Camberwell Beauty (Nymphalis antiopa)
Brown ArgusAricia agestis (Denis & Schiffermüller, 1775)Polyommatus agestisBrown Argus
Brown Argus (Aricia agestis) on the Siegdamm near Bonn-Geislar
Photograph:
Ingo DanielsIngo Daniels; Bonn, 
GermanyBonn, GermanyGermany (5. September 2021, 05:34 PM)
Brown ArgusAricia agestis (Denis & Schiffermüller, 1775)Polyommatus agestisBrown Argus
Brown Argus (Aricia agestis) on the Siegdamm near Bonn-Geislar
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (5. September 2021, 06:23 PM)
Brown HairtreakThecla betulae (Linnaeus, 1758)Brown Hairtreak
Brown Hairtreak (Thecla betulae) in Bonn-Kessenich
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (22. August 2009, 02:16 PM)
Brown HairtreakThecla betulae (Linnaeus, 1758)Brown Hairtreak
Brown Hairtreak (Thecla betulae) in Bonn-Kessenich
[Female]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (17. August 2013, 10:16 AM)
Brown HairtreakThecla betulae (Linnaeus, 1758)Brown Hairtreak
Egg of a Brown Hairtreak (Thecla betulae) on a Blackthorns (Prunus spinosa) branch in Bonn-Kessenich
I only saw a Brown Hairtreak (Thecla betulae) in our garden in the Bonn city area twice in a period of 18 years. Because there were no food plants for the caterpillar in the garden or in the neighbourhood, I decided to plant a Blackthorn (Prunus spinosa). After this had reached a height of around 2.50 metres in 2023, I searched the branches for the conspicuous white eggs of the Brown Hairtreak's (Thecla betulae) the following winter. After a short search, I was surprised to find them! Two of the tiny eggs were found on the Blackthorn (Prunus spinosa) at a height of about 1.60 metres. In 2025 I found two more eggs on the same branch as the year before.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (23. February 2025, 09:26 AM)
Common BluePolyommatus icarus (Rottemburg, 1775)Common Blue ButterflyCommon Blue
Common Blue (Polyommatus icarus) at the old Ennert sports ground in Bonn
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (18. July 2017, 09:26 AM)
Common BluePolyommatus icarus (Rottemburg, 1775)Common Blue ButterflyCommon Blue
Common Blue (Polyommatus icarus) in Bonn-Pützchen
[Female]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (29. July 2019, 11:26 AM)
Common BluePolyommatus icarus (Rottemburg, 1775)Common Blue ButterflyCommon Blue
Common Blue (Polyommatus icarus) in Bonn-Röttgen
[Female]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (22. July 2020, 09:57 AM)
Common BluePolyommatus icarus (Rottemburg, 1775)Common Blue ButterflyCommon Blue
Two mating Common Blues (Polyommatus icarus) on the Rodderberg
These two Common Blues (Polyommatus icarus) are mating right on the footpath at the highest point of the Rodderberg. There were several such pairs there that day.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (19. June 2021, 11:33 AM)
Common BluePolyommatus icarus (Rottemburg, 1775)Common Blue ButterflyCommon Blue
Egg of a Common Blue (Polyommatus icarus) on the Rodderberg
If I hadn't observed and photographed the female Common Blue (Polyommatus icarus) laying her eggs, I would never have found the egg. It can be seen in the centre of the picture as a flat greenish cylinder.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (28. July 2021, 04:31 PM)
Common BluePolyommatus icarus (Rottemburg, 1775)Common Blue ButterflyCommon Blue
Common Blue (Polyommatus icarus) in Bonn-Oberkassel
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (11. August 2021, 12:44 PM)
Cyaniris semiargusCyaniris semiargus (Rottemburg, 1775)Polyommatus semiargusCyaniris semiargus
Rotklee-Bläuling (Cyaniris semiargus) in Bonn-Röttgen
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (9. June 2021, 04:52 PM)
Cyaniris semiargusCyaniris semiargus (Rottemburg, 1775)Polyommatus semiargusCyaniris semiargus
Rotklee-Bläuling (Cyaniris semiargus) in Bonn-Röttgen
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (9. June 2021, 04:52 PM)
Cyaniris semiargusCyaniris semiargus (Rottemburg, 1775)Polyommatus semiargusCyaniris semiargus
Rotklee-Bläuling (Cyaniris semiargus) in Bonn-Röttgen
[Female]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (16. June 2021, 06:46 PM)
Cyaniris semiargusCyaniris semiargus (Rottemburg, 1775)Polyommatus semiargusCyaniris semiargus
Rotklee-Bläuling (Cyaniris semiargus) in Bonn-Röttgen
[Female]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (16. June 2021, 06:49 PM)
Dusky Large BluePhengaris nausithous (Bergsträsser, 1779)Maculinea nausithousGlaucopsyche nausithousDusky Large Blue
Dusky Large Blue (Phengaris nausithous) in Bonn
[Male]
For species conservation reasons, the exact location cannot be given.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (18. July 2017, 10:11 AM)
Dusky Large BluePhengaris nausithous (Bergsträsser, 1779)Maculinea nausithousGlaucopsyche nausithousDusky Large Blue
Dusky Large Blue (Phengaris nausithous) in Bonn
For species conservation reasons, the exact location cannot be given.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (26. July 2020, 02:39 PM)
Holly BlueCelastrina argiolus (Linnaeus, 1758)Holly Blue
Holly Blue (Celastrina argiolus) in Bonn-Kessenich
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (10. June 2013, 03:00 PM)
Holly BlueCelastrina argiolus (Linnaeus, 1758)Holly Blue
Holly Blue (Celastrina argiolus) in Bonn-Oberkassel
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (10. June 2018, 11:52 AM)
Holly BlueCelastrina argiolus (Linnaeus, 1758)Holly Blue
Holly Blue (Celastrina argiolus) between Bonn-Auerberg and Hersel
[Female]
Strictly speaking, the Holly Blue (Celastrina argiolus) was photographed a few metres outside the city limits of Bonn in the Rhein-Sieg district between Bonn-Auerberg and Bornheim-Hersel.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (11. July 2021, 12:07 PM)
Purple HairstreakFavonius quercus (Linnaeus, 1758)Neozephyrus quercusPurple Hairstreak
Purple Hairstreak (Favonius quercus) in the Kottenforst
After work, I went for an evening bike ride through the Kottenforst forest, where I came across a few Purple Hairstreaks (Favonius quercus). It had already been very hot for a few days.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (7. August 2018, 06:33 PM)
Purple HairstreakFavonius quercus (Linnaeus, 1758)Neozephyrus quercusPurple Hairstreak
Purple Hairstreak (Favonius quercus) in the Kottenforst
[Female]
I had researched the behaviour of the Purple Hairstreak (Favonius quercus) in the literature and read that the butterflies only descend from the treetops on hot days and then only in the mornings and evenings. I cycled to a section of the Bonn Kottenforst forest with lots of oak trees. I didn't have to wait long before the first Purple Hairstreak (Favonius quercus) was spotted along the path.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (22. July 2020, 10:42 AM)
Purple HairstreakFavonius quercus (Linnaeus, 1758)Neozephyrus quercusPurple Hairstreak
Purple Hairstreak (Favonius quercus) in the Kottenforst
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (8. August 2020, 07:27 PM)
Purple HairstreakFavonius quercus (Linnaeus, 1758)Neozephyrus quercusPurple Hairstreak
Purple Hairstreak (Favonius quercus) in the Kottenforst
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (8. August 2020, 07:00 PM)
Purple HairstreakFavonius quercus (Linnaeus, 1758)Neozephyrus quercusPurple Hairstreak
Egg of a Purple Hairstreak (Favonius quercus) at a Oak (Quercus) in the Kottenforst
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (29. January 2023, 03:21 PM)
Purple HairstreakFavonius quercus (Linnaeus, 1758)Neozephyrus quercusPurple Hairstreak
Caterpillar of a Purple Hairstreak (Favonius quercus) on a Nettle Family (Urticaceae) (!) in the Kottenforst
I found the caterpillar of a Purple Hairstreak (Favonius quercus) on a Nettle Family (Urticaceae) standing under a Oak (Quercus). The caterpillar had probably fallen down.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (21. May 2023, 06:31 PM)
Short-Tailed BlueCupido argiades (Pallas, 1771)Everes argiadesTailed CupidShort-Tailed Blue
Short-Tailed Blue (Cupido argiades) near the Wattendorfer Mühle
[Female]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (12. August 2018, 11:56 AM)
Short-Tailed BlueCupido argiades (Pallas, 1771)Everes argiadesTailed CupidShort-Tailed Blue
Short-Tailed Blue (Cupido argiades) on a legume in Bonn-Röttgen
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (30. June 2020, 05:44 PM)
Short-Tailed BlueCupido argiades (Pallas, 1771)Everes argiadesTailed CupidShort-Tailed Blue
Short-Tailed Blue (Cupido argiades) on the Rhine between Bonn-Auerberg and Hersel
[Female]
Strictly speaking, the photo of the Cupido argiades (Cupido argiades) was taken a few metres outside the city limits of Bonn in the Rhein-Sieg district. Between Bonn-Auerberg and Bornheim-Hersel, close to the Rhine, there are several hectares of natural pale areas with an unusually large variety of plant and animal species.
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (11. July 2021, 12:46 PM)
Short-Tailed BlueCupido argiades (Pallas, 1771)Everes argiadesTailed CupidShort-Tailed Blue
A male Short-Tailed Blue (Cupido argiades) sunbathing on a small natural meadow in Bonn-Röttgen
[Male]
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (26. August 2023, 03:18 PM)
Small CopperLycaena phlaeas (Linnaeus, 1761)American CopperCommon CopperSmall Copper
Small Copper (Lycaena phlaeas) in Bonn-Pützchen
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (18. July 2017, 10:20 AM)
Small CopperLycaena phlaeas (Linnaeus, 1761)American CopperCommon CopperSmall Copper
Small Copper (Lycaena phlaeas) on the Siegdamm near Bonn-Geislar
Photograph:
Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (3. July 2021, 10:45 AM)