10 



BULLETIN 1035, U. S. DEPARTMENT OF AGEICULTUEE. 



possess powerful jaws with which thej' attack their prey. This 

 species is quite beneficial. 



Scymnus utilis Horn. — The most important enemy of the red 

 spider found up to this time is a very small black ladybird beetle 



Fig. 6. — Scymnus utiUs: a, Larva; h, pupa: 



adult. Greatly enlarged. 



(fig. 6, c) about iV-inch long. With the beetles may be found their 

 dark brown larvse (fig. 6, a), also feeding on all stages of the red 

 spider. 



ScymnuH kimeli Casey is another ladybird beetle found feeding in 

 both the larva and adult stages on the red spider. It is larger than 



C'r/f^f^vf^i 



Fir;. 7. — Lcptolhripn mali: Adult thrips. (Ireatly enlarged. 



the former, the abdomen is black, and the head reddish. It is not 



a very abundant species and is not as beneficial as the former beetle. 



LejytothHps mali Hinds is a large black thrips (fig. T) predatory 



in both the larva and adult stages, and when present is very active 



