The internal sac membrane and spines of Pyrrhalta maculicollis. 6, 7 the sample was cut laterally, opened, dehydrated, and dried at the critical point 8 the sample dried at room temperature. The surfaces of the spines is slightly shrunken in comparison to that depicted in 7. Abbreviations: mp, membranous projections; s, spines; each is highlighted with blue and pink, respectively.

  Part of: Matsumura Y, Suenaga H, Kamimura Y, Gorb SN (2017) Traumatic mating by hand saw-like spines on the internal sac in Pyrrhalta maculicollis (Coleoptera, Chrysomelidae, Galerucinae). In: Chaboo CS, Schmitt M (Eds) Research on Chrysomelidae 7. ZooKeys 720: 77-89.