| MOTH | Lepidopteran that uses moonlight and Earth's magnetic field to navigate by means of positive phototaxis and its internal compass (4) |
| CHART | Map to navigate by |
| HELIOS | God of Light o'er all the Earth - and Earth's bounds (6) |
| SONAR | Bats navigate by it |
| BAT | Mammal that navigates by echolocation |
| TERRELLA | Meaning "little earth" and thought to be an invention of William Gilbert, a globe-shaped magnet designed to simulate Earth's magnetic fields (8) |
| NEEDLE | Any one of various sharps with which to administer IV therapy, align with Earth's magnetic field, darn, embroider, etch, knit, phlebotomise, play a record, puncture acupoints, suture, tattoo or vaccin |
| FLUXGATE | Direction indicator of the earth's magnetic field |
| ISOCLINIC | Referring to lines on a map joining places where the dip in the earth's magnetic field is the same (9) |
| COMPASS | Earth's magnetic field, essentially, for pigeons |
| LGBT | Film genre that includes "Moonlight" and "Call Me by Your Name" |
| BRIMSTONE | Old name for the element sulphur, whose yellow colour matches that of the wings of the male lepidopteran in the genus Gonepteryx rhamni, the original "butter-coloured fly" (9) |
| BUTTERFLY | Holometabolous lepidopteran whose metamorphosis from caterpillar and chrysalis into Adonis blue, Camberwell beauty, painted lady etc is metaphorical for positive change, rebirth, renewal and transform |
| SONATAS | 'Moonlight' and 'Appassionata' are two of these by Beethoven |
| ALLEN | Oscar-winning director of Magic in the Moonlight and Cafe Society, Woody ___ (5) |
| LEG | In cricket, the side of the field to the left of and behind a right-handed batsman as he faces the b |
| FLAP | First of field to pass back-runner and cause some panic (4) |
| BUDDLEIA | Flowering shrub known as the butterfly bush because of its attractiveness to tortoiseshells, red admirals, peacocks, painted ladies and other lepidopterans (8) |
| BUTTERFLIES | Lepidopterans such as Chalk Hill Blues, Clouded Yellows and Painted Ladies, whose name is thought to derive from an old belief that such insects stole churned cream (11) |
| UNICORNMOTH | A lepidopteran whose caterpillar has a spine on the lip of its shell (7,4) |
