SEM of the antennae of E. sipra A antenna, composed of three parts: scape (Sc), pedicel (Pe) and three regions of flagellum (Fl) B scape and pedicel, showing scale-like structures (Sc.s.), sensilla trichodea III (S.t.III), sensilla chaetica (S.c.), microtrichia (Mt.) C first region of flagellum, showing sensilla basiconica II (S.b.II) D junction between first and second regions of flagellum, showing change in surface protrusions and microtrichia (Mt.) E second region of the flagellum, showing spherical protrusions on the surface.