Chalk Hill Blue
Polyommatus coridon
Checklist Number
61.020 [B&F: 1575]
Classification
| Family: | Lycaenidae |
| Subfamily: | Polyommatinae |
| Genus: | Polyommatus |
| Species: | coridon |
| Authority: | (Poda, 1761) |
Introduction
At some sites many hundreds may be seen in August, flying just above the vegetation, searching for females. Large numbers of males may also congregate on animal dung and other sources of moisture and minerals. Females are much less conspicuous, being duller in colour, more secretive in their habits, and spending less time than the males in flight. The butterfly is confined to calcareous grassland in southern England and has declined in some areas during recent decades.
Records Summary
|
#Records |
#Individuals |
Earliest Record |
Latest Record |
| All Records | 25,475 | 659,306 | 17/06/1990 | 31/10/2011 |
|---|
| 2023 | 1,019 | 15,155 | 29/6/2023 | 29/9/2023 |
|---|
Records Detail (2023)
|
Site |
Date |
Quantity |
| Earliest | Brading Down LNR 2 transect: Section 4 | 29/6/2023 | 1 |
| Latest | Mottistone Down transect: Section 4 | 29/9/2023 | 1 |
| Max Count | Compton Farm | 15/7/2023 | 999 |
Records Distribution (2023)
Records / Recorders by Year (1970-2023)
Records by Week (2023)
