particularly common in and around
Colombo. Its only known larval host plant in
Sri Lanka is
Senna surattensis.
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