Flight period: June to July (occasional individuals in May and very early August)
The Norfolk Hawker is one of two brown hawker dragonflies found in Britain. It has clear untinted wings, green eyes and a yellow triangular mark on the second abdominal segment.
Problems with the scientific name: This species has had a variety of names and its ‘well formed name’ in 2016 is Anaciaeschna isoceles. The spelling of genus Anaciaeschna (with ‘sch’) is correct even though it is inconsistent with the spelling of genus Aeshna (with ‘sh’) to which this species was formerly assigned. The spelling of specific epithet isoceles is correct even though the yellow triangular mark for which it is named is mathematically an isosceles triangle. Unfortunately, some of our materials here may not yet have been updated to match the latest taxonomic changes and still show a previous or incorrect name.