Right lateral (A, E, I, M) and ventral (B, F, J, N) view, micropyle (C, G, K, O) and ultrastructural details of plastron (D, H, L, P) of eggs in Gasterophilus species A–D G. flavipes (Olivier) E–H G. haemorrhoidalis (Linnaeus) I–L G. inermis (Brauer) M–P G. intestinalis. Abbreviations: api, apical; dor, dorsal; ven, ventral. Scale bars: 100 μm (A, B, I–J, M, –N), 50 μm (in box of B), 100 μm (in box of I); 20 μm (C); 5 μm (D); 250 μm (E, F), 20 μm (in box of F); 50 μm (G, O); 25 μm (H); 10 μm (K, L, P).