Volume 29 – 1989 : Hawaiian Entomological Society

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    Operational and Scientific Notes Biological Control of Lantana camara L. in Yap
    (Hawaiian Entomological Society, 1989) Muniappan, R.
    The purposely introduced natural enemies of Lantana camara I.. namely, Hypena strigata (F.), Salbia haemorrhoidalis Guenee and Teleonemia scrupulosa Stal, failed to establish on Yap. Lantanophaga pusillidactyla (Walker) and Epinotia lantana Busck, which were not purposely introduced, were found to be established.
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    Hawaiian Eucoilidae (Hymenoptera: Cynipoidea), Key to Genera and Taxonomic Notes on Apparently Non-Endemic Species
    (Hawaiian Entomological Society, 1989) Beardsley, John W.
    A key to the genera of Eucoilidae known to occur in Hawaii is presented. All known non-endemic species are treated except those which attack larvae of Agromyzidae (Beardsley 1988) and those of the genus Kleidotoma Westwood (Beardsley in press). The following three species are described as new: Eucoila ophyrae, Hexacola neoscatellae Rhoptomeris advena. The following new combinations are proposed: Chrestosema magnifica for Pseudeucoila (Hexamocera) magnificus Yoshimoto, Didtyctium weldi for Pseudeucoila (Pseudeucoila) weldi Yoshimoto, Ganaspis ovata for Pseudeucoila ovata Yoshimoto, and Leptopilina rugipunctata for Pseudeucoila (Pseudeucoila) rugipunctata Yoshimoto. The following new synonomies are proposed: Hexacola samuelsoni Yoshimoto and Yasumatsu (1965) as a junior synonym of Micreriodes guamensis Yoshimoto (1962), and Hexaplasta konensis Ashmead (1901) as a junior synonym of Trybliographa xanthopada Ashmead (1896). The following immigrant species are reported as new to the Hawaiian fauna: Micreriodes guamensis, Eucoila ophyrae, Didyctium weldi, Hexacola neoscatellae, Leptopilina boutardi (Barbotin el al.) and Rhoptomeris advena. In addition, three as yet undetermined species assigned lo Hexacola Forster are each known from a single specimen collected on Oahu.
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    Present Status of Oriental and Mediterranean Fruit Flies and Their Parasites at Three Locations on Oahu, Hawaii
    (Hawaiian Entomological Society, 1989) Chaudhry, Muhammad M.K.
    To establish present status of the oriental fruit fly (OFF), Dacus dorsalis Hendel, and the Mediterranean fruit fly (MED). Ceratitis capitata (Wiedemann), and their parasitoids on Oahu, Hawaii, a study was carried out from August to December 1987, by collecting guava fruit and trapping adult males with lures at three locations; Mt. Tantalus, Lyon Arboretum and Waimanalo. Mean weights of individual guava fruit collected from Mt. Tantalus, Lyon Arboretum, and Waimanalo were found to be 74.0 g. 78.2 g. 9.7 g respectively. Only OFF emerged from 180 fruit which were held in the laboratory, although adult males of MED were trapped at Waimanalo. Populations of OFF were most abundant at the highest elevation, Mt. Tantalus, where the mean number of flies trapped with a methyl eugenol lure in 15 minutes was 55.5. Numbers trapped al the middle elevation, Lyon Arboretum, and lower elevation, Waimanalo, were 29.7, 29.0 respectively. The number of puparia per kg fruit sampled was highest (72.0) at the lowest elevation, Waimanalo. The numbers or puparia per kg fruit from the middle and highest elevations were 60.5, 48.4 respectively. Mean parasitism by the opiine wasp Biosteres arisanus (Sonan) was 48.8%. 37.7%. 29.6% respectively for Mt. Tantalus, Lyon Arboretum and Waimanalo.
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    Discovery of the Genus Gampsocera Schiner from Hawaii, with a Description of a New Species (Diptera: Chloropidae)
    (Hawaiian Entomological Society, 1989) Kanmiya, Kenkichi
    Gampsocera hardyi sp. nov. is described. This is the first species of this genus discovered in Hawaii. The species shows a considerable sexual dimorphism on the markings of thoracic dorsum, legs and wing, and shape of arista. The species was reared from rotting stems of banana, papaya and Wikstroemia sp.
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    Development of The Transparentwinged Plant Bug, Hyalopeplus pellucidus (Stal), A Pest of Cultivated Guava in Hawaii
    (Hawaiian Entomological Society, 1989) Mau, Ronald F.L. ; Nishijima, Kate
    The life cycle of the transparentwinged plant bug, Hyalopeplus pellucidus (Stal), was studied on guava, Psidium guajava I... Eggs were deposited in stems, flower buds, and leaf midribs and hatched in an average of 7 days. The 5 nymphal stadia were completed in an average of 14 days. The nymphs were anthophagous, and feeding on flower buds was necessary for normal development. Cage studies showed a direct relationship between feeding injury and the abscission of guava flower buds.