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United States Department of Agriculture

Agricultural Research Service

Title: New Host Records for Two Species of Gonatocerus (Hymenoptera: Mymaridae), Egg Parasitoids of Proconiine Sharpshooters (Hemiptera: Clypeorrhyncha: Cicadellidae), in Peru

item Logarzo, Guillermo - USDA/ARS/SABCL
item Triapitsyn, Serguei - UNIV OF CALIFORNIA
item Jones, Walker

Submitted to: Florida Entomologist
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 10, 2003
Publication Date: December 20, 2003
Citation: Florida Entomologist 86(4) 486

Interpretive Summary: The introduction of the glassy-winged sharpshooter (GWSS) into southern California in the 1990's has resulted in epidemics of disease in grape in Temecula, in Riverside County and in the lower San Joaquin Valley un Kern County. The GWSS is an effective vector of bacteria that produce the Pierce's disease (PD) of grape. So far, native natural enemies cannot control population of GWSS, so, a classical biological control program was started as part of the management control strategy of this pest. Since November of 2000, the ARS has performed a survey of egg parasitoids in South America. In this study, we report the results of the exploration for egg parasitoids in Peru in May 2002. Two species of wasps were obtained. Both parasitoids were exposed to egg masses of GWSS, in the University of California, Riverside, and USDA-APHIS Mission quarantine laboratories, respectively, and were successfully reared on H. coagulata eggs.

Technical Abstract: Exploration for egg parasitoids of proconiine sharpshooters was conducted in Junín State of Peru in May 2002. Adults of three leafhopper species, Pseudometopia amblardii, P. phalaesia, and Oncometopia n. sp., were collected and caged on Satsuma mandarin trees in an orchard near La Merced. Two species of the mymarid wasp genus Gonatocerus, G. triguttatus and G. sp. near ashmeadi, emerged from these egg masses, the latter from all three hosts but the former from eggs of P. amblardii, or P. phalaesia. These are the first known records of egg parasitoids of Pseudometopia species and also new host records for both species of Gonatocerus. An undetermined trichogrammatid species of a genus near Zagella was also reared from an egg mass of P. amblardii, or P. phalaesia.

Last Modified: 4/18/2015
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