260 



Petersen, H. Sauter"s Formosa- Ausbeute. 



Chrysopa decorata nov. spec. 



Whitish. Labrum pale yellow with blackish front border. Clypeus 

 at each side with a blackish triangulär spot and with a narrow black 

 front margin. Palpi yellowish brown with the apical Joint darker. 

 Face with a transverse row of three blackish spots below the In- 

 sertion of the antennae; the middle one oblong. Eyes dark brown. 

 Vertex raised and yellowish green. Antennae yellowish; the basal 

 Joint incrassated and with a brownish black stripe on its exterior 

 side. Prothorax broader than long with strongly rounded front angles. 

 Mesothorax with blackish brown wing-roots and with an almost com- 

 plete broad, dark brown streak along the front margin. Metaihorax, 



Fig. 10. Fore wing of Chrysopa decorata. 



abdomen and legs pale yellowish green; the bind tibiae strongly 

 dilated. Wings whitish, hyahne and with all the longitudinal ner- 

 vures pale yellowish green. The basal half part of the cross veins 

 in the costal and in the radial area pale yellowish green with black 

 ends; the apical half part and the first cross veins in the costal area 

 totally black. The origin of radial sector, the first cross vein be- 

 tween the radial sector and the media, all the gradate veins and a 

 Single cross vein at the bind margin black. A few basal cross 

 veins partly blackish. The other cross veins pale yellowish green. 

 The greater part of cross veins and some forks brownish shaded. 

 In the bind wing the apical half part of cross veins in the costal 

 area, the gradate veins and some few along the bind margin black; 

 some of the last mentioned with brown shadow. The pterostigma 

 yellowish green; slightly marked. The margins and nervures whitish 

 longhaired. Number of cross veins in the costal area of fore wing 

 17 — 18; between radius and radial sector 8 — 9. 



Length of body 6 — 7 mm; fore wing 10 mm; bind wing 9 mm; 

 antennae longer than fore wings. 



Two specimens from Kosempo, 7. VII. 1909 and 7. VII. 1911. 



It is a fine-looking species, unhke what I have seen of species 



