THE 



Ohio Journal of Science 



PUBLISHED BY THE 



Ohio Statk University Scientific Society 

 Volume XVI MARCH, 1916 No. 5 



TABLE OF CONTENTS 



CoGAN — Contribution Towards Our Knowledge of the Homoptera of South 



Africa 161 



HOMOPTEROUS STUDIES. PART I. 



Contribution Towards Our Knowledge of the Homoptera 



of South Africa. 



Eric S. Cogan, M. A. 



introduction. 



The systematic treatment of the Auchenorrhynchous Hom- 

 optera of South Africa has received but Httle attention from 

 entomologists and naturaHsts, with the result that the worker 

 or investigator finds himself confronted with what may be 

 termed a pioneer task. Of all the orders of insects in South 

 Africa, the Hemiptera and particularly the suborder Homoptera 

 have been studied the least. The list of described species, at 

 all events for the Auchenorrhynchous Homoptera, would 

 scarcely number more than one hundred. The Cicadidae 

 and Fulgoridae are perhaps the best known, yet our knowledge 

 of these two large families is far from complete. The Mem- 

 bracid^ have received but passing comment, while the Cerco- 

 pidas and Jassoidea are scarcely known at all. 



Through the courtesy of Professor Osborn of the Ohio State 

 University, the writer was afforded an opportunity to study 

 a series of Cercopids and Jassids, which had been consigned to 

 him for study by Mr. Mally, of the Department of Agriculture 

 in the Cape Province. Except in a few cases where the speci- 

 mens had faded a little, the collection was in a good state of 



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