In this paper, an incorrect version of table 2 was included and the cross-hatching in figure 1 was unclear. To correct these errors, we have included a new version of table 2 below. The legend for figure 1 should be ‘Incidence of parthenogenesis in the families of insects from (a) North America and (b) Italy, with partly filled bars on the left indicating species overall and empty bars on the right indicating pests’.
- Received October 14, 2010.
- Accepted October 18, 2010.
- This Journal is © 2010 The Royal Society