• Korean journal of applied entomology
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• v.50 no.1
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• pp.75-77
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• 2011

Two species of the genus Andaspis, Andaspis crawii (Cockerell) and Andaspis kashicola (Takahashi) are newly recorded in the Korean fauna of armored scales (Diaspididae). A key to species of Andaspis, illustrative photographs and information on the distribution and hosts of each species, are also provided to identify the specimens of Andaspis collected in Korea.

• Korean journal of applied entomology
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• v.42 no.1
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• pp.15-20
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• 2003

Five species of the genus Aulacaspis (Sternorrhyncha, Diaspididae) from Korea were redescribed and illustrated for the morphological characters of adult females with the information of known host plants. Among them, Aulacaspis spinosa (Maskell, 1897) is reported for the first time from the Korean Peninsula. A key to species is given for the adult females.

• Korean journal of applied entomology
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• v.52 no.1
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• pp.63-67
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• 2013

One species of the Duplachionaspis, D. divergens (Green, 1899) is newly recorded in the Korean fauna of armored scales (Diaspididae). The characters of this genus and species are here redescribed from Korean specimens. A key to species of Duplachionaspis from the East Palaearctic Region, photographs and information on the distribution and hosts of this species, are also provided.

• Korean journal of applied entomology
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• v.54 no.2
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• pp.115-119
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• 2015

Four species of aphelinids from Unaspis euonymi (Comstock) infesting Japanese spindle (Euonymus japonicus Thunb. (Celastraceae)) leaves and twigs were collected and identified as Ablerus perspeciosus Girault, Encarsia citrina (Craw), Marietta carnesi (Howard) and Pteroptrix machiaveli (Girault). Of these, Pteroptrix machiaveli (Girault) is newly documented in the Korean fauna of Aphelinidae. Brief diagnostic criteria and illustrative photographs of these species are provided and there is information on the distribution and hosts of each species as well.

• Korean journal of applied entomology
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• v.48 no.3
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• pp.281-284
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• 2009

Seventy two species of armored scale have been recorded from the Korean peninsula since late 1920s. Nine of these species were obtained from greenhouses. Of these 9 armored scale species, 7 species are considered to have failed to colonize fields or greenhouses and 2 species, which were collected from pineapple plants, Tillandsia plants and cactus trees in greenhouses, were never taken from the exterior environment.

• Korean Journal of Environment and Ecology
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• v.24 no.5
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• pp.611-616
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• 2010

To explore on the defense strategies against hervivory of broadleaved tree species growing in tropical rain forest, Solomon Islands, morphological characteristics of the leaf, leaf domatia structure and the number, herbivores insects and mites on the leaves of 26 tree species, collected from the trees growing in Guadalcanal, New Georgia, and Tetepare islands, were investigated from Feb. 25 to March 5, 2010. The results are summarized as follows. Six tree species including Terminalia catappa(23.08%) among total 26 species have domatia structure. Especially, domatia of T. catappa reveals two types; pouch type and pit+tuft type. Predatory mites are observed on the leaves of only three species including T. catappa. Predatory mites' number per leaf or leaflet proved a few, 0.33~0.40. Insect pests destroying the leaf of tree species are such as aphids, Diaspididae sp., larva of Lepidoptera, and Eriosoma sp.(Pemphlogidae). Ants are co-works with aphids and Diaspididae sp., and supports herbivores. These results indicate that protective mutualisms between tree and predatory mites may be less frequent in woody species of tropical rain forest in Solomon Islands.

• Korean journal of applied entomology
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• v.44 no.3 s.140
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• pp.231-235
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• 2005

This study was conducted to obtain the optimal spray time for Pseudaulacaspis prunicota (Maskell) (Homoptera: Diaspididae) in early seaon in Jeju. Oviposition time of overwintered females and activity of hatched nymphs of P. prunicola were monitored, and the phenology data were compared with the outputs estimated by a degree-days model of P. pentagona (Targioni-Tozzetti)). Overwintered females of P. prunicola began to lay eggs from mid to late April, and the eggs started to hatch from early May followed by the active migration of the hatched nymphs during mid May. The phenological events of P. prunicola in early season were likely comparable with those of P. pentagona reported in southern Korea and in central Japan. A degree-day model, which predicts the proportion of >50% hatched egg batches of P. pentagona (y=1[exp(-(-a+bx))]; y, proportion; x, degree-days based on $10.5^{\circ}C$ from 1 January; a=-18.80 and b=0.073), accurately described the migration time of P. prunicola hatched nymphs. Thus, it is considered that the degree-day model can be used for predicting the optimal spray time for P. prunicola in early season.

• Korean journal of applied entomology
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• v.51 no.1
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• pp.73-77
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• 2012

Two pupillarial species, $Cryptoparlatorea$ $leucaspis$ Lindinger and $Fiorinia$ $japonica$ Kuwana, are recorded for the first time in Korea. Both species were found on coniferous trees, $Cryptomeria$ $japonica$ and $Torreya$ $nucifera$. Also an identification key, brief diagnoses, and photographs of Korean pupillarial species are provided to assist in their identification.

• Korean journal of applied entomology
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• v.52 no.1
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• pp.29-33
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• 2013

The fecundity of summer generation adults of arrowhead scale, Unaspis yanonensis (Kuwana) (Hemiptera: Diaspididae), was examined at constant temperatures. The total fecundity increased up to $29^{\circ}C$ and declined thereafter. Total fecundity reached a maximum of 254.5 eggs (crawlers) per female at $29^{\circ}C$. Females showed periodic oviposition activity but the pattern differed with temperature. Three or more oviposition cycles were occurred at 25 and $29^{\circ}C$. At the other temperatures, the 2nd oviposition cycle was reduced or obscure. And oviposition cycle after the 2nd cycle was not obvious at low or high temperatures. The fecundity of the 1st cycle was significantly different according to temperature, showing higher fecundity at 25 and $29^{\circ}C$. Fecundity after 1st cycle at 13, 17 and $21^{\circ}C$ were lower than at 25 and $29^{\circ}C$. The sex ratios of hatched nymphs in terms of female : male in 13, 17, 25, 29 and $33^{\circ}C$ were 1 : 0.48, 1 : 4.79, 1 : 2.48, 1 : 1.85 and 1 : 0.56, respectively.

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