Euthrix potatoria
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Euthrix potatoria, the drinker, is an orange-brown moth of the family Lasiocampidae.[1]
The species' common and scientific names derive from the larva's supposed drinking of drops of dew.[2]
Name
The scientific name Euthryx potatoria was given to this moth by Carl Linnaeus in 1758. In choosing the name potatoria 'drinker-like', he was inspired by the Dutch entomologist Johannes Goedaert, who had called the animal dronckaerdt 'drunkard' "because it is very much inclined to drinking".[3] This remark refers to the moth's habit of repeatedly plunging its head into the water.[4] The English name drinker (moth) also refers to Goedaert's analogy.
Subspecies
Subspecies include:[1]
- Euthrix potatoria mikado Bryk
- Euthrix potatoria potatoria (Linnaeus, 1758)
Distribution and habitat
This species can be found in Europe.[5] The species is fairly common in the southern half of Britain.Script error: No such module "Unsubst". In Scotland, it is common in the west but not in the east of the country.[6] It is most frequently found in marshy places, fens and riversides but may also be seen in drier, grassy terrain.[7][2]
Description
Imago
The imago has a wingspan of Template:Cvt. The yellowish females are slightly larger than the orange-brown male but both sexes usually show the two distinctive white spots on the forewing.[2] Females have slightly serrated antennae, while male have deeply combed antennae.[8]
Larvae and pupae
The fully grown larva is about Template:Cvt long, hairy, striped and spotted, with distinctive tufts fore and aft. Larvae hibernate while young and resume feeding in the spring, pupating in a cocoon during the summer.[7]
Biology
This nocturnal moth flies from June to August depending on the location. Males especially are attracted to light.[7][2] The females lay their eggs in small clusters, mainly on the stem of grasses or reeds.[8] The larvae feed on various grasses and reeds (Alopecurus, Deschampsia, Dactylis, Elymus (syn. Elytrigia), Carex, Luzula and other Gramineae).[9]
Gallery
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Drinker moth caterpillar eating grass.
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Caterpillar
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Caterpillar (ventral)
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Mounted specimen. Male
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Female
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References
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