Father Chrysanthus
| Chrysanthus | |
|---|---|
| Chrysanthus holding a spider | |
| Born | Wilhelmus Egbertus Antonius Janssen 1 September 1905 Mill, North Brabant, The Netherlands | 
| Died | 4 May 1972 (aged 66) Oosterhout, North Brabant, The Netherlands | 
Wilhelmus Egbertus Antonius Janssen (1 September 1905 – 4 May 1972), better known as Father Chrysanthus OFMCap, was a Dutch priest and biology teacher. He was known for his studies in arachnology. Initially he was concerned with the spiders of the Netherlands but he became a specialist on New Guinea spiders. Two spider species were named in his honor following his death.