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Erannis defoliaria (Clerck, 1759)

Mottled Umber
70.2560 (B&F: 1935)


»Suborder: Glossata
  »Superfamily: Geometroidea
    »Family: Geometridae
      »Subfamily: Ennominae
        »Tribe: Bistonini

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)

Erannis defoliaria (Clerck, 1759)
Woods Mill SWT Reserve, 24 xi 2016
Photo: Bob Foreman
Erannis defoliaria (Clerck, 1759)
Arun Valley, 07 i 2017
Photo: Dave and Pen Green
Erannis defoliaria (Clerck, 1759)
Woods Mill, 23 xi 2017
Photo: Bob Foreman
Erannis defoliaria (Clerck, 1759)
Lewes, 04 xi 2018
Photo: Peter Tinning
Erannis defoliaria (Clerck, 1759)
Lindfield, 23 xii 2018
Photo: Bob Foreman
Erannis defoliaria (Clerck, 1759)
Arlington, 25 v 2015
Photo: Keith Alexander
Erannis defoliaria (Clerck, 1759)
Arlington, 14 v 2015
Photo: Keith Alexander
Erannis defoliaria (Clerck, 1759)
Arlington, 14 v 2015
Photo: Keith Alexander
Erannis defoliaria (Clerck, 1759)
Arlington, 10 vi 2015
Photo: Keith Alexander
Erannis defoliaria (Clerck, 1759)
female - ex. larva
Bexhill-on-Sea, 07 i 2016
Photo: Keith Alexander
Erannis defoliaria (Clerck, 1759)
female - ex. larva
Bexhill-on-Sea, 07 i 2016
Photo: Keith Alexander
Erannis defoliaria (Clerck, 1759)
Lindfield, 12 xii 2010
Photo: Bob Foreman
Erannis defoliaria (Clerck, 1759)
Bracklesham2, 26 x 2015
Photo: Derek Lee
Erannis defoliaria (Clerck, 1759)
Bracklesham1, 26 x 2015
Photo: Derek Lee
Erannis defoliaria (Clerck, 1759)
Bracklesham, 26 x 2015
Photo: Derek Lee

Distribution at 1km scale

Phenology (adult)

Phenology (larval)

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