ENTOMOLOGICAL NEWS 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



Vol. XVII. 



FEBRUARY, 1906. 



No. 2. 



CONTENTS: 



Daecke— On the Eye-Coloration of the 

 Genus Chrysops 



Wickham— The Races of C i c i n d e 1 a 

 tranquebarica Hbst 



Coquillett— A New Tabanus Related to 

 punetifer 



Howard— Prof. Berlese's Apparatus for 

 Collecting Small Arthropods Rap- 

 idly and in Great Quantities 



De la Torre Bueno— On Some Aquatic 

 Hemiptera from Costa Rica, Cen- 

 tral America 54 



39 



4,; 



49 



Smith— Some Notes on the Bee Genus 



Caupolicana 57 



Troop — A New Aphid 59 



Brues— A New Subapterous Encyrtid. . 61 

 Kellogg— A Gigantic New Biting Bird- 

 Louse. 62 



Wellman— Observations on the Biono- 

 mics of Auchmeromyia luteola Fab. 64 



Editorial 68 



Notes and News •. 69 



Doings of Societies 70 



On the Eye-Coloration of the Genus Chrysops. 

 By E. Daecke. 



(Plate 1.) 



Little has been recorded on the eye-maculation of Chry- 

 sops, yet every student of this interesting genus, when in 

 doubt of where to place a specimen will examine the eyes in 

 order to obtain additional information to separate it from its 

 allied forms. 



Baron Osten-Sacken, in his Prodrome, Part i, page 369, has 

 briefly referred to this character. 



The fact that the design disappears as soon as the insect is 

 dried makes it inconvenient for study, and to relax the speci- 

 men, which will bring the image back again to some extent, is 

 done at the risk of ruining it. This, combined with the fact 

 that the design-variation in some species is so great as to run 

 into and correspond with that of other species, likely has 

 caused students to carefully avoid writing on this subject. 



The vast design-variation in the species renders a synoptic 



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