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Review of mites of Mesostigmata in Korea
Eunsun Keum,Chuleui Jung 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
Mesostigmata is an important predaceous mite groups in various ecosystems and considered as an Order of Subclass Acari, Superorder Parasitiformes. Among the Suborders, Sejida, Trigynaspida, Monogynaspida, Heterozerconina and Gamasina, we list 35 families and 309 species from Korea. Some of the species were newly added to the Korean fauna. It includes mites from soil, litter, compost, snake, birds and some animal habitats, but the majority is from soil. Some of them are widely used biocontrol agents of spider mites, insects and nematodes.
Keum, Eunsun,Jiwon Kim,Chuleui Jung 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.05
Soil microarthropods play important role in soil food web and contribution the nutrient cycling and soil system health. Among diverse taxa, gamasid mite Acari: Gamasida) is considered as a top predator group in soil ecosystem. We compared the soil microarthropod communities focused on gamasid mite species composition. Soil samples were collected Mt. Cheonju in bukmyeon, Changwon-si, Gyeongsangnam-do. On the mountain hill, contagious pine tree (Pinus densiflora) and oak tree (Quercus acutissima) stand were sampled while the bamboo tree (Phyllostachy bambusoides) stand is located in ap. 200m below from the mountain hill. Soil microarthopods abundance was high in bamboo and pine tree stand, but lower in oak tree stand. The dominance order was oribatid mite, collembolan and gamasid mites in pine tree stand, oribatid mite, insects, and gamasid in oak tree stand while in bamboo stand, oribatid mites were out numbered (75%) followed by collembolan. Collected gamasid mites were 146 individuals and 34 species. Species richness and diversity was highest in oak tree stand and lowest in bamboo stand. Cluster analysis showed highest similar in pine-oak stand to bamboo stand. Dominant species were Holaspina dentatus (Parholaspididae) in pine stand, Gamasus fujisanus, Veigaia sp in oak stand, and Gamasus fujisanus in bamboo stand.
Eunsun Keum,Chuleui Jung,Gen Takaku,Kangwon Lee 한국응용곤충학회 2014 한국응용곤충학회 학술대회논문집 Vol.2014 No.04
Phoretic mites were collected from Copris ochus and C. tripartitus (Coleoptera: Scarabaeidae). These beetles were collected from Holoce Ecosystem Conservation Research Institution, Gangwon-do. Five unrecorded species of Eviphis hastatellus Berlese, 1910 (Eviphididae), Holostaspella scatophila Takaku, 1994 (Macrochelidae), Macrocheles japonicus Evans & Hyatt, 1963 (Macrochelidae), Pachylaelaps siculus Berlese, 1921 (Pachylaelapidae) and Parasitus consanguineus Oudemans & Voigts, 1904 (Parasitidae) were recorded from Korea for the first time. However, Parasitus consanguineus Oudemans & Voigts (Parasitidae) was already recorded by Oudemans & Voigts in 1904 but since then no one has recorded. We have rerecorded this species in Korea.
Eunsun Keum,Mingu Kang,Chuleui Jung 한국환경생물학회 2015 환경생물 : 환경생물학회지 Vol.33 No.2
The Mesostigmata is an order of Subclass Acari either parasiting to diverse invertebrates or free-living predatory in terrestrial ecosystem. Phoresy is one of the unique behaviors of wingless arthropod dispersal by attaching winged arthropods. We collected mites attached on the dorsal part of abdomen adult sciarid fly, from mushroom culture. The mites were identified as Arctoseius cetratus Sellnick, 1940 in the family of Ascidae. Arctoseius cetratus has short J2, Z1, Z2, and S1, S2 setae, not reaching the bases of following setae. Posterior half of dorsal shield with longitudinal garland of puncta between J and Z setae, peritremes extending anteriorly to midlevel of coxaⅡ. The genus Arctoseius and species Arctoseius cetratus are the first record in Korea. We provided the detail description of the species including the identification key in the family with some ecological notes.
Description of new record Phytoseiid Mite, Neoseiulus harrowi (Collyer, 1964) in Korea
Eunsun Keum,Chuleui Jung 한국응용곤충학회 2014 한국응용곤충학회 학술대회논문집 Vol.2014 No.10
The Seoul forest of urban forest park is provide places for relaxation and feeling naturally use inside the city. This study was conducted for investigating diversity of soil microarthropods for Bioblitz. Samples were collected from rose of Sharon in soil. This species was identified as N. harrowi (Collyer), described originally from New Zealand and Austrilia. This is the new record of N. harrowi in Korea. The morphological features of these two species are closely related to each other (N. makuwa (Ehara) and N. harrowi (Collyer)). So, we compared features of this species. Dorsal setae of N. harrowi are generally longer than in N. makuwa. Two posterior seta (Z4, Z5) of N. harrowi are much shorter than in the N. makuwa. In addition, there are some differences in the shape of the spermatheca, the forked atrium is larger in N. makuwa than in the N. harrowi.
Eunsun Keum,Chuleui Jung 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.10
Gamasid mites are top predators and occupy a central position of the soil food web in the forest ecosystem. This study investigated the soil dwelling gamasid mite community during 8-9 years after the massive mountain fire which occurred in April 2000. Total of 11 families, 44 species and 943 individuals were found. Abundance and species richness of soil gamasid mites was high in less fire-impacted sites (C2 and T3) including unburned control site (Con) than in severely impacted sites (T1 and T2). Genus Holaspina comprised 40-84% of the total abundance of gamasid mites indicating the group may play the key role in soil food web. Dominant species of gamasid mite was H. alstoni, H. communis, H. dentaus, H. ochraceus, H. trifucatus of the Genus Holaspina 5 species in all sites. Some detail biological information was pursued in this group. After 8-9 years from the massive fire, it was noted that the soil gamasid mite communities were recovered from the less severely burned sites but not from the severely burned sites.
Survey of alien species of Dasineura jujubifolia Jiao & Bu, 2017 (Diptera: Cecidomyiidae) from Korea
Eunsun Keum,Kyoung-Yeon Cho,Heung-Sik Lee,Deuk-Soo Choi 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10
Dasineura jujubifolia was introduced into Korea for the first time in 2011, a gall midge feeding on jujube (Ziziphus jujuba Miller (Rhamnaceae)). Since then the jujube gall midge become a serious insect pest of Jujube in Korea. In this year, we surveyed regulated and alien insect pests by collecting damaged leaf samples from different regions in Korea. Jujube gall midge and its life stage were identified by morphological and genetic characteristics. For molecular identification, we analyzed the cytochrome c oxidase subunit I (COI) sequences of pest. In this study, we report the morphological description and genetic information of D. jujubifolia.
A new record of Antennoseius avius (Karg, 1976) (Acari: Mesostigmata; Ascidae) from Korea
Keum, Eunsun,Kaczmarek, Sławomir,Jung, Chuleui The National Institute of Biological Resources 2016 Journal of species research Vol.5 No.3
Mites of the genus Antennoseius of family Ascidae are free-living soil predator mostly observed on the open grass field. In Korea, only two species, Antennoseius imbricatus Ishikawa, 1969 and A. japonicus Ishikawa, 1979 were reported in 1990s. Recent series of soil acarine biodiversity survey in Gyeongbuk province during 2009-2015. We recovered a new record of Antennoseius avius (Karg, 1976) to Korean inventory from riparian grassland. Detailed description of the species as well as the identification key to the genus and species were provided.
Keum, Eunsun,Jung, Chuleui The National Institute of Biological Resources 2017 Journal of species research Vol.6 No.no.spc
During a study of acarine biodiversity, a phytoseiid mite was collected from soil samples under the rose of Sharon plants. The specimen was identified as Neoseiulus harrowi Collyer, 1964, which was previously only reported in New Zealand and Australia, and is thus a new record for Korean phytoseiid fauna. Neoseiulus harrowi is morphologically similar to N. makuwa (Ehara), but distinctly different in two characters: shorter length of two posterior setae (Z4, Z5) and a forked atrium of spermatheca longer in N. makuwa than in N. harrowi in females.