Species Recorded | Taxon | Scientific Name | Common Name | Records | Latest |
| moth or butterfly - micro moth | Yponomeuta | a small ermine moth (unidentified) | 394 | 2023 |
| moth or butterfly - micro moth | Yponomeuta cagnagella | Spindle Ermine | 209 | 2023 |
| moth or butterfly - micro moth | Yponomeuta evonymella | Bird-cherry Ermine | 589 | 2023 |
| moth or butterfly - micro moth | Yponomeuta malinellus | Apple Ermine | 251 | 2023 |
| moth or butterfly - micro moth | Yponomeuta padella | Orchard Ermine | 249 | 2023 |
| moth or butterfly - micro moth | Yponomeuta plumbella | a micro-moth | 76 | 2022 |
| moth or butterfly - micro moth | Yponomeuta rorrella | Willow Ermine | 39 | 2022 |
| moth or butterfly - micro moth | Yponomeuta sedella | a micro-moth | 6 | 2022 |
| moth or butterfly - micro moth | Ypsolopha | a Ypsolopha species (unidentified) | 1 | 2011 |
| moth or butterfly - micro moth | Ypsolopha dentella | Honeysuckle Moth | 220 | 2023 |
| moth or butterfly - micro moth | Ypsolopha horridella | a micro-moth | 1 | 2012 |
| moth or butterfly - micro moth | Ypsolopha mucronella | a micro-moth | 20 | 2023 |
| moth or butterfly - micro moth | Ypsolopha nemorella | a micro-moth | 11 | 2014 |
| moth or butterfly - micro moth | Ypsolopha parenthesella | White-shouldered Smudge | 50 | 2022 |
| moth or butterfly - micro moth | Ypsolopha scabrella | Wainscot Smudge | 161 | 2023 |
| moth or butterfly - micro moth | Ypsolopha sequella | Pied Smudge | 75 | 2021 |
| moth or butterfly - micro moth | Ypsolopha sylvella | a micro-moth | 8 | 2015 |
| moth or butterfly - micro moth | Ypsolopha ustella | a micro-moth | 20 | 2021 |
| moth or butterfly - micro moth | Ypsolopha vittella | a micro-moth | 3 | 2006 |
| plant | Yucca | a Yucca species (unidentified) | 2 | 2018 |
| plant | Yucca gloriosa | Spanish Dagger | 7 | 2023 |
| plant | Yucca recurvifolia | Curved-leaved Spanish-dagger | 3 | 1998 |
| plant | Yushania anceps | a Plant | 2 | 2016 |