Natural History Insects (and Flowers) of Chalk Grassland at Aston Rowant 19 July 2021 Ian Alexander 6-Spot Burnet Moth side view with proboscis nectaring on Marjoram, antennae iridescent blue. Extremely flighty on a really hot day! 6-Spot Burnet Moth on Marjoram, Red on Iridescent Green (like the related Forester Moth, which flies here earlier in the year) 6-Spot Burnet Moth on Marjoram, same insect, looking Red on Black. The brilliant conspicuous coloration is evidently aposematic, more or less honestly warning that the insects are toxic, containing cyanogenic glucosides. A recent article finds, however, that the most toxic burnet moths are not more aposematic, i.e. there is no quantitative relationship. (But wouldn’t the less toxic moths evolve to look like the most toxic ones, as it’s safer…) Moulting Grasshopper Hoverfly on St John’s Wort A magnificently large Parasitic Wasp on Hogweed Soldier Beetle on Hogweed Pyrausta nigrata: a beautiful chocolate-brown Micro Moth of downland with a wavy wing bar, among the wild Thyme (that’s how small it is) Common Blue butterfly on Self-Heal Marbled White on Scabious Dark Green Fritillary (with quaking-grass above). Not only rare, but very flighty! I was happy to get this long shot through the grass. There were also Small Whites, Meadow Browns, Gatekeepers, Small Skippers, and possibly Chalkhill Blues about. A magnificently short, gnarly Beech getting a good toe-hold on the Chalk Well this probably is a Chiltern Gentian, the flowers are large, and showier than the Autumn Gentian; pinker than the camera has made it look, too