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Hertfordshire & Middlesex Branch
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Hertfordshire & Middlesex's Butterflies

Butterfly Conservation is dedicated to conserving both butterflies and moths.

For information about the status of moths in Hertfordshire and Middlesex. . . .
Hertfordshire Moth Group
Website Moth pages

35 species of butterfly occur most years in Hertfordshire and 32 in Middlesex, together with the occasional migrant or vagrant. The following table summarises their status in the two counties:

Species Name Scientific Name UK BAP* Status Hertfordshire Status Middlesex Status
Dingy Skipper Erynnis tages Priority species Rare local resident Absent
Grizzled Skipper Pyrgus malvae Priority species Rare local resident. Hertfordshire BAP species Absent
Essex Skipper Thymelicus lineola Not listed Widespread and common resident but local concern Widespread and common resident but local concern
Small Skipper Thymelicus sylvestris Not listed Widespread and common resident but local concern Widespread and common resident but local concern
Silver-spotted Skipper Hesperia comma Priority species Absent - last record 1959 (individual seen in a Tring garden 2016) Absent
Large Skipper Ochlodes sylvanus Not listed Widespread and abundant species Widespread and abundant species
Wood White Leptidea sinapis
Priority species Absent - last record 1976 Absent
Orange-tip Anthocharis cardamines Not listed Widespread and abundant species Widespread and abundant species
Large White Pieris brassicae Not listed Widespread and abundant species Widespread and abundant species
Small White Pieris rapae Not listed Widespread and abundant species Widespread and abundant species
Green-veined White Pieris napi Not listed Widespread and abundant species Widespread and abundant species
Clouded Yellow Colias croceus Not listed Less common migrant Less common migrant
Brimstone Gonepteryx rhamni Not listed Widespread and abundant species Widespread and abundant species
Wall Lasiommata megera Priority species (research only) Believed to be now extinct Believed to be now extinct
Speckled Wood Pararge aegeria Not listed Widespread and abundant species Widespread and abundant species
Small Heath Coenonympha pamphilus Priority species (research only) Widespread and abundant resident but local concern Local resident (not recorded in central London)
Ringlet Aphantopus hyperantus Not listed Widespread and abundant species Widespread and common resident and range increasing towards central London
Meadow Brown Maniola jurtina Not listed Widespread and abundant species Widespread and abundant species
Gatekeeper Pyronia tithonus Not listed Widespread and abundant species Widespread and abundant species
Marbled White Melanargia galathea Not listed
Widespread and abundant species
Local resident but range increasing towards central London. London species of conservation concern
Silver-washed Fritillary Argynnis paphia Not listed Local woodland resident Local and rare. London species of conservation concern
Dark Green Fritillary Argynnis aglaja Not listed Present along the Chiltern ridge Very occasional reports. London BAP species
White Admiral Limenitis camilla Priority species
Local woodland resident Rare local woodland resident. London BAP species
Purple Emperor Apatura iris Not listed
Elusive local woodland resident. Hertfordshire BAP species Elusive local woodland resident. London BAP species
Red Admiral Vanessa atalanta Not listed Widespread and abundant species / migrant species Widespread and abundant species / migrant species
Painted Lady Vanessa cardui Not listed Variable migrant Variable migrant
Peacock Aglais io Not listed Widespread and abundant species Widespread and abundant species
Small Tortoiseshell Aglais urticae Not listed Widespread and abundant species and occasional migrant Widespread and abundant species and occasional migrant
Camberwell Beauty Nymphalis antiopa Not listed Exceptionally rare migrant Exceptionally rare migrant
Comma Polygonia c-album Not listed Widespread and abundant species Widespread and abundant species
Duke of Burgundy Hamaeris lucina Priority species Absent - although a confirmed record in 2009 Absent
Small Copper Lycaena phlaeas Not listed Widespread and abundant resident but local concern Widespread and abundant resident but local concern
Brown Hairstreak Thecla betulae Priority species Several unconfirmed sightings Very rare but possibly expanding north - 2 known colonies (2018)
Purple Hairstreak Favonius quercus Not listed Widespread and abundant resident but under recorded Widespread and abundant resident but under recorded
Green Hairstreak Callophrys rubi Not listed Very rare local resident Very rare local resident increasing in range. London species of conservation concern
White-letter Hairstreak Satyrium w-album Priority species Under recorded and elusive resident Under recorded and elusive resident. London BAP
Long-tailed Blue Lampides boeticus Not listed. Recent colonist in the south of England. Some reports suggesting emergence from imported pea products. Occasional reports Occasional reports
Small Blue Cupido minimus Priority species Very rare local resident Unknown status, could be present? London BAP
Holly Blue Celastrina argiolus Not listed Widespread and abundant species Widespread and abundant species
Brown Argus Aricia agestis Not listed Widespread and abundant species Local resident. London species of conservation concern
Common Blue Polyommatus icarus Not listed Widespread and abundant species Widespread and abundant species
Adonis Blue Polyommatus bellargus Priority species Absent - last record 1959 Absent
Chalkhill Blue Polyommatus coridon Not listed Local resident, mainly only along the Chiltern ridge. Hertfordshire BAP species Occasional vagrant

*BAP = Biodiversity Action Plan.

Click here for more information about the National BAP

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