Snodgrass, R.E. (1948). The feeding organs of Arachnida, including mites and ticks. Smithsonian Miscellaneous Collections 110(10): 1–93.
| Taxon | |
|---|---|
| Ricinoides sjostedtii (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | n/a, fig. 10e (as Ricinoides sjöstedtii), Ricinoides sjostedtii (Hansen and Sørensen) |
| Ricinoides westermannii (Guérin-Méneville, 1838) (Ricinulei: Ricinoididae) | n/a, fig. 10b (as Ricinoides westermanni), Ricinoides westermannii (Guérin-Méneville) |
| Ricinoides crassipalpe (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | n/a, figs 10a, c, Ricinoides crassipalpe (Hansen and Sørensen) |
| Ricinoides karschii (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | n/a, fig. 10d, Ricinoides karschii (Hansen and Sørensen) |