THE WING VENATION OF THE FULGORID^. 



Z. p. Metcalf. 



The present paper is a continuation of my work on the 

 homologies of the wing veins of Homopterous insects, a paper 

 having previously been published on the wing venation of the 

 Jassidee.* 



The present paper is based upon a study of the wing pads 

 of eleven genera of Fulgoridae. These eleven genera are dis- 

 tributed among seven of the eleven commonly recognized 

 sub-families of Fulgoridae. Two of the sub-families not repre- 

 sented in this study are not found in our territory and I have 

 not been able to secure representatives of the two remaining 

 sub-families, Achilida and Fulgorida. The venation of these 

 two sub-families presents no special difficulties when viewed 

 in the light of our knowledge of other Fulgoridae which have 

 been carefully studied. 



The same technique has been used in preparing the material 

 for studying the wing venation of the Fulgoridae that was 

 used for studying the Jassidas. The nymphal wings being 

 removed as carefully as possible were mounted in water. The 

 wing pad was then either drawn with the aid of a camera 

 lucida or a photomicrograph made. Afterward a pen and ink 

 drawing was made from the photomicrograph uniform with the 

 camera lucida drawings. The drawings of the adult wings 

 were made from balsam mounts with the aid of the Edinger 

 drawing apparatus.' The magnifications used in both cases 

 varied greatly being adapted as far as possible to the needs 

 of individual cases. 



The relation of the main tracheae of the wing pads to the 

 body tracheae is an interesting one and one upon which much 

 stress has been laid in the past. The relationships of the main 

 trachea of the wing pads can be much better understood if 

 they can be traced back to their origin from the main body 

 tracheae. 



Unfortunately, however, the wing pads of most insects 

 are. so placed that the body tracheae lie very deep. This makes 

 it practically impossible to secure . the body tracheae by the 



*Annals of the Entomological Society of America, Vol. VI, No. 1. 



341 



