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Female. This butterfly is easily mistaken for a Dark Green Fritillary (A. aglaja). They can easily be distinguished by their undersides but I do not have a pic of the underside of this specimen. From the upperside A. adippe and A. Niobe have a white margin while A. Aglaja has a dark margin (https://www.projectnoah.org/spottings/10...). A. adipe differs from A. niobe in the upperside in the last two lunules (submarginal spots 5 and 6) that do not have the arrow shape of the other lunules, see picture, unlike A. niobe (https://www.projectnoah.org/spottings/17...). It prefers sandy or rocky hills. The adults fly in July/August and lay eggs near to violets, their feeding plants.
Open oak forest. Reserva de la Biosfera del Real Sitio de San Ildefonso-El Espinar.
Camera Model: NIKON D500. Exposure Time: 1/640 sec.; f/11; ISO Speed Rating: 635. Exposure Bias: 0 EV. Focal Length: 300.0 mm. No flash fired. DSC_4442
Spotted on Jun 23, 2019
Submitted on Oct 18, 2019