Chilo species are of special interest, and I’d be happy to field requests like this in future, especially if they are accompanied by ethanol specimens so I can both sequence them and get good genitalia preparations. The odd angle that the valves are displayed at in these pics threw me off track for a while (the ends of the valves appear bifid) but I have been placed back on target by European colleagues that I forwarded the images to. They reckon it is Chilo tumidicostalis (Hampson, 1919). I am not convinced they are correct – it would take a fresh dissection with the valves flattened to get a standardized image for comparison with slide mounted preps. Or DNA sequence data, which I am amassing for Chilo species.