Figure 8. Volume of sperm (mean + SE) in females collected before mating, interrupted at the end of stage I before insemination, and after one complete copulation.

Numbers are sample size. The pictures show examples of the bursa copulatrix full of sperm before and after copulation (left and right) and partially emptied at the end of stage I (centre). Scale bar in the images 0.1 mm. Images edited to remove dust.