Arnold Pagenstecher

Arnold Andreas Friedrich Pagenstecher (25 December 1837, Dillenburg – 11 June 1913, Wiesbaden) was a German doctor and entomologist.

Trained as a physician, he studied medicine at the universities of Würzburg, Berlin and Utrecht.

He then worked as an assistant for his cousin, Alexander Pagenstecher (1828–1879), at the latter's ophthalmology clinic in Wiesbaden.

[1] He is known for his extensive studies of Lepidoptera species native to the Maritime Southeast Asia.

In the treatise, Die geographische Verbreitung der Schmetterlinge, he dealt with the underlying causes involving the geographical distribution of Lepidoptera.