Lesser Swallow Prominent
Pheosia gnoma

B&F Code
71.018

Authority

Fabricius, 1777

Family
Notodontidae

Subfamily
Notodontinae

Genus
Pheosia

National Status
Common

Species account (old)

In Robson's time '. . . a much rarer species . . . than the next [Pheosia tremula]' [...] P. Robson found it in Teesdale in 1927, E. Smith found its larvae on birch at Muggleswick in 1930 and J. R. Johnson and J. W. H. Harrison had it at Gibside in 1934. [...] Perhaps the most frequent of the Prominents at light' and certainly this holds good today. B. and I. D. Wallace and Sheppard & Eyre found it in most of the sites they worked [...] notably where there are well-established stands of birch. The moth is recorded from practically every part of Durham, from the limestone denes to the upper dales, with the exception of the coastline. [...].

Dunn, T.C. and J.D. Parrack, The Moths and Butterflies of Northumberland and Durham (NNU: 1986, 1992). Reprinted gratefully with permission.

Statistics

Records	1076
Individuals	1637
Largest Sample	36
First Recorded	1845
Last Recorded	2023
Earliest Adult Record	19/04
Latest Adult Record	14/09
Monad Coverage	4.8%
Hexad Coverage	71.4%

Map

This map shows all records of Lesser Swallow Prominent - Pheosia gnoma 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 Lesser Swallow Prominent - Pheosia gnoma 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 Lesser Swallow Prominent - Pheosia gnoma 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 Lesser Swallow Prominent - Pheosia gnoma 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 Lesser Swallow Prominent - Pheosia gnoma 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.