Acknowledgements
We wish to thank Renato Ripa (Instituto de Investigaciones
Agropecuarias, Chile), Ariel Camousseight (National History Museum of
Science from Santiago, Chile), James Austin (BASF, Research Triangle
Park, NC, USA), Uwe Noldt (Germany) and Guillaume Baudouin (Paris City
Hall, France) for giving us samples. This work was supported by
USDA-NRICGP grants to ELV (00-35302-9377 and 2002-35352-12490), the
Urban Entomology Endowment at Texas A&M University and CNRS grants and
contracts to AGB.