Studies of two parasites of olive scale, Parlatoria oleae (Colvée): III. The role of an autoparasitic aphelinid, Coccophagoides utilis Doutt, in the control of Parlatoria oleae (Colvée)
AuthorsC. E. Kennett
C. B. Huffaker
G. L. Finney
Authors AffiliationsC. E. Kennett was Associate Specialist in the Experiment Station, Berkeley; C. B. Huffaker was Professor of Entomology and Entomologist in the Experiment Station, Berkeley; G. L. Finney was Specialist in Biological Control in the Experiment Station, Berkeley.
Hilgardia 37(9):255-282. DOI:10.3733/hilg.v37n09p255. March 1966.
The olive scale, Parlatoria oleae, was first found in California in 1934 and has since become a major pest. Attempts to control this insect by biological means began with the introduction of the external parasite, Aphytis maculicornis, from Iran in 1952. Inconsistent control by A. maculicornis led to the introduction of two additional parasites from Pakistan in 1957. One of these, Coccophagoides utilis, became established in California.
Coccophagoides utilis is an internal parasite which attacks both scale generations which P. oleae produces each year. Adult female C. utilis which have been mated deposit female eggs only. Unmated females deposit male eggs only. Field results show C. utilis capable of destroying up to 50 per cent of each host generation. The two species of parasites working together have exhibited the ability to give excellent control of olive scale.
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Huffaker C. B., Kennett C. E., Finney G. L. Biological control of olive scale, Parlatoria oleae (Colvée), in California by imported Aphytis maculicornis (Masi) (Hymenoptera: Aphelinidae). Hilgardia. 1962. 32(13):541-636. DOI: 10.3733/hilg.v32n13p541 [CrossRef]
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Smog damage to cotton in the San Joaquin Valley
Evaluating the profitability of brush management and oak tree thinning for range improvement
Sampling for California oakworm on landscape oaks
Growth control of Chinese elm with inhibitor sprays
Pests in the home garden
Field bindweed in California
Field bindweed in California
Cultural control of navel orangeworm in almond orchards
Eucalyptus out-perform other species in salty, flooded soils
Converting chaparral to grassland increases soil fertility
Studies of two parasites of olive scale, Parlatoria oleae (Colvée): I. A taxonomic analysis of parasitic Hymenoptera reared from Parlatoria oleae (Colvée)
Studies of two parasites of olive scale, Parlatoria oleae (Colvée): II. The biology of Coccophagoides utilis Doutt (Hymenoptera: Aphelinidae)
Studies of two parasites of olive scale, Parlatoria oleae (Colvée): IV. Biological control of Parlatoria oleae (Colvée) through the compensatory action of two introduced parasites
Studies of two parasites of olive scale, Parlatoria oleae (Colvée): V. The culture of Coccophagoides utilis Doutt, a parasite of Parlatoria oleae (Colvée)