Japanese Journal of Applied Entomology and Zoology
Online ISSN : 1347-6068
Print ISSN : 0021-4914
ISSN-L : 0021-4914
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Volume 54, Issue 3
Displaying 1-15 of 15 articles from this issue
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Regular Papers
  • Effects of Temperature and Photoperiod on Development of the Camphor Tree Weevil, Pimelocerus hylobioides (Desbrochers) (Coleoptera: Curculionidae)
    Manabu Wakayama, Takenari Inoue, Shigeho Sato, Kaoru Maeto
    Article type: Original Article
    2010 Volume 54 Issue 3 Pages 97-106
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.97
    JOURNAL FREE ACCESS
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    The camphor tree weevil Pimelocerus hylobioides is a major pest insect injurious to Illicium anisatum trees whose cut branches are used as an offering to the spirits by Buddhists and which are cultivated mainly in western Japan. We reared the weevil under various photoperiod and temperature conditions. Under both 15L9D and 12L12D photoperiods, larvae developed into pupae without entering diapause at 18, 20 and 25°C. Larvae passed through five to 13 instar stages before pupation. The numbers of larval molts increased under low-temperature conditions. The developmental zero temperature and the total effective temperature for egg, larva and pupa were 10.45°C and 137.42 degree-days (DD), 15.19°C and 1,361.58 DD, and 10.28°C and 177.34 DD, respectively. Life cycles in the warm temperate lowland and the mountain zone of Kochi Prefecture were estimated. In the warm temperate lowland, eggs laid in early summer developed into adults and emerged from the host tree in autumn, but eggs laid in mid-summer to autumn developed into adults in the second year. In the mountain zone, eggs laid in summer and autumn developed into adults in the second and third year, respectively.
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  • Estimation of the Annual Number of Generations of the Rice Bug, Leptocorisa chinensis Dallas (Hemiptera: Alydidae), Using the Development of Gonads and Formation of Endocuticle Layers after Adult Emergence
    Nobuhiro Matsuki, Mami Ishizaki, Tomonari Watanabe
    Article type: Original Article
    2010 Volume 54 Issue 3 Pages 107-113
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.107
    JOURNAL FREE ACCESS
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    To clarify the timing of the appearance of overwintered and diapausing adults of the rice bug, Leptocorisa chinensis, under natural condition, we adopted two criteria, the developmental stages of gonads and the number of endocuticle layers in the cuticle of the hind-leg femur. Development of gonads after emergence was promoted in adults reared under a long-day photoperiodic condition, but suppressed under a short-day condition. The deposition rate of endocuticle layers was not influenced by the photoperiod but depended on age. These criteria were applied to estimate the annual number of generations of this species in Yamatsuri, Fukushima Prefecture, in 2006. According to these criteria, adults caught in early August, late August and early September were identified as an overwintered, newly-emerged and diapausing individuals, respectively. These data show that L. chinensis has mainly a univoltine life cycle in this region.
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  • Rediscovery of Carposina niponensis Walsingham and Carposinids Caught by Synthetic Sex Pheromone Trap for C. sasakii Matsumura in Japan (Lepidoptera: Carposinidae)
    Yoshitsugu Nasu, Katsunori Tamashima, Manabu Shibao, Shin-ichi Yoshima ...
    Article type: Original Article
    2010 Volume 54 Issue 3 Pages 115-126
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.115
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    Carposina niponensis Walsingham, which had not been collected after 1886 in Japan, was caught in a synthetic sex pheromone trap for the peach fruit moth, C. sasakii Matsumura, in Wakayama and Oita Prefectures in 2008. Using traps in sixteen localities from Hokkaido to Kyushu in 2009, seven carposinids, C. sasakii, C. niponensis, C. maritima Ponomarenko, Meridarchis excisa (Walsingham), M. jumboa Kawabe, Peragrachis syncolleta (Meyrick) and Commatarcha palaeosema Meyrick, were captured. The adults and male genitalia of these species are illustrated, and keys to the species based on the external features and male genitalia are given. Numbers of captured C. sasakii by each of three synthetic pheromone components, (Z)-13-eicosen-10-one (A), (Z)-12-nonadecen-9-one (B), and A+B (20 : 1 ratio), rose in the orders A, A+B, and B, and component A alone was sufficient bait for male moths, as already reported. Matsumura listed the peach fruit moth under the name Carpocapsa persicana Sasaki in his book published in 1897, but the name had not been used as a valid name before that time; therefore, the author of persicana is not Sasaki but Matsumura, as per Article 50.1 of the International Code of Zoological Nomenclature (4th edition) (ICZN). The name persicana Matsumura, 1897, is the oldest available name for the peach fruit moth, and so the name sasakii Matsumura, 1900, is a junior synonym. The name persicana Matsumura (as Sasaki) has been used in at least three works, published in 1901, 1902, 1905 by one author, after 1899; however, the name sasakii has been found in many studies published by many authors since 1989. Consequently, we consider that the use of the older name, persicana Matsumura, would threaten the stability and cause confusion, and so wish to maintain the use of the younger synonym, sasakii Matsumura (Article 23.9 of ICZN). The name persicana Sasaki, 1905, which has been treated as a junior synonym for sasakii Matsumura or niponensis Walsingham, is a primary homonym of persicana Matsumura and permanently invalid, as per Article 57.2 of ICZN.
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  • Range Expansion of the Exotic Cerambycid Beetle, Paraglenea fortunei, in Kii Peninsula, Western Japan
    Atsushi Kato, Nobuo Ohbayashi
    Article type: Original Article
    2010 Volume 54 Issue 3 Pages 127-134
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.127
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    Range expansion of the exotic cerambycid beetle Paraglenea fortunei (Saunders, 1853) on the Kii Peninsula was tracked. A literature-based survey of this species revealed that it was first observed in Ise-shi in Mie Prefecture and in northern Nara Prefecture in the 1970s. Ten or twenty years after becoming established, the species started to spread toward the south of the peninsula. We traced the expansion of this species from 1999 to 2008 using field observations in Wakayama, Nara and Mie Prefectures. The range of the beetle extended southward annually, reaching the southernmost area of the peninsula by 2008; it took 37 years from first being discovered to occupy the whole peninsula.
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Notes
  • Effect of Trimming and Harvesting of Host Tea Plants and Bigleaf Podocarp Trees on the Dispersal of Adult Yellow Tea Thrips Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) in Citrus Orchards
    Shinichi Masui
    Article type: Short Communication
    2010 Volume 54 Issue 3 Pages 135-139
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.135
    JOURNAL FREE ACCESS
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    The effect of trimming and harvesting host tea plants and bigleaf podocarp trees on the dispersal of Scirtothrips dorsalis Hood adults to citrus orchards was investigated in tea fields and in the windbreaks of bigleaf podocarps adjacent to a citrus orchard. The days of the highest trap catch in the three types of fields coincided with each other and with the days on which there were the maximum number of adults in the citrus orchards, estimated as a function of generation temperature. In all three types of fields, when the tea plants and bigleaf podocarp trees were not trimmed after the peak days, the number of adults captured by the trap decreased within 10 d to the level observed 5 d before the peak. This decrease was not observed when the tea plants were trimmed 1–9 d after the peak days. These results suggest that the flight activity of adults is highest immediately after emergence and that trimming host plants encourages the flight behavior of adults by reducing the amount of food available.
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  • Tea-Infesting Population of the Citrus Spiny Whitefly, Aleurocanthus spiniferus (Homoptera: Aleyrodidae), does not Accept Citrus Leaves as Host Plants
    Atsushi Kasai, Koji Yamashita, Yutaka Yoshiyasu
    Article type: Short Communication
    2010 Volume 54 Issue 3 Pages 140-143
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.140
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    The first observation that the citrus spiny whitefly, Aleurocanthus spiniferus, which is a pest of citrus plants, attacked the tea plant Camellia sinensis in Japan was made in August 2004. We investigated the host plant suitability of three plant species, Ca. sinensis, Ca. sasanqua, and Citrus unshiu, for tea-infesting and citrus-infesting populations of A. spiniferus. Adult females of the citrus-infesting population laid no eggs on Ca. sinensis leaves. In the tea-infesting population, adult females laid a few eggs on Ci. unshiu leaves, but no nymphs settled on Ci. unshiu leaves. These results suggest that the Japanese tea-infesting population was derived from the reported Chinese or Taiwanese tea-infesting population, rather than from a Japanese citrus-infesting population. The host plant suitability of Ca. sasanqua for the tea-infesting population was equivalent to that of Ca. sinensis. Accordingly, the tea-infesting population of A. spiniferus might harm species closely related to Ca. sinensis, such as Ca. sasanqua.
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  • Invasion of the Snail-Eating Flatworm Platydemus manokwari on Minami-daito Island
    Shin Matsui, Kana Akatani, Taro Matsuo, Shinji Sugiura
    Article type: Short Communication
    2010 Volume 54 Issue 3 Pages 143-146
    Published: August 25, 2010
    Released on J-STAGE: August 28, 2010
    DOIhttps://doi.org/10.1303/jjaez.2010.143
    JOURNAL FREE ACCESS
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    Introduction of the snail-eating flatworm Platydemus manokwari has caused the extinction and decline of native land snails on tropical and subtropical islands. Here we report the first record of P. manokwari from Minami-daito Island in the oceanic Daito Islands (western Pacific) which support an endemic land snail fauna. Platydemus manokwari was found in July 2004, July 2008, and June 2009 on Minami-daito Island. To clarify the effect of P. manokwari on land snail survival in the field, we examined survival rates of snails experimentally placed in the areas where P. manokwari were found in June 2009. Despite the presence of P. manokwari, we found little evidence of predation, suggesting that the density of P. manokwari was not high enough to impact snails on Minami-daito Island.
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