• Korean journal of applied entomology
• /
• v.42 no.3
• /
• pp.269-277
• /
• 2003

Some species of true bugs have become serious problems in rice, upland crops, and tree fruits. It would be meaningful to understand research status by reviewing articles on those true bugs in Korea. Articles on those bugs published in several scientific Korean journals were reviewed, except articles on true bugs on rice plants; CD Part 1 included classification and morphological studies on eggs and larvae of Piesma spp., on external genitalia of Gonopsis affinis, and on spermathecae of some Podopinae and Asopinae species. $\circled2$ Development and growth analysis of Piesma sp., P. maculata, and 2 species of Coreidae were reviewed in part 2. $\circled3$ In part 3 we reviewed with major pest bug species on soybean, sweet persimmon, yuzu, citrus, chrysanthemum, and Cynanchum wilfordii, and insect fauna in mountain areas. $\circled4$ In part 4, damage levels in soybean, sweet persimmon, yuzu, grapes were reviewed. $\circled5$ ID In part 5 we reviewed seasonal occurrence patterns of Halyomorpha halys, Plautia stali, Riptortus clavatus in sweet persimmon orchards, of some species in soybean fields, of Nysius plebejus on chrysanthemum, and of Tropidothorax cruciger on Cynanchum wilfordii. $\circled6$ Chemical control methods in a sweet persimmon orchard, in grapevine yards, in a soybean field, and in a chrythansemum field were introduced in part 6. Some laboratory bioassay on insecticides against R. clavatus were mentioned, too. $\circled7$ Finally in part 7, researches on transmission by Halyomorpha halys and Cyrtopeltis tenuis of micoplasma-like organism which is a pathogen of paulownia withces' -broom to Catharanthus roseus were reviewed.

• Korean journal of applied entomology
• /
• v.36 no.4
• /
• pp.311-316
• /
• 1997

This study was conducted to evaluate the effect of temperatures on the egg and nymphal development andadult longevity of green mirid bug, Cvrtorhinus lividipennis Reuter. In addition, predation on eggs of brownplanthopper, Nilupurvurcz lugens ~t:l and small brown planthopper, L~orlelphux .striatellus Fallen by C.lividipennis were studied at different temperatures. Hatchability of C. lividipennis was about 96% at 23"C,88% at 26"C, 75% at 29$^{\circ}$C and 64% at 32$^{\circ}$C. Egg duration of C. lividipmnis was 1 1.0 days at 23"C, 10.0 at26"C, 6.7 days at 29$^{\circ}$C and 5.6 days at 32$^{\circ}$C. Nymphal duration of C. 1i1~idiperzni.ws as 13.7 days at 23"C,12.7 days at 26$^{\circ}$C. 10.2 days at 29$^{\circ}$C and 9.1 days at 32$^{\circ}$C regardless of food sources. Nymphaldevelopment was the shortest at 4th instar and the longest at 1st instar irrespective of temperatures and foodsources. Adult longevity of C. livirlipennis was was about 22.0 to 23.5 days at 23$^{\circ}$C. 19.0 to 20.0 days at26"C, 16.0 to 17.0 days at 2Y0C, and 1 1.0 to 12.0 days at 32$^{\circ}$C. There was no significant difference in adultlongevities on food sources. Number of eggs comsumed by adult C. lividipennis were about 56 to 61 and 56to 57,56 to 60 and 47 to 49,43 to 46 and 40 to 42, and 28 to 30 and 26 to 27 at 23'C. 20$^{\circ}$C. 29$^{\circ}$C and 32"C,respectively. Egg consumption by adult C. lividiprrznis was slightly higher at female and on N. lugens eggthan at male and on L. striatellus egg. Dail 2.0 to 3.0 eggs were consumed by adult C. lividipc,nni.s.ail 2.0 to 3.0 eggs were consumed by adult C. lividipc,nni.s.

• Korean journal of applied entomology
• /
• v.61 no.1
• /
• pp.51-62
• /
• 2022

Numerous insect pests threaten the Korean orchard industry through feeding on various tissues of fruit trees. Generally, the control of economically important orchard pests is based on the use of chemical insecticides. Owing to growing concerns regarding the environmental and human health effects of insecticides, environment-friendly pest control strategies are urgently needed. Pheromones of orchard pests could lead to an environmentally safe control system based on mating disruption or mass trapping. This review summarizes the functions and compounds of known pheromones from 51 orchard pests in Korea. The pheromones identified to date from 14 species in the families Miridae, Aphididae, Diaspididae, Pseudococcidae, Rutelidae, Cecidomyiidae, and Eurytomidae and 26 species in the order Lepidoptera are female-produced sex pheromones that attract only males. In contrast, all known examples for 11 species in the families Alydidae, Pentatomidae, Thripidae and Cerambycidae are male-produced aggregation pheromones that attract both sexes. Research on pheromones in new pests, kairomones in key orchard pests, mating disruption dispensers to generate prolonged release of the pheromones, and trap design and trap location for mass trapping will be required for the expanded use of pheromones and other semiochemicals in orchard pest management in the future.

• Korean Journal Plant Pathology
• /
• v.10 no.3
• /
• pp.211-214
• /
• 1994

Paulowina witches'-broom mycoplasma-like organism (PWB-MLO) was transmitted experimentally to periwinkle (Catharanthus roseus L.) plant by tobacco leaf bug (Cyrtopeltis tenuis Reuter). Adults of the leaf bugs were allowed to feed on the witch's-broom infected paulownia (Paulownia tomentoas Steud.) trees for three weeks to insure the acquisition of PWB-MLO and then transferred to healthy seedlings of periwinkle and paulownia plants. In 25∼35 days after transfer of the viruliferous leaf bugs, six out of the ten periwinkle plants showed‘little-leaf’symptoms, while the paulowina seedlings remained symptomless. Presence of MLO in the infected periwinkle tissue was diagnosed by fluorescence microscopy and MLO particles were observed under electron microscope, confirming the transmission of PWB-MLO to periwinkle.

• Korean journal of applied entomology
• /
• v.50 no.1
• /
• pp.47-53
• /
• 2011

The seasonal occurrence of Riptortus pedestris Fabricius was investigated using pheromone traps baited with its aggregation pheromone in the fields with various crop composition (mixture culture of barley and hairy vetch in Asan, Chungnam; monoculture of hairy vetch in Yuseung, Daejeon) from mid-May to mid-July of seed gathering season in 2010. The invasion of R. pedestris into the experimental fields began to increase rapidly from late-June in which period hairy vetch and barley reach the beginning of seed formation stage. After seed gathering season in mid-July, the invasion rate of R. pedestris decreased, and the activity was continually observed till early-November. In addition to dominant R. pedestris species, 33 species of hemiptera including Apolyaus watajii, Dolycoris baccarum, Adelphocoris suturalis, and Yemma exlis were collected, which indicated abundant species diversity in the hairy vetch fields. In the laboratory, R. pedestris did not developed successfully to adult stage on food sources of hairy vetch, with decreasing survival rate after 4th instar and the failure of emergence to adult stage. Also, R. pedestris showed higher preference on soybeans than hairy vetch. Consequently, hairy vetch may be not true host for the development and survival of R. pedestris. It is considered that R. pedestris is a temporary visitor at the season of seed formation in hairy vetch fields.

• Korean journal of applied entomology
• /
• v.41 no.2
• /
• pp.91-97
• /
• 2002

This study was conducted to determine the effects of temperature and food onthe nymphal development and adult longevity of the green virid bug, Cyrtorhinus lividipennis Router. Nymphal period was 13.2 to 13.7 days at 24$^{\circ}C$, 10.4 to 10.9 days at 28$^{\circ}C$, and 9.0 to 9.3 days at 32$^{\circ}C$. Number of eggs predated by nymph was 10.6-14.3 at 24$^{\circ}C$, 7.5-9.2 at 28$^{\circ}C$, and 5.8-7.5 at 32$^{\circ}C$. Amount of predation was highest on BPH, followed by SBPH, WBPH, and GLH. Number of nympal moulting was mostly four times (55-75%) followed by three times (25-45%), regardless of temperature and food. Percent emergence rate was 52-70%, 48-66% and 22-38% at 24$^{\circ}C$, 28$^{\circ}C$ and 32$^{\circ}C$, respectively, showing a tendency to decrease with increasing temperature, and was affected by foods. Adult longevity, when supplied with one food, was 19.8 to 22.5 days at 24$^{\circ}C$, 15.6 to 17.0 days at 28$^{\circ}C$, and 10.3 to 11.7 days at 32$^{\circ}C$. There was no significant difference among foods in terms of adult longevity, but it tended to be slightly longer when provided with four foods than with one food. Number of eggs predated by an adult, when supplied with one food, was 35.7-54.2, 31.6-44.6 and 18.1-28.2 at 24$^{\circ}C$, 28$^{\circ}C$ and 32$^{\circ}C$, respectively. It was highest on BPH, followed by SBPH, WBPH and GLH regardless of temperature. Number of egg Predated by an adult, when supplied with four foods, was 4.0-28.9, 2.9-29.0 and 17-13.6 at 24$^{\circ}C$, 28$^{\circ}C$ and 32$^{\circ}C$, respectively, and was significantly different among foods supplied. The results suggest that the significantly different predation amount by adult was due to food preference amoung the different foods.

• Korean journal of applied entomology
• /
• v.58 no.3
• /
• pp.209-218
• /
• 2019

This study was conducted to develop a technology for environmentally friendly control of sweet-potato whitefly, Bemisia tabaci, by controlling their behavior using a push-pull strategy in a tomato greenhouse. B. tabaci was attracted the most by yellow color, light source of 520 nm, whereas it avoided the complex light treatment of 450 + 660 nm. The two natural enemies of B. tabaci, Cyrtopeltis tenuis and Orius laevigatus, were attracted the most by 520 nm light source. B. tabaci was repelled by the volatile organic compounds ocimene and carvacrol and was the most attracted by methyl isonicotinate. When buckwheat was added into the tomato greenhouse, the density of C. tenuis was maintained at about 16 times higher than when untreated for 15 days. As a result of the combined treatment of push-pull strategy, the density per trap of B. tabaci was three times lower than when no treatment was applied, and the control of this pest increased with time and reached up to 68.7%.

• Korean Journal of Environment and Ecology
• /
• v.26 no.5
• /
• pp.682-693
• /
• 2012

This study was intented to understand the insects diversity and forest in DMZ, and provide data and information required to preserve living creatures and geological management, and basic information for the management and preservation policies. This study has surveyed insects diversity by habitat types in Middle Inland of DMZ, Korea from 15 to 19 September, 2009. Totally there were 128 species belonging to 53 families of 10 orders, among them, 7 endermic species, 3 management of exotic species and 25 designated species were showed. The highest was 26 species of Hemiptera(20.31%) and then next turn are 22 species of Coleoptera(17.19%) and 20 species of Hymenoptera(15.63%) respectively. Dominant species are Ceracris nigricornislaeta (Bolivar)(0.152) in S1, Menida violacea Motschulsky(0.218) in S2, Stomorhina obsoleta (Wiedemann)(0.171) in S3, Ducetia japonica (Thunberg)(0.212) in S4, Oedaleus infernalis Saussure(0.178) in S5, Sepedon aenescens Wiedemann(0.268) in S6, Adelphocoris triannulatus (Stal)(0.257) in S7 and Ricania taeniata Stal(0.150) in S8 site. The diversity(H') and richness(RI) of insects at survey area as S2(H'=3.461, RI=9.64), S3(H'=3.457, RI=9.18) and S1(H'=3.447, RI=8.88) were higher than in the others and the lowest in S8(H'=2.790, RI=5.341). But the highest species evenness index(EI) occurred in S8(0.985).

• Korean journal of applied entomology
• /
• v.49 no.2
• /
• pp.97-103
• /
• 2010

In this study, 5 species (Tetranychus kanzawai Kishida, Endoclyta excrescens (Butler), leaf roller caterpillar (Adoxophyes orana Fisher), Anomis mesogona (Walker), and Aulacaspis rosae (Bouche)) were found in Rubus coreanus Miquel in Jeonbuk province, from 2006 to 2008. T. kanzawai appeared in mid-May and showed three peaks in late June, mid-July, and late August. Its density was over 10 adults per leaf. A. mesogona appeared in mid-June and showed two peaks in late July, and early October. Of the 28 insect pests in pre-harvesting, the 7 main species were T. kanzawai, T. urticae, A. orana, Lygocoris lucorum Meyer, Frankliniella intonsa (Trybom), Psylliodes punctifrons Baly and Motschulskyia serrata (Matsumura). Of the 19 insect pests in after-harvesting, the 6 main species were T. kanzawai, E. excrescens, A. mesogona, A. orana, P. punctifrons and A. rosae. Growth of R. coreanus decreased when insect pests were not managed and yields decreased approx. 7% a year. Management of insect pests in field using pesticide was not different.

• Korean Journal of Agricultural Science
• /
• v.9 no.2
• /
• pp.519-539
• /
• 1982

An preliminary study was made with special references on the insect fauna of Mt. Gyeryong during the period from mid-May to mid-September 1981. The results were obtained as follows; 1. 673 species of insects within 156 families of 20 orders were identified and listed herewith. 2. The 16 species are first records from Korea : Phaneraptera nigro-antennata (Tettigoniidae : Orthop.), Phraraortes kumamotoensis(Phasmidae : Phasm.), Nesogaster lewisi (Nesogasteridae : Dermap), Polymerus palustris(Miridae : Hemip.), Agrosteomela indica (Chrysomelidae:Col.), Monochimus sparsutus (Cermbicidae : Col.), Oberthiiria ialcigera (Bombycidae: Lep.), Alcis albiiera (Geometridae : Lep.), Proplepsis diazama (G eometridae : Lep.) Pandemis cinnamomeana (Tortricidae : Lep.), Hypenodes squalida (Noctuidae : Lep.), Hypolimnas bolina (Nymphalidae : Lep.), Ctenophora nohirae (Tipulidae: Dip.), Ortalotrypeta isshiki (Trypetidaedae : Dip.), Trypeta artemisicola (Trypetidae : Dip.), Ichneumom 8-guttatus ( Ichneumonidae : Hymenop.). 3. We could find a considerable number of Oriental fauna species, Lepismachilis nipponica, Nezara antennata, Parapolybia varia, Anthophora zonata, Parnara guttata, Byasa alcinous, Eurema laeta, Pieris canidia, Eizera maha, Kaniska canace, Danaus sita including two newly recorded species, Monochimus sparstus and Hypolimnas bolina.