Volume 31 – 1992 : Hawaiian Entomological Society
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Item Occurrence of the Twospotted Spider Mite, Tetranychus urticae Koch (Acari: Tetranychidae), in the Hawaiian Islands(Hawaiian Entomological Society, 1992) Jones, Vincent P.; Hara, Arnold; Hashimoto, Clark; Rathman, Robin J.; McMurtry, James A.The twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), has been identified from several locations on the islands of Oahu, Maui and Hawaii. The importance of this fact with regard to importation of ornamentals and phytoseiid predators of spider mites reared on twospotted spider mite is discussed.Item Notes on Two Species of Megaspilidae in Hawaii (Hymenoptera: Ceraphronoidea: Megaspilidae)(Hawaiian Entomological Society, 1992) Beardsley, John W.Two immigrant species of Megaspilidae appear to be established in Hawaii. One, placed here in the genus Dendrocerus Ratzeburg, is known only from elevations above 3,000 ft on the islands of Maui and Hawaii, and was first collected here in 1946. A second species, placed tentatively in the genus Megaspilus Westwood, was collected on Oahu at about 350 ft elevation in February 1991. Neither has yet been identified to species.Item Evidence for Inhibition of Termite (Isoptera: Rhinotermitidae) Feeding by Extracellular Metabolites of a Wood Decay Fungus(Hawaiian Entomological Society, 1992) Grace, J Kenneth; Goodell, Barry S.; Jones, Wendy E.; Chandhoke, Vikas; Jellison, JodySiderophores are iron-chelating extracellular fungal metabolites which may be involved in initiating wood decay. A purified siderophore extract isolated from the brown-rot decay fungus Gloeophyllum trabeum (Pers. ex Fr.) Murr. (Basidiomycetes: Polyporaceae) was found to deter feeding by Formosan subterranean termites, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae). This fungus has previously been associated with preferential feeding on decayed wood by subterranean termites, and solvent extracts have been reported to induce termite trail-following, arrestment, and/or aggregation. This is the first report of G. trabeum metabolites or fungal siderophores having a negative behavioral effect on subterranean termites.Item Mediterranean Fruit Fly, Ceratitis capitata (Wiedemann), Reared from Fruit of Prunus ilicifolia (Nutt.) Walp. in Hawaii(Hawaiian Entomological Society, 1992) Beardsley, John W.; Uchida, Grant K.During August 1990, six individuals of a native California chaparral tree, Prunus ilicifolia (Nutt.) Walp., were found growing at 6,600 ft. elevation al Pohakuloa, Hawaii Island. Two collections totaling 1,224 ripe fruit, made from these trees during September and November, yielded 1,649 mature larvae which produced 1,566 adults of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). The average yield of Medfly adults/kg fruit was 277.13, indicating that P. ilicifolia is an excellent host for this pest. This finding may have implications for future Medfly eradication or control programs in California since P. ilicifolia is a widely distributed element of mesic chaparral communities there.Item Establishment of Encarsia smithi (Silvestri) (Hymenoptera: Aphelinidae) on Pohnpei for Control of the Orange Spiny Whitefly, Aleurocanthus spiniferus (Quaintance) (Homoptera: Aleyrodidae)(Hawaiian Entomological Society, 1992) Muniappan, R.; Marutani, M.; Esguerra, NelsonAleurocanthus spiniferus (Quaintance) was recognized as a serious problem on Pohnpei in 1987. Encarsia smithi (Silvestri) was released on January 7, 1988. The parasite was recovered on April 28, 1988, and an effective control of A. spiniferus was achieved by February 1989.Item Effect of Eucalyptus dives Extracts on Pheidole megacephala (Fabricius) (Hymenoptera: Formicidae)(Hawaiian Entomological Society, 1992) Jahn, Gary C.Eucalyptus dives extracts repelled starved Pheidole megacephala (Fabricius) from sucrose solutions in choice tests.Item Supernumerary Molts in the First Instar of Diachasmimorpha tryoni (Cameron) (Hymenoptera: Braconidae: Opiinae)(Hawaiian Entomological Society, 1992) Ramadan, Mohsen M.; Beardsley, John W.Supernumerary molts involving as many as 3 head capsule exuviae of the morphological first instar larvae of Diachasmimorpha tryoni (Cameron) were observed in the host puparium or the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). This phenomenon was frequently observed when parasitization occurred in early stage host larvae.Item The Taxonomy of Crawforda triopsyllina Caldwell (Homoptera: Psyllidae) with Descriptions of the Immature Stages(Hawaiian Entomological Society, 1992) Uchida, Grant K.; Beardsley, John W.Taxonomic papers dealing with the endemic Hawaiian psyllid Crawforda triopsyllina Caldwell are reviewed, and its five nymphal instant are described and illustrated.Item Description of the Immature Stages of Trioza uniqua (Caldwell) (Homoptera: Psyllidae)(Hawaiian Entomological Society, 1992) Uchida, Grant K.; Beardsley, John W.The taxonomic position of Trioza uniqua (Caldwell) and its evolutionary affinities with the genera Kuwayama and Trioza are reviewed. Detailed descriptions of the five nymphal instars are given.Item Megatrioza zanthoxyli, n. sp. (Homoptera: Psyllidae), with Descriptions of Adult and Immature Stages(Hawaiian Entomological Society, 1992) Uchida, Grant K.; Beardsley, John W.The adult and immature stages of a new endemic Hawaiian psyllid, Megatrioza zanthoxyli, are described. Keys to separate the adults and nymphs of this species from those of the Megatrioza palmicola Crawford group are presented.
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