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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean journal of applied entomology
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Journal DOI :
Korean Society of Applied Entomology
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Volume & Issues
Volume 54, Issue 4 - Dec 2015
Volume 54, Issue 3 - Sep 2015
Volume 54, Issue 2 - Jun 2015
Volume 54, Issue 1 - Mar 2015
Selecting the target year
First Record of the Genus Parechthistatus Breuning (Coleoptera: Cerambycidae: Lamiinae) in Korea
Lee, Seung-Hyun ; Seo, Jangwon ; Hong, Ki-Jeong ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 285~288
DOI : 10.5656/KSAE.2015.07.0.035
A genus Parechthistatus Breuning belongs to the subfamily Lamiinae (Coleoptera: Cerambycidae) is reported in Korea for the first time, with a species of Parechthistatus gibber (Bates). Morphological information was provided, along with photographs of the adult and larval specimens.
Responses of Phyllotreta striolata and Athalia rosae ruficornis to Colored-sticky Traps and Aggregation Pheromone and Seasonal Fluctuations in Radish Fields on Jeju Island
Song, Jeong Heub ; Yang, Young Taek ; Yang, Cheol Jun ; Choi, Byeong Ryul ; Jwa, Chang Sook ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 289~294
DOI : 10.5656/KSAE.2015.08.0.039
Striped flea beetle, Phyllotreta striolata (SFB) and turnip sawfly, Athalia rosae ruficornis (TSF) are two economically important sporadic pests in radish fields on Jeju island. The response of adult SFB and TSF to a mixture of aggregation pheromone, (+)-(6R,7S)-himachala-9,11-diene and host plant volatile, allyl isothiocyanate (HAI), as well as to yellow and blue sticky traps was examined in radish fields. Adult SFB was more attracted to the sticky trap with HAI, regardless of the color of the sticky trap; however, adult TSF was more attracted on the yellow sticky trap than blue, and no effect of HAI was observed. The adult SFB and TSF can be effectively monitored using yellow sticky traps placed 10 cm above the plant canopy. SFB and TSF had 3 and 5 peak times in a year, respectively. The first peak occurred in the middle of March for SFB and mid-late of April for TSF. We expect that the results of the present study can facilitate minimizing the damage caused by the two important pests in commercial radish fields.
Host plants and Biological Characteristics of Illeis koebelei Timberlake (Coleoptera: Coccinellidae: Halyziini) in Gyeonggi-do
Lee, Young Su ; Jang, Myoung Jun ; Lee, Jin Gu ; Kim, Jun-Ran ; Lee, Joon Ho ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 295~301
DOI : 10.5656/KSAE.2015.08.0.030
We investigated mycophagous ladybird, Illeis koebelei from 12 species of plants infected with powdery mildew in Gyeonggi-do, Korea. The pear tree, Pyrus ussuriensis var. macrostipes (Nakai), was most preferred by I. koebelei. This species was found from early July to early November in pear orchards. There was no entomophagous trace in the gut of I. koebelei without powdery mildew spores in a microscope. All stages except egg and pupa are obligate mycophagous, and the feeding potential is ranked as follows: fourth instar, adults, third instar, second instar, and first instar. Feeding amounts of each stage of I. koebelei were 45.6, 144.4, 372.2, 628.1, and
of cucumber powdery mildew per day. Fourth instar larvae showed highest consumption of cucumber powdery mildew. Developmental periods of four larval instars and adults feeding cucumber powdery mildew were 1.2, 2.3, 2.3, 4.6, and 37.7 days, respectively, at
. In this study, we could not determine the feeding potential of I. koebelei against the cucumber powdery mildew; therefore, and further studies are required to elucidate the potential of this species as a biological control agent, e.g., mass rearing, selection of low toxic chemical agents for Integrated Pest Management (IPM), and control techniques against powdery mildew in agro-ecosystems.
Decrease in Genetic Variation of Overwintering Populations of the Diamondback Moth during Seasonal Occurrence
Kim, Eunseong ; Park, Areum ; Park, Youngjin ; Kim, Jooil ; Kim, Yonggyun ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 303~310
DOI : 10.5656/KSAE.2015.08.0.028
The diamondback moth, Plutella xylostella, overwinters in some protected areas in Korea. Using a sex pheromone trap, the adults were monitored since the occurrence of the overwintering populations. In Andong, P. xylostella exhibited four adult peaks in a year. Biological characters, such as cold tolerance, insecticide susceptibility, and developmental rate, were analyzed and showed a significant variation among different local overwintering populations. Population genetic variation was assessed with molecular markers, in which the initial high genetic variation among the overwintering populations decreased with the progress of seasons. These results suggests that there may be a significant migration of P. xylostella to decrease the genetic variation among the different local populations that are different in biological characters.
Effects of Egg-plant as a Trap Plant Attracting Bemisia tabaci Genn. (Hemiptera: Aleyrodidae) Adults Available on Tomato Greenhouses
Choi, Yong-Seok ; Seo, Jeong-Hak ; Whang, In-Su ; Kim, Gyung-Je ; Choi, Byeong-Ryeol ; Jeong, Tae-Woo ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 311~316
DOI : 10.5656/KSAE.2015.08.0.029
This study was performed to ascertain the potential of egg plant for use as a trap plant to attract Bemisia tabaci adults compared to that of tomato. Choice tests were conducted to compare the preference of B. tabaci adults to horseweed, egg-plant, cucumber, and tomato. B. tabaci adults were found to be more sensitive to visual cues than to odor cues, and they preferred the egg-plant and cucumber to horseweed. The attraction rates of the egg-plant and cucumber to B. tabaci adults were 82.3% and 82.5% respectively, compared to that of tomato. Because egg-plants are easier to manage compared to cucumber, we excluded cucumber from subsequent experiment. The attraction rate of egg-plant to B. tabaci adults was >90% when the height of egg-plant was equal or more than that of the tomato plant.
Eight Stenus Latreille species (Coleoptera, Staphylinidae, Steninae) in Korea
Oh, Kwang-Sik ; Cho, Young-Bok ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 317~326
DOI : 10.5656/KSAE.2015.08.0.032
Eight species of the genus Stenus Latreille are documented for the first time in Korea. Among them, three species, Stenus burjaetus Puthz, S. depressus Puthz and S. gibbicollis J. Sahlberg, are recorded for the first time in the Korean peninsula. And five species, S. coronatus coronatus L. Benick, S. decoratus L. Benick, S. koreanus Puthz, S. rugipennis Sharp and S. sharpi Bernhauer and Schubert, are newly recorded in South Korea. The adult photographs, illustrations of aedeagus and male sternite IX of them, and a taxonomic key of Korean Stenus species are presented.
Ant Assemblages in a Burned Forest in South Korea: Recovery Process and Restoration Method
Kwon, Tae-Sung ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 327~333
DOI : 10.5656/KSAE.2015.09.0.038
In order to identify the post-fire changes of ant assemblages after a forest fire, ants were surveyed at three survey sites (artificial reforestation site, natural reforestation site, and unburned forest site) in a burned forest area for eight years from 2005 using pitfall traps. 24 species were collected, and Nylanderia flavipes was the most abundant. Ant species preferring forest habitats (e.g. Aphaenogaster japonica. Lasius spathepus, and Plagiolepis flavescens) more occurred at the unburned forest site and the natural reforestation site, whereas ant species preferring open habitat (e.g., Formica japonica, Camponotus japonicus, and Tetramorium caespitum) more occurred at the artificial reforestation site. Ordination analysis indicated that ant communities of the artificial reforestation site were more changed compared with those of the natural reforestation site after the fire. The communities of the natural reforestation site were restored to the pre-fire state in five to six years after fire, whereas those of the artificial forest site seemed to take about 25 years to restore.
Arthropod Diversity and Community Structure in Fields of Non-genetically Modified (GM) and Herbicide-tolerant GM Rice
Kim, Young-Joong ; Lee, Joon-Ho ; Back, Kyoungwhan ; Kim, Chang-Gi ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 335~343
DOI : 10.5656/KSAE.2015.09.0.043
One of the primary concerns about the environmental risks of genetically modified (GM) crops is that they may have adverse effects on the local arthropod communities. In this study, we investigated whether the arthropod diversity and community structure in fields of GM rice tolerant to protoporphyrinogen oxidase (PPO)-inhibiting herbicides differ from those in non-GM (control) rice fields. The aim of this study was to assess the potential adverse effects of GM rice on the local arthropod communities. During the growing seasons in the study period, we collected arthropods from both fields by using yellow sticky traps and compared the diversity and community structure of arthropods from the two sites. Overall, the GM rice had no significant effect on the diversity of the local arthropod communities. In addition, multivariate analyses (permutational multivariate analysis of variance and nonmetric multidimensional scaling) showed that the structures of arthropod communities were not affected by the rice genotype (GM vs. non-GM), although these comparisons were made using data obtained at different sampling dates.
The Status of Pest Occurrence on Phalaenopsis Orchid in Korea
Kim, Dong Hwan ; Cho, Myoung Rae ; Kang, Taek Jun ; Yang, Chang Yeol ; Kim, Hyeong Hwan ; Yoon, Jung Beom ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 345~349
DOI : 10.5656/KSAE.2015.09.0.054
The pest species occurring on the aboveground parts of Phalaenopsis orchids were studied for a period of two years (Aug. 2013 to June 2015) at 9 Phalaenopsis farms in Korea. In total, 10 species of insect pest were identified : Tenuipalpus pacificus Baker, Tyrophagus putrescentiae Schrank, Frankliniella occidentalis Pergande, Frankliniella intonsa Trybom, Thrips tabaci Lindeman, Scirtothrips dorsalis Hood, Pseudococcus dendrobiorum Williams, Pseudococcus longispinus Targioni Tozzetti, Coccus hesperidum L., Limax marginatus
. T. pacificus occurred in most of the farms surveyed in this study (6). The observation frequency of T. pacificus and F. intonsa were highest, they were observed in 10 out of 96 surveys. Although P. longispinus was only observed to occur on two farms, their observation frequency (9 observations, 9.4%) and density (2-289 per 20 plants) were high. Thus, it seems that T. pacificus, F. intonsa, and P. longispinus are the major pests affecting Phalaenopsis orchid farms in Korea.
Overwintering Sites and Winter Mortality of Tetranychus urticae in an Apple Orchard in Korea
Lee, Jung-Sup ; Lee, Sun-Young ; Do, Yun-Su ; Lee, Seong Chan ; Cho, Il Whan ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 351~357
DOI : 10.5656/KSAE.2015.09.0.053
The two-spotted spider mite Tetranychus urticae Koch, overwinters in apple culture areas of apple orchards. The mite overwinters in various places on the apple trees, usually in groups of 5-15 females. Overwintering females were mostly found in bark crevices with the hibernation cocoons of the oriental fruit moth, Grapholita molesta Busck. They were also found in small crevices of the bark, and in pedicels left after fruit harvesting. Furthermore, overwintering females were found on rough bark at the bases of buds and spurs, on small limbs and twigs, and in limb crevices and forks. Empty scales of dead diaspidids and coccids, as well as cocoons of lacewings and mummies of parasitized aphids sporadically found on trees, were found to be less common overwintering sites for females of the two-spotted spider mite. In two successive years, the mortality of overwintering females was very high, reaching approximately 72 and 80%. This could be due to the low temperature of winter season in Korea and the low cold tolerance of the mite.
Variation in Development and DNA Methylation of Spodoptera exigua Fed with Different Diets
Kim, Taehyung ; Kumar, Sunil ; Kim, Yonggyun ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 359~367
DOI : 10.5656/KSAE.2015.10.0.048
Physiological plasticity of insects can be closely related with their epigenetic change. This hypothesis was tested using a polyphagous lepidopteran insect, Spodoptera exigua, by assessing the effects of different diets on development and DNA methylation. Three different diets (Welsh onion (WO), Chinese cabbage (CC), artificial diet (AD)) were assessed by feeding a cohort of larvae from neonate to last instar. There were significant differences in larval developmental rate, pupal weight and adult emergence according to diet treatments. AD-fed larvae exhibited the fastest developmental rate along with the highest pupal weight and adult emergence. Among natural hosts, WO was more favorable for development of S. exigua than CC. Total hemolymph proteins and sugars in the last instar larvae were varied among different diets. Gene expression of an insulin-like peptide (SeILP1) presumably associated with development was also varied among diets. Cytosine methylation of genomic DNA was assessed using a monoclonal antibody. Genomic DNA of S. exigua larvae was methylated. DNA methylation was apparently varied among different diet-fed larvae. The facts that a cohort of S. exigua was differentiated in developmental rate and cytosine methylation by different diets suggest that epigenetic factor(s) may play a crucial role in the physiological plasticity.
Efficacy Test of Mating Disruptors Against Peach Fruit Moth, Grapholita molesta, using Polypropylene Dispenser Containing Ester Wax
Yoon, Ji Young ; Kim, Da Eun ; Im, Yu Na ; Lee, Ji Sung ; Yang, Chang Yeol ; Kim, Jong-Duk ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 369~374
DOI : 10.5656/KSAE.2015.10.0.052
Grapholita molesta (GM) has been considered as a major problem to apple and peach orchards. Mating disrupters have been applied to control the pest over the world as an Integrated Pest Management [IPM] tool. Various types of dispensers releasing mating disrupters have been developed with different formulation of wax, polyethylene tube and aerosol. In this study, the dispensers that were composed of ester waxes and polypropylene (PP) film were used as dispenser materials to analyze release pattern of GM pheromone compared with paraffin wax and polyethylene (PE) film. The release pattern in PP film group was consistent with time while PE film group irregular. Based on these results, Japan wax_PP film dispenser (Japan_PP) was manufactured and showed the mating disruption effect of 98% during 5months in peach orchard.
Insecticidal Activity of Cinnamon Essential Oils, Constituents, and (E)-Cinnamaldehyde Analogues against Metcalfa pruinosa Say (Hemiptera: Flatidae) Nymphs and Adults
Kim, Jun-Ran ; Jeong, In-Hong ; Lee, Young Su ; Lee, Sang-Guei ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 375~382
DOI : 10.5656/KSAE.2015.10.0.056
The insecticidal activity of the constituents of cinnamon essential oils and structurally related compounds against both the nymphs and adults of the citrus flatid planthopper Metcalfa pruinosa was examined using a direct-contact application. The toxicity of the cinnamon oil constituents and 21 (E)-cinnamaldehyde related compounds regarding the nymphs of M. pruinosa was evaluated using a leaf-dipping bioassay. Based on 24 h
values, hydro-cinnamic acid (
) is the most toxic compound, followed by geranic acid (
values of 11 of the compounds including cinnamaldehyde are between
. Low toxicities and no toxicity were observed with the other 15 (
) and two compounds, respectively. Also, the toxicities of the cinnamon oil constituents and 21 cinnamaldehyde related compounds regarding the M. pruinosa adults were evaluated using a direct-spray method. The toxicity of eugenol (10.81 mg) is the most toxic compound for the adults of M. pruinosa, followed by geranic acid (30.68 mg). The
values of nine of the compounds including cinnamaldehyde are between 59.16 mg and 96.70 mg. Low toxicities and no toxicity were observed with the other 15 (105.44 mg to 255.76 mg) and three compounds, respectively. The spray formulations that comprise cinnamon bark and cinnamon green leaf oils resulted in 82.3% and 82.9% mortalities, respectively, toward the M. pruinosa adults in a ginseng field. Global efforts to reduce the level of highly toxic synthetic insecticides in agricultural environments justify further studies on cinnamon oils to ascertain whether the corresponding active principles can act as insecticides, when they are applied as a direct spray with contact action, for the control of M. pruinosa populations.
Timing of Diapause Induction and Number of Generations of Helicoverpa armigera (Hüber) (Lepidoptera: Noctuidae) in Suwon, Korea
Jung, Jin Kyo ; Seo, Bo Yoon ; Park, Chang-Gyu ; Ahn, Seung-Joon ; Kim, Ju Il ; Cho, Jum Rae ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 383~392
DOI : 10.5656/KSAE.2015.10.0.057
We investigated the induction of pupal diapause and number of generation for H. armigera using outdoor rearing and sex pheromone trapping in Suwon, Korea. Over-wintering pupae were induced when neonate larvae were reared in the outdoors from late Aug. to early Oct. in 2013 and 2014. H. armigera adults emerged from late May to early Jun. for 2013 colonies and from late May to late Jun. for 2014 colonies. The colonies placed after mid September produced only diapause pupae, to show environmental conditions that day-lengths on the rearing start date were 11 h 49 min~12 h 24 min, and mean temperatures before pupation were
. Summer diapause was not observed in all colonies. The peak occurrence of H. armigera adults from sex pheromone trap in Suwon and Hwaseong were pooled and showed four generations (1st: from late Apr. to mid Jun., 2nd: from mid Jun. to late Jul., 3rd: from mid Jul. to late Aug., 4th: from late Aug. to mid Oct.). A degree-day model for development of H. armigera developed by Mironidis and Savopoulou-Soultani (2008) was used to validate the number of generation from field observations using pheromone traps. The 3rd and over-wintering generations were mainly overlapped. It was decided that H. armigera has one over-wintering and three complete generations in a year, and diapause is induced from offsprings of the 3rd and 4th generations adults. It is expected that larvae of the 1st and 2nd generations give a damage to ear zone in maize fields in which have been planted during April.
Reproduction and Parasitization Capacity of an Insect Parasitic Mite, Pyemotes moseri Yu et Liang (Acarina: Pyemotidae) New to Korea
Kim, Se-Jin ; Lee, Jong Ho ; Yang, Chang Yeol ; Kang, Taek-Jun ; Cho, Myoung Rae ; Hong, Ki-Jeong ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 393~400
DOI : 10.5656/KSAE.2015.11.0.066
An insect parasitic mite was found on a larva from Japanese apricot seed. The mite was identified as Pyemotes moseri Yu et Liang (Acarina: Pyemotidae) new to Korea. The host larva was identified as Eurytoma maslovskii using mitochondrial DNA sequencing analysis. We conducted preliminary study on its reproduction and parasitization capacity in laboratory condition. A mated female mite reared on Eurytoma maslovskii larva. We counted and sexed newborn progenies and then eliminated them during periodical observations. To test parasitization capacity, a PCR tube containing mass reared P. moseri and Japanese apricot seeds (assumed bear larva of E. maslovskii) placed in a stainless bath filled with potting soil. One month later, we surveyed the seeds whether the E. maslovskii larva parasitized by mite or not. We repeated this experiment three times with five replications each. Average life span (days from parasitization to the end of reproduction) of gravid females was 24.4 days (n
Sequential Sampling Plan for Aphis gossypii (Hemiptera: Aphididae) based on Its Intra-plant Distribution Patterns in Greenhouse Cucumber at Different Growth Stages
Chung, Bu-Keun ; Song, Jeong-Heub ; Lee, Heung-Su ; Choi, Byeong-Ryul ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 401~407
DOI : 10.5656/KSAE.2015.10.0.046
This study describes the development of a method for monitoring Aphis gossypii in greenhouse cucumber fields that was used during 2013 and 2014. The dispersion pattern of A. gossypii was determined by commonly used methods: Taylor`s power law (TPL) and Iwao`s patchiness regression (IPR). The sample unit was determined by linear regression analysis between mean density of sample unit versus whole plant. The optimum sample unit for different plant growth stages was two leaves (median and the lowest + 1 leaf) when the total number of leaves was less than nine, and three leaves (4th, 7th from canopy, and the lowest +1 leaf) when the total number of leaves was greater than nine. A. gossypii showed an aggregated distribution pattern, as the slopes of both TPL and IPR lines were greater than 1. TPL provided a better description of the mean-variance relationship than did IPR. The slopes and intercepts of TPL and IPR from leaf samples did not differ between the surveyed years. Fixed precision levels (D) for a sequential sampling plan were developed using Green`s and Kuno`s equations based on the number of aphid in a leaf sample. Green`s method was more efficient than Kuno`s to stop sampling. The number of samples needed to estimate the density of A. gossypii increased at higher D levels and lower mean densities. The cumulative number of aphids needed to stop sampling increased at higher D levels and with fewer plants sampled. Thus to estimate 10 aphids per leaf, 13 plants needed to be sampled, and the cumulative number of aphids to stop sampling was 131.
Prediction of Market Segment for Ptecticus tenebrifer Experience Programs in Accordance with Insect Experience Orientation
Yang, Jong-Im ; Hwang, Dae-Yong ; Lee, Jung-Kyu ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 409~417
DOI : 10.5656/KSAE.2015.10.0.065
This study aimed to summarize the characteristics of visitor experience for different market segments based on insect experience orientation in order to develop Ptecticus tenebrifer (Diptera: Stratiomyidae [Walker]) experience programs using local resources in the insect industrial market. A total of 325 effective samples were collected, and the attributes of insect experience orientation were connected to education, emotion, society, and ego. The survey respondents were students and parents of school-age children. Cluster analysis showed that the respondents were classified into two or three groups that were all found to be high in the prediction validity and discriminant analysis. Based on this result, the respondents were properly subdivided into three clusters for final analysis. Those three groups were: the passive group, the moderate group, and the active-orientation group. As a group aiming for various insect experiences, the active-orientation group consisted of parents whose children range in age from either 5 to 9 or from 10 to 14. This group was willing to spend 7 ~ 8,000 won on each experience program, and they preferred emotional experience programs. The passive and moderate orientation groups were most interested in having an educational experience. In order to increase people`s interest in experience programs, education-oriented programs should be developed and promotional marketing should be reinforced. The results and implications of this study may be useful for the development of insect experience programs that can meet various visitor experience orientations as basic data that can contribute to the vitalization of the 6th industrialization plan for the insect industry.
Rice Stripe Virus (RSV) Acquisition and Infection Rates According to Wing Form, Sex and Life Stage of Small Brown Planthopper (Laodelphax striatellus)
Yi, Hwi-Jong ; Kang, Mi-Hyeong ; Choi, Man-Young ; Koo, Hyun-Na ; Kim, Gil-Hah ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 419~423
DOI : 10.5656/KSAE.2015.11.0.069
Small brown planthopper (SBPH), Laodelphax striatellus, gives a lot of damage to the rice by insect vector of rice stripe virus (RSV). This study compared the RSV acquisition and infection rates according to wing form, sex, and life stage of SBPH. The RSV acquisition rate in macropterous and brachypterous was 60.7% and 63.1%, respectively. The RSV acquisition rate by sex was 61.9% in female and 52.2% in male. However, there was no difference in significance. The RSV acquisition rate of nymphs and adults was 51.2% and 58.7%, respectively. The RSV infection rate by wing form was 53.3.% in macropterous and 48.2% in brachypterous. According to life stage, nymphs was 38.2% and adults was 42.6%. There was no difference in significance. On the other hand, female and male of RSV infection rate was 50.5% and 22.3%, respectively. There was a significant difference. Additionally, developmental periods of SBPH by RSV infection, the longest when inoculated with RSV-infected SBPH in healthy rice, while the shortest when inoculated healthy SBPH in healthy rice.
A New Discovery of Termitophilous Tribe Rhyparini Schmidt, 1910 (Coleoptera: Scarabaeidae) from the Korean Peninsula based on Rhyparus azumai azumai Nakane, 1956
Choi, Ik Je ; Kim, Sang Su ; Lee, Bong Woo ; Lim, Jongok ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 425~429
DOI : 10.5656/KSAE.2015.10.0.045
A termitophilous tribe, Rhyparini Schmidt, 1910 of the subfamily Aphodiinae Leach, 1815 (Coleoptera: Scarabaeidae) is newly recorded from Korea for the first time, based on Rhyparus azumai azumai Nakane, 1956. A redescription, illustrations of diagnostic characteristics including male genitalia, and a key to Korean tribe of the subfamily are provided.
Predicting the Occurrence of Generation for Riptortus pedestris (Fabricius) Using Their Body Color
Lee, Hyoseok ; Jung, Jong-Kook ; Im, Jae Seong ; Park, Marana ; Lee, Seunghyun ; Lee, Joon-Ho ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 431~435
DOI : 10.5656/KSAE.2015.11.0.072
Riptortus pedestris (Fabricius) is one of the important insect pests of leguminous crops, which occurs in most areas of South Korea. It is hard to distinguish each generation in crop fields since not only the longevity of adult R. pedestris is long but also the developmental period is short. Especially, the 2nd generation adults cause enormous damage to soybean while the occurrence time is synchronized with the podding stage of soybean. Controlling the 1st generation of R. pedestris helps to decrease the damage by decreasing the 2nd generation density. This study was conducted to distinguish between the 1st generation and the overwintering generation by using differences in body coloration which is dependent on the day-length during the nymph stage. In addition, the difference was verified by the population dynamics model of R. pedestris. The occurrence time of 1st generation adults could be considered when the summer form is 20% or more. These results will be used for beneficial management decisions to reduce the 2nd generation population.
Predatory Capability of Chilocorus kuwanae (Silvestri) (Coleoptera: Coccinellidae) for Saissetia coffeae (Walker) (Hemiptera: Coccidae)
Jin, Hye Young ; Ahn, Tai Hyeon ; Lee, Bong Woo ; Jun, Hye Jeong ; Lee, Jun Seok ; Park, Jong Kyun ; Ham, Eun Hye ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 437~442
DOI : 10.5656/KSAE.2015.10.0.055
This study, examined Chilocorus kuwanae for biological control of Saissetia coffeae. We measured basic developmental characteristics of C. kuwanae and its capability to prey on the second-instar larvae of S. coffeae by indoor breeding under the following conditions:
, and day length 16L : 8D. The average daily consumption of the second-instar larvae of S. coffeae by C. kuwanae adults was approximately 77.5 larvae/day, which was significantly 2.8 and 2.9 times higher than consumption by Chrysoperla carnea and Cryptolaemus montrouzieri, respectively. During the nymphal period, C. kuwanae consumed a total of 659.0 second-instar larvae of S. coffeae. The interaction between C. kuwanae and the second-instar larvae of S. coffeae varied according to their densities, with the increase in C. kuwanae consumption rate noted to decelerate and gradually level off at the maximum, rsembling Holling`s Type II functional response. Duration of egg to adult development varied from 21.1 days to nearly 27.9 days at temperatures of
. Hatchability, pupation rate, and adult emergence were greater than 72.3%, 77.8% and 83.3%, respectively.
Attractant Effect of Trap Logs Treated with Ethanol to Platypus koryoensis (Coleoptera: Platypodidae)
Son, Su-Yeon ; Lee, Sun Keun ; Seo, Sang-Tae ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 443~448
DOI : 10.5656/KSAE.2015.11.0.067
The attractant effect to Platypus koryoensis (Murayama), an insect vector of Korean oak wilt disease, was determined using a multi-funnel trap and trap logs treated with ethanol and ethanol extract of the bark of the Mongolian oak Quercus mongolica (Fisher). The number of entrance holes in ethanol and bark ethanol extract treatments was higher than that in the control (blank bottle). However, the number of entrance holes in ethanol and bark ethanol extract treatments was not significantly different. The number of entrance holes in the logs increased with increase in diameter of the logs. The lower part of the trap logs had significantly more number of entrance holes than that in the upper part (p < 0.05). The lower part of trap logs tends to be rarely exposed to direct sunlight resulting in desiccation of the logs, which in turn provides good conditions for microbial growth, a food source for P. koryoensis. The results show, that ethanol could be used effectively in the monitoring and maintenance of P. koryoensis because of the cheaper cost of ethanol than bark ethanol extracts, and thus, having a higher economical advantage. Further research of oak bark ethanol extracts is necessary to improve its efficiency.
New record of Caliothrips tongi (Thysanoptera: Thripidae) in Korea
Lee, Gwan-Seok ; Lee, Wonhoon ;
Korean journal of applied entomology, volume 54, issue 4, 2015, Pages 449~454
DOI : 10.5656/KSAE.2015.11.1.071
A panchaetothripine species Caliothrips tongi Mound et al., 2011 is recorded in Korea for the first time. The species was previously known only from the southern China. C. tongi were widely collected from several regions of Korea, causing severe damage to the leaves of Lactuca indica L. (Compositae).