Notes On Some Fulgoroidea Of Guam Author Swezey, O. H. Experiment Station, Hawaiian Sugar Planters' Association, Honolulu text 1946 1946-12-20 Bernice P. Bishop Museum Honolulu, Hawaii Insects of Guam II 149 156 book chapter http://doi.org/10.5281/zenodo.5164064 8ddfacbb-c42b-4385-b70b-ea5bd759c377 5164064 1. Perkinsiella thompsoni Muir , Haw. Ent. Soc., Proc. 2 : 240 , 1913 . Piti, May 2; Fonte Valley, Aug. 7; Dededo, Aug. 11. All by Swezey. This sugar cane leafhopper was described from specimens collected in Guam by Fullaway in 1911 . It was later collected more abundantly by Muir in Java, which is more likely its home. Eventually it may be found on intervening islands. We found it scarce in Guam . It was never conspicuous or numerous enough to be injurious to the cane. Whenever eggs were found, they were heavily parasitized by a mymarid which apparently is the same species which was introduced from Queensland to Hawaii in 1904 ( Paranagrus optabilis Perkins ). At Sinajana, June 8, of 43 eggs examined, 80 percent were parasitized . At Fonte Valley, Aug. 7, the few eggs found were all parasitized . At Dededo, Aug. 11, eggs examined were 78 percent parasitized . At the Agricultural School Farm, Piti, April 30, one exit hole of Ootetrastichus was seen in a cane leaf, but no other evidence of this parasite was found . It is apparent that Paranagrus has sufficient control of this leafhopper to prevent its being a pest.