Taxa included

Chamberlin, J.C. (1943). The taxonomy of the false scorpion genus Synsphyronus with remarks of the sporadic loss of stability in generally constant morphological characters (Arachnida: Chelonethida). Annals of the Entomological Society of America 36: 486–500.

Taxon
Synsphyronus Chamberlin, 1930 (Pseudoscorpiones: Garypidae) 488–489, Synsphyronus
Synsphyronus Chamberlin, 1930 (Pseudoscorpiones: Garypidae) 488–489, Synsphyronus Chamberlin
Maorigarypus Chamberlin, 1930 (Pseudoscorpiones: Garypidae) 488–489, Synsphyronus Chamberlin
Synsphyronus paradoxus Chamberlin, 1930 (Pseudoscorpiones: Garypidae) 490–492, figs 2, 24, 29–30, Synsphyronus (Synsphyronus) paradoxus Chamberlin
Synsphyronus mimulus Chamberlin, 1943 (Pseudoscorpiones: Garypidae) 492, (in part), Synsphyronus (Synsphyronus) mimetus
Synsphyronus mimetus Chamberlin, 1943 (Pseudoscorpiones: Garypidae) 492–496, figs 3, 6, 8, 10–12, 15, 18, 20, 22, 25, 27, Synsphyronus (Synsphyronus) mimetus
Synsphyronus mimulus Chamberlin, 1943 (Pseudoscorpiones: Garypidae) 496–498, figs 1, 4, 5, 7, 13–14, 16–17, 23, 26, 28, Synsphyronus (Maorigarypus) mimulus
Synsphyronus melanochelatus (Chamberlin, 1930) (Pseudoscorpiones: Garypidae) 498, fig. 21, Synsphyronus (Maorigarypus) melanochelatus (Chamberlin)
Maorigarypus viridis Tubb, 1937 (Pseudoscorpiones: Garypidae) 498–499, Synsphyronus (Maorigarypus) viridis (Tubb)
Idiogarypus Chamberlin, 1943 (Pseudoscorpiones: Garypidae) 499, (synonymised by J.C.H. Morris, 1948a: 37), Idiogarypus
Synsphyronus hansenii (With, 1908) (Pseudoscorpiones: Garypidae) 500, Idiogarypus hansenii (With)