''Ilma'' is a genus of skippers in the family

Hesperiidae Skippers are a group of butterflies placed in the family Hesperiidae within the order Lepidoptera (moths and butterflies). They were previously placed in a separate superfamily, Hesperioidea, but have since been placed in the superfamily Papilion ...

. It is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

, being represented by the single species, ''Ilma irvina''.

References

Natural History Museum Lepidoptera genus database
Hesperiinae Hesperiidae genera Monotypic butterfly genera Taxa named by Charles Swinhoe Taxa described in 1905 {{Hesperiinae-stub