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ACKNOWLEDGMENTS

The present work was funded with the financial support of the European Commission, to whom we are extrememly grateful.

We are equally grateful to all the people, institutions and organizations which have, in whatever capacity, offered their support.  A special mention should be made to the authorities and technicians of the Secretary of Agriculture for the Satae of Mato Grosso and DFMAARA-MT, for their constant collaboration; to EMPAER-MT; SEPLAN-MT; the Military House, Civil Defense and Public Arquive of the State of Mata Grosso, as well as the Ninth Meteorlological District, in Cuiabá; to the Superintendeny of IBAMA of the state of Mato Grosso; FUNAI-MT, inTangará da Serra; to the City Councils of Comodoro and Barra do Garças; to INCRA-MT, to Embrapa-CENARGEN and to INPE.

A special thanks should also be directed to FAPESP, for their monetary support and travel-aid for studies in museums and European institutions.

Numerous associations, cooperatives and private businesses concerned with the grasshopper problem in Mato Grosso contributed significantly to the project - especially in terms of logistical aid.  Thus, the most sincerest of thanks to ALCOMAT, COPRODIA and North ITAMARATI  for their given contributions and for the interest they always expressed in the researching of this project.

Thanks still to TV Globe, which supplied copies of numerous news articles focusing on the acridian problem in Mato Grosso, allowing for a better understanding of those events occurring in the recent past.

In a more general manner, the authors are also thankful to the local authorities in Mato Grosso state and the many municipalities visited; to the agricultural producers, societies, farmers, agriculturalists, and researchers... who supplied precious aid in the long-term development of this research, especially in the area of field work.

It is not possible to thank everyone personally, but we hope that those cited here understand indeed how greatful we are and know that their contacts, aid, collaborations and exchange of ideas allowed us to realize our efforts.  Without such aid, the project could not have developed nearly as quickly, nor could it have achieved such concrete results and practical applications.

Finally, a very special thanks to all the employees and colleagues of Embrapa NMA, Embrapa-SCI, and of CIRAD - GERDAT - PRIFAS who, directly or indifectly, aided in this project's execution.