@article {304, title = {Syrphidae recorded in a heterogenous forest ecosystem at the "Finca de Artikutza" (Navarre, Northern Spain)(Diptera)}, journal = {Fragmenta entomologica}, volume = {36}, number = {2}, year = {2004}, pages = {253-274}, author = {Kehlmaier, Christian and Martinez de Murgu{\'{\i}a, Leticia} }