''Imma mackwoodi'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family

Immidae Immoidea is a superfamily of pantropical moths containing only the family Immidae comprising ten genera with around 250 species, over half of them in the genus ''Imma''. Many are brightly coloured and diurnal. The position of this group is curr ...

. It was described by

Frederic Moore Frederic Moore FZS (13 May 1830 – 10 May 1907) was a British entomologist and illustrator. He produced six volumes of ''Lepidoptera Indica'' and a catalogue of the birds in the collection of the East India Company. It has been said that Mo ...

in 1887. It is found in

Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...

. The forewings are ochreous-yellow with an interrupted basal, and a very broad irregular shaped medial pale violet-brown band, beyond which is a contiguous incurved submarginal series of almost confluent longitudinal streaks followed by a marginal series. The medial band is wavy on its inner edge and broadly bilobed across the disc on its outer edge, its area being marked with a yellow streak at end of the cell and an outer series of spots curving from the costa. The hindwings are pale violet-brown.''The Lepidoptera of Ceylon''. 3 (4): 520.
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References

Moths described in 1887 Immidae Moths of Asia {{Immidae-stub