SEM of the mouthparts of E. sipra A the anterior view of labrum and labium showing sensilla symmetrically located on each side of the labial groove or around the tip of the labium B one of the maxillary stylets (Mx) showing food canal (Fc) and salivary canal (Sc) C the enlarged view of the tip of maxillary stylets (Mx) which are pointed and incurred D cone-shaped labrum showing a smooth surface E mandibular stylet (Md), showing serrate ridge on the convex external surface and zigzag structure on inner edge F mandibular stylet (Md), showing the depression on the side of the mandibular stylet G dorsal view of first segment of labium showing a smooth surface H dorsal view of second segment of labium showing sensilla trichodea I (S.t.I) and sensilla trichodea II (S.t.II) I dorsal view of third segment of labium showing sensilla trichodea I (S.t.I), sensilla trichodea II (S.t.II), sensilla trichodea III (S.t.III) J tip of labium, showing sensilla basiconica I (S.b.I) and peg sensilla II (Pg.s.II) K anterior view of first segment of labium showing sensilla basiconica, II (S.b.II) and cuticular processes (C.p) L anterior view of second segment of labium showing sensilla trichodea I (S.t.I), sensilla trichodea II (S.t.II) and microtrichia (Mt.) M anterior view of third segment of labium showing sensilla trichodea II (S.t.II), sensilla chaetica (S.c.) and peg sensilla II (Pg.s.II).