Common Emerald
Hemithea aestivaria
Species account (old)
Robson could mention only a single record of this species, which was from Darlington by Backhouse in the 1850's. In his opinion this was only a stray. A very fresh, apparently newly emerged specimen appeared in the Chester-le-Street trap on 22nd July 1985. This could have been another stray but its fresh appearance indicated that it was probably from a local pupa. It remains to be seen whether further specimens are seen during the next year or two to confirm the presence of a breeding colony. The caterpillars will have no difficulty in finding food for they will accept a variety of shrubs and trees such as hawthorn, blackthorn, birch, oak and sallow.
Statistics
| Records | 115 |
|---|---|
| Individuals | 175 |
| Largest Sample | 10 |
| First Recorded | 1902 |
| Last Recorded | 2023 |
| Earliest Adult Record | 14/06 |
| Latest Adult Record | 10/08 |
| Monad Coverage | 1.3% |
| Hexad Coverage | 31.0% |
Map
This map shows all records of Common Emerald - Hemithea aestivaria in the Durham (VC66) database per monad (1km grid square). The map can be explored further by zooming and panning, can be reset using the button on the left, and can be filtered by selecting the era. Click on a monad to view a full list of species recorded in it, or its containing hexad (10km grid square).
Map (image)
The distribution of Common Emerald - Hemithea aestivaria is additionally shown in the image below. This is to allow for backwards compatibility with older browsers that cannot load the map above.
Week graph
This graph shows the County Durham (VC66) records of Common Emerald - Hemithea aestivaria per 7-day period, differentiated by life stage. Hover over/tap the graph to see an exact count of records at that point in time. Hover over/hold the life stage legend to highlight a particular life stage; click on a life stage label to remove it from the graph. The graph can be filtered further by selecting the era.
The graphs below show the total records and individuals of Common Emerald - Hemithea aestivaria in County Durham (VC66) per time period. Hover over/tap the graph to see an exact number of records and individuals at a particular point in time. Hover over/hold a label to highlight a particular metric; click on a metric label to remove it from the graph.
Era graph
Year graph
Gallery
This gallery shows images of Common Emerald - Hemithea aestivaria taken by County Durham (VC66) recorders. Clicking on a photo opens it in a large lightbox with a full caption, and the arrow buttons move between photos. If you would like to contribute any photographs, particularly of any stages not captured here, please email admin@durhammoths.org.
Foodplants
This is a list of foodplants known to be used by the larval stages of Common Emerald - Hemithea aestivaria in the UK.
Habitats
This is a list of habitats that Common Emerald - Hemithea aestivaria is known to occur in within the UK.