Figure 4

Ultrathin section of the digestive cells of the midgut diverticula of M. menardi at the end of overwintering in March; (a) male; (b–d) female. DV, digestive vacuole; GA, Golgi apparatus; L, lipid droplet; M, mitochondrium; MV, microvilli; N, nucleus. Scale bars: (a) 1 µm; (b,c) 2 µm; (d) 500 nm.