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Geometridae

1935 Mottled Umber, Erannis defoliaria (Clerck, 1759)

Status and ecology:

A resident species sometimes common at mv light amongst deciduous woodland and occasionally very common at Kingspark Wood and in the Abbott's Wood complex, but usually occurring singly or sparingly in other habitats, especially along parts of the coast; larvae are also occasionally abundant in West Sussex. Widespread, but very local and distinctly episodic in high numbers, and in decline. This species is single-brooded occurring mainly from mid October to the third week of January, sometimes from late September. However adults have been seen in every week from the second week of September to mid February. Larvae feed on hazel, oak, (silver) birch, unspecified fruit trees (presumably including pear and plum), beech, sallow, (sweet) chestnut, sloe and apple. (Pratt, 2011)

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Woods Mill SWT Reserve, 24 xi 2016 Photo: Bob Foreman

Erannis defoliaria (Clerck, 1759)

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Distribution map for Erannis defoliaria

(Distribution at 1km scale)

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Historic records: pre 1980 |  1980 - 1989 |  1990 - 1999 |  2000 - 2009 |  2010 on |  All

Phenology chart for Erannis defoliaria

Phenology: Adult | Larva

Forms or subspecies:  |   | All records

Historic records: pre 1980 |  1980 - 1989 |  1990 - 1999 |  2000 - 2009 |  2010 on |  All

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