Barrows, W.M. (1925). Modification and development of the arachnid palpal claw, with especial reference to spiders. Annals of the Entomological Society of America 18: 483–516.
| Taxon | |
|---|---|
| Ricinoides crassipalpe (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | 487, fig. 9, Cryptostemma crassipalpe |