List of extinct arachnids

This article contains a list of extinct species from the class Arachnida, with the year and location that they were last recorded.

Scientific name	Common name	Year last seen	Last known location
Centrobunus braueri	N/A	1894	Mahé, Seychelles^[1]
Dicrogonatus gardineri	N/A	1909	Mahé, Seychelles^[2]
Halarachne americana	Caribbean monk seal nasal mite	1952	Caribbean Sea
Hirstienus nanus	N/A	1908	Mahé, Seychelles^[3]
Metazalmoxis ferruginea	N/A	1892	Mahé, Seychelles^[4]
Peromona erinacea	N/A	1892	Mahé, Seychelles^[5]
Pleorotus braueri	N/A	1894	Mahé, Seychelles^[6]
Sitalcicus gardineri	N/A	1908	Mahé, Seychelles^[7]
Stipax triangulifer	N/A	1894	Mahé, Seychelles^[8]
Thomasettia seychellana	N/A	1908	Mahé, Seychelles and Silhouette Island^[9]
Diplaegidia gladiator	Passenger pigeon mite	1914	North America^[10]^[11]

Extinct in the wild