Volume 25 – 1985 : Hawaiian Entomological Society

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    Life History and Feeding Behavior of Nephaspis amnicola Wingo
    (Hawaiian Entomological Society, 1985) Yoshida, Harvey A. ; Mau, Ronald F.L.
    The life history and feeding behavior of the coccinellid Nephaspis amnicola Wingo, were studied in the laboratory. Eggs hatched in an average of 6.9 days. The 1st, 2nd, 3rd, and 4th larval stages were completed in an average of 3.1, 2.3, 2.6, and 5.3 days, respectively. The pupal stage was completed in an average of 6.2 days. Adult longevity varied greatly; males and females lived for an average of 349 and 162 days, respectively. Each female laid an average of 212 eggs, and the ovipositional period was 131 days. Prey-finding by larvae and adults depended upon chance contact. Feeding was by extraction and regurgitation.
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    Status of Three Pestiferous Fruit Fly (Diptera: Tephritidae) Populations on Kauai Following Hurricane Iwa
    (Hawaiian Entomological Society, 1985) Williamson, D.L. ; Vargas, R.I. ; Harris, E.J.
    The eye of Hurricane Iwa surrounded by cyclonic winds of 144 km/h and gusts up to 176 km/h passed within 32 km of Niihau and Kauai on Nov. 23, 1982. Upper story vegetation was heavily damaged over large portions of Kauai with pronounced impact on some fauna. Fruit fly surveys had been conducted over a period of nearly 5 years prior to the hurricane to establish distribution and seasonality of the oriental fruit fly, Dacus donate Hendel, the melon fly, D. cucurbitae Coquillett, and the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). This baseline information provided the impetus for assessing the ecological implications the hurricane may have had on numbers of adults present up to the fifth week following the hurricane. Both the oriental fruit fly and melon fly occupied dense vegetation sites that provided protection to habitat and host plants. Also, populations were sufficiently distributed and abundant to sustain the highest percentage reduction in numbers. Medfly, in contrast, was not captured in the island peripheral habitats and storm damage appeared to have impacted most on this species. While oriental fruit fly was trapped at the rate of hundreds/trap/day and melon fly in tens, no medflies were captured using both Jackson and McPhail traps in a concerted effort. Medfly likely was reduced to a low remnant population in isolated pockets of inland host material such as feral coffee and guava that were protected from strongest winds.
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    Through the Looking Glass: the Hawaiian Entomological Society
    (Hawaiian Entomological Society, 1985) Tenorio, JoAnn M.
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    Biology of the Fiery Skipper, Hylephila phyleus (Lepidoptera: Hesperiidae), a Turfgrass Pest in Hawaii
    (Hawaiian Entomological Society, 1985) Tashiro, H. ; Mitchell, W.C.
    Field collected females of the fiery skipper, Hylephila phyleus (Drury), oviposited almost immediately when placed in a screen cage 24 * 24 x 24 cm and held in the greenhouse under natural daylight at diurnal temperatures of 26.S to 3S.0°C. Oviposition medium was closely cut FB-137 bermudagrass, Cynodon spp. More than 60% of the eggs, deposited singly, were placed on the lower surface of blades. There were no sexual differences in larval size or developmental rate. Laboratory reared females began ovipositing on the third day following eclosion peaking during the fifth through the ninth day. Laboratory reared females produced more viable eggs when held in a 61 * 99 * 66 cm cage than in a 24 x 24 x 24 cm cage, indicating a possible need for greater flight activities for normal reproductive development.
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    Two New Eye Color Mutants in the Mediterranean Fruit Fly, Ceratitis capitata
    (Hawaiian Entomological Society, 1985) Saul, Stephen H.
    Two new eye color mutants are described in the Mediterranean fruit fly, Ceratitis capitata (Wiedemann). Light eye (It) is an autosomal recessive gene linked to the previously described double chaetae (dc) locus. Purple eye (Pr) is an autosomal dominant and segregates independently from dc and ft. Pr is the first mutant described in this species which is dominant in expression.