66.010 (1640) The Drinker Euthrix potatoria (Linnaeus, 1758)

Status
Resident. Common.
 
Flight period
J F M A M J J A S O N D
























 
History
Lennon (1863) found it common everywhere without giving any records. W. Douglas Robinson (1870-71) had found one or two larvae during September on Almorness (VC73). R. S. Gordon (1913) caught a female on a rush stem after dark at Corsemalzie on 14th June 1897, but adds that it was locally common in the larval state but rarely seen as an imago. In a large series of moths he bred on the females showed considerable variation in ground colour, ranging from pale yellow to orange, and brown.
 
Many records are from the Rothamsted stations and elsewhere, with many larvae and a few pupae records. MOGBI (1992) records it widespread across the region. It is still widespread in the first decade of the 21st century.

Form pallida Tutt
Surprisingly, this yellowish form, was trapped on Barcloy Hill (VC73) on 15th July 2005.
 
Life cycle
One generation. Overwinters as a small larva during August to June. Pupation site is usually on a grass stem, or can be under a log, where the tapering cream-coloured cocoon is spun.
 
Larval foodplants
Larvae feed on a wide range of grasses, including reeds.
 
Identification
Unmistakeable.
 
Habitat
Most frequent in wetland and damp grassland.
 
Recorders' notes
Males (feathered antennae) distinguishable from larger, paler females and can be noted in records.
Male © Keith Naylor, Caerlaverock Castle, 3 August 2008
© Valerie Harrison, Three Lochs, 4 June 2011

Local distribution map

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Distribution map displays records from the National Biodiversity Network (See terms and conditions).

The following datasets are included:

  • Butterfly Conservation - Macro-moth provisional distribution for the British Isles (excluding the Republic of Ireland) from the National Moth Recording Scheme
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