72 



Dictyophorodelphax praedicta sp. nov. 

 (Homoptera, Delphacidae) 



BY JOHX COLBURX BKIDWELT.. 



Length 5.6-6.4 mm. ; length of prolongation of head in 

 front of eves 2.5-2,8 ; length of teginen 1.3-1.6. 



Very much like D. mirahUls Swezey hnt darker. The pro- 

 longation of the head is shorter, only al)ont the length of the 

 hody and the apical depressed portion is mncli shorter and 

 compressed, the space between the dorsal carinae being acumi- 

 nate at apex. Lateral carinae coniluent at about two-thirds of 

 their length from the base. 



The tegmina are shorter than in the other species, the four 

 apical segments of the abdomen being visible beyond them 

 instead of through,- as in the case of the other two species. 

 The black dots along the veins are much reduced in compari- 

 son with the other species. 



The nymphs closely resemble those of D. sivezeyi Rridwell 

 but the prolongation of the head is slightly deflexed instead 

 of straight. 



$ The genital styles are more elongate than those of D. 

 swezey! and only gently curved, the slender points not being 

 elawlike as are those of D. mirahilis. The extreme apices are 

 slightly blunt and recurved. 



Fig. I. Dictyophorodelphax praedicta. cdeagus (highly enlarged). 



The edeagns has the slender apical ])ortion nearlv in a 

 straight line with the not greatly stouter basal portion. The 

 ventral surface of the slender apical portion is covered with 

 many small reflexed teeth and there are two groups of stouter 



The figure is the work of ^^Ir. \V. R. R. Potter, illustrator for the 

 H. S. P. A. Experiment Station. 



Proc. Haw. Ent. Soc, IV, Xo. i. June. 1919. 



