Fig. 6 in Hoverflies (Diptera: Syrphidae) of El Ventorrillo Biological Station, Madrid province, Spain: a perspective from a late twentieth century inventory

Fig. 6. Hoverfly species from Sierra de Guadarrama. (A) Milesia crabroniformis, female, Puerto de Navacerrada. (B) Sericomyia hispanica, female, Puerto de Navacerrada. (C) Chrysotoxum sp. near vernale, male, Puerto de la Morcuera. (D) Dasysyrphus albostriatus, female. Photos A, B, D by Piluca Álvarez-Fidalgo, C by Marián Álvarez-Fidalgo.