Fig. 4

Fine structure of microspheres in eggmass. A The oviposition fluid covering tubuliform silk forms a solid platform. B Enlarged micrograph of the rectangular zone of Fig. 4A. This solid platform is completely closed rather than a microsphere layer. C Pyriform gland-derived glue (Py) adheres to microspheres. D The multilayer on the eggmass surface has various sphere diameter size. Arrowheads indicate the largest and smallest spheres. E The microspheres on the eggmass surface is predominantly aggregated (outlined range). F The monolayer attached to the inner egg mainly shows a ‘papila’ (arrows). Each scale bar indicates 20 µm (A), 10 µm (B-D) and 2 µm (E, F), respectively