Journal of Insect Behavior

, Volume 15, Issue 4, pp 563–570 | Cite as

Asymmetry of Leg Use During Prey Handling in the Spider Scytodes globula (Scytodidae)

  • César AdesEmail author
  • Eduardo Novaes Ramires


In spitting spiders Scytodes globula collected in the field, anterior leg loss was more frequent on the left than on the right side, possibly as an outcome of predatory episodes. A laboratory study was performed in which intact adult females of S. globula were placed with individuals from three species of recluse spiders, Loxosceles intermedia, L. gaucho, and L. laeta. The frequency of probing touches by spitting spiders to their prey was significantly higher with left leg I than with right leg I. Left leg II and right leg II also differed in touching frequency, but in a less marked way. The results, which may represent the first evidence of behavioral laterality in a spider species, suggest that behavioral asymmetry may be an ancient evolutionary trait.

laterality spiders predatory behavior spitting spider Scytodes globula 


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Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  1. 1.Departmento de Psicologia Experimental, Instituto de PsicologiaUniversidade de São PauloSão PauloBrazil
  2. 2.Ciências BiológicasUniversidade Tuiuti do ParanáCuritiba, PRBrazil

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