A sticky situation: solifugids (Arachnida, Solifugae) use adhesive organs on their pedipalps for prey capture
- 230 Downloads
Solifugids (Arachnida, Solifugae) have unique evertable adhesive organs on the tips of their pedipalps, named ‘suctorial’ or ‘palpal’ organs. Previous studies have shown that these organs enable solifugids to climb smooth glass-like surfaces and have hypothesized that these structures facilitate prey capture. Here, we use high-speed videography to demonstrate that the suctorial organs of Eremochelis bilobatus are its primary means of capturing insect prey. We also present calculations of the adhesive pressure exerted by these suctorial organs during real prey capture events.
KeywordsSolifuge Adhesion Foraging Suctorial organ Palpal organ
Thanks to P.E. Cushing and J.O. Brookhart for identifying the solifugids, and to R.J. Schilder and S.K. Schwartz for supplying crickets. Figure 1 was kindly provided by Paula E. Cushing, who was supported by National Science Foundation grant DBI-0346378. Two reviewers greatly helped with their suggestions. R.H.W. was supported by Coordenação de Aperfeiçoamento de pessoal de Nível Superior (CAPES).
- Beccaloni J (2009) Arachnids. University of California Press, Berkeley, CAGoogle Scholar
- Gruber J (1970) Die “Nemastoma”—Arten Nordamerikas (Ischyropsalididae, Opiliones, Arachnida). Ann Naturhist Mus Wien 74:129–144Google Scholar
- Gruber J (1974) Bemerkungen zur Morphologie und systematischen Stellung von Caddo, Acropsopilio un verwandter Formen (Opiliones, Arachnida). Ann Naturhist Mus Wien 78:237–259Google Scholar
- Lee J, Majidi C, Schubert B, Fearing R (2008) Sliding induced adhesion of stiff polymer microfiber arrays: 1. Macroscale behaviour. J R Soc Interface. doi: 10.1098/rsif.2007.1308
- Punzo F (1997) Dispersion, temporal patterns of activity, and the phenology of feeding and mating behaviour in Eremobates palpisetulosus Fitcher (Solifugae, Eremobatidae). Bull Br Arachnol Soc 10:303–307Google Scholar
- Punzo F (1998) The biology of camel spiders (Arachnida, Solifugae). Kluwer, Boston, MAGoogle Scholar
- Rovner JS (1980) Morphological and ethological adaptations for prey capture in wolf spiders (Araneae, Lycosidae). J Arachnol 8:201–215Google Scholar
- Savory TH (1964) Arachnida. Academic, LondonGoogle Scholar
- Schubert B, Lee J, Majidi C, Fearing R (2008) Sliding induced adhesion of stiff polymer microfiber arrays: 2. Microscale behaviour. J R Soc Interface. doi: 10.1098/rsif.2007.1309