INTRODUCTION 



A catalogue of animals should serve practically all fields of biology. 

 It therefore should be as complete a listing of all the records of fami- 

 lies, subfamilies, tribes, genera, species, and varieties as it is possible 

 for the author to assemble. The nature of the reference is of the 

 greatest importance. A student of zoogeography should be able to 

 find a complete list of the regions inhabited by the various species. 

 The student of ecology should be able to find references to all that 

 is known about the life history, food plants, and other pertinent data. 

 The student of economic entomology should be able to check the his- 

 tories of those species that are suspected of being injurious to plants. 

 The plant disease specialist should be able to check the current nomen- 

 clature of the species that are disease vectors or are suspected of 

 being disease vectors. Those research workers studying morphology, 

 physiology, or genetics should be able to trace development in the 

 field of their special interest. And finally, the student of taxonomy 

 should be relieved of the burden of searching for past recordings, 

 and the journals which publish taxonomic papers should be relieved 

 of publishing past records and duplicating synonymy that is already 

 well known. Thus, it would be necessary to record only synonymy 

 that has been developed since publication of the catalogue. 



In this, as in other catalogues of the present series, the family is 

 divided into genera, which are arranged in as nearly a phylogenetic 

 order as our present knowledge will permit. The species are ar- 

 ranged under the genera in alphabetic sequence. 



The notes that follow the references are generally self-explanatory, 

 but three points may be mentioned here. Such notations as "[de- 

 scribed]," "[notes]," "[key]," and the like, are intended to be sug- 

 gestive rather than precise or exclusive. The notation "[error]" 

 means not accepted in this catalogue. Usually, the latest published 

 synonymy is accepted, but not always. The notation "[comparative 

 note]" is used to designate those references, often of the greatest 

 taxonomic significance, in which two generic, specific, or other groups 

 are compared. All references have been checked against the original 

 save those marked with an asterisk (*), which have been accepted 

 from reliable sources. Every effort has been made to have the refer- 

 ences full and complete, and to indicate the character of the data 

 contained. Where the writer knows that reprints have been issued 

 with different pagination, this pagination is given in parentheses 



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