Opisina

{{short description|Single-species genus of moths}}

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| parent_authority = Walker, 1864

| taxon = Opisina arenosella

| authority = Walker, 1864

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Opisina is a monotypic moth genus in the family Xyloryctidae described by Francis Walker in 1864. Its only species, Opisina arenosella, the coconut black-headed caterpillar, was described by the same author in the same year.{{cite web |url=http://insecta.pro/taxonomy/663165|title=Opisina|website=Insecta.pro}} It is found in India, Sri Lanka, Bangladesh and Myanmar.{{cite web |last=Savela |first=Markku |url=http://ftp.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/gelechioidea/xyloryctidae/opisina/ |title=Opisina Walker, 1864 |website=Lepidoptera and Some Other Life Forms |accessdate=February 7, 2018}}

The wingspan is {{cvt|10|–|15|mm}}. Adults are grey.

The larvae are gregarious and are serious pests of coconut trees. They defoliate their host plant.{{cite book | chapter-url=https://link.springer.com/chapter/10.1007%2F978-1-4615-1377-3_17 | doi=10.1007/978-1-4615-1377-3_17 | chapter=Biological Control of the Coconut Caterpillar Opisina Arenosella (Lepidoptera: Xylorictidae): Achievements and Prospects | title=Biocontrol Potential and its Exploitation in Sustainable Agriculture | date=2001 | last1=Nasser | first1=M. | last2=Abdurahiman | first2=U. C. | pages=285–305 | isbn=978-1-4613-5523-6 }}