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)/■ > 7 • INTRODUCTION 
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A catalogue of animals should serve practically all fields of biology. It 
should be, therefore, as complete a listing of all the records of families, sub¬ 
families, 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 histories of those species that are suspected of being injurious to 
plants. The plant disease specialist should be able to check the current 
nomenclature of the species which are disease vectors or suspected of being 
disease vectors. Those research workers studying morphology, physiology, 
or genetics should be able to trace the development in the field of their 
special interest. And lastly, the student of taxonomy should be relieved of 
the burden of searching for past recordings, and the journals which pub¬ 
lish taxonomic papers should not have to pay the cost of publishing the 
past records and duplicating the synonymy that is already well known. Thus 
it would be necessary only to record synonymy which has been developed 
since the 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 arranged under the genera 
in alphabetic sequence. 
The notes which follow the references are generally self-explanatory, but 
three points may be mentioned here. Such notations as “[described],” 
“[notes],” “[key],” and the like are intended to be suggestive rather than 
precise or exclusive. The notation “[error]” means not accepted in this 
catalogue. Usually the latest published synonymy is accepted, but not al¬ 
ways. The notation “[comparative note]” is used to designate those refer¬ 
ences, 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 
references full and complete and to give an indication of the character of 
the data contained. Where the writer knows that reprints have been issued 
with different pagination, this is indicated in parentheses following the page 
numbers of the original. In a few cases, where the matter has been reprinted 
under a different title with different pagination, separate references are 
given. Where authentic editions have been republished these have been 
indicated by separate references. Genera established without included 
species have been dated from their original description, with their type 
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