ANNALS 



OF 



The Entomological Society of America 



Volume 1 SEPTEMBER, 1908 Number 3 



A MONOGRAPHIC CATALC^QE OF THE MYMARID GENUS 



ALAPTUS HALIDAY, WITH DESCRIPTIONS OF THREE 



NEW NORTH AMERICAN FORMS AND OF ALAPTUS 



ICERYAE RILEY FROM TYPE MATERIAL. 



By a. ArsiJne Girault, 

 Office State Entomologist, Urbana, 111. 



INTRODUCTION. 



This paper is a catalogue monographic in nature, pureh' 

 from the fact that as the species of the genus are listed, the ori- 

 ginal descriptions are quoted; it is not a monograph, as the types 

 of most of the species have been inaccessible. Neither is the 

 history of the genus touched upon to any extent on account of 

 the lack of literature. Simply as a matter of convenience, the 

 original descriptions of the species are given with the descriptions 

 of the three new species here included, so that the descriptions 

 of all the species of the genus are brought together. A pre- 

 liminary bibliography of the species is also given, but it may be 

 stated that the literature of the group is most fragmentary. 



The forms in this genus are so minute and delicate, and their 

 preservation so difficult, that it is not surprising that the types 

 have in the main been lost, or no attempt made to keep them. 

 The similarity of the various species in structure and color 

 makes this most unfortunate, especially as most of the original 

 descriptions are very inadequate. I have found that antennal 

 structures afford the best specific characters, and these have in 

 the main, received no attention from former systematic workers 

 in this group. Some of the descriptions mean nothing at all. 

 and on this account, it is a question whether the species described 

 can be again recognized. 



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