Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Report on Zorka sp. (Homoptera: Typhlocybinae) as a Pest of Persimmon (Diosprosi kaki) in Korea

감나무애매미충, Zorka sp. (매미목: 애매미충아과)에 의한 감 (Diosprosi kaki) 피해 보고

  • Hwang, In-Cheon (Central Research Institute, Kyung-Nong) ;
  • Lim, Tae-Heon (Research Institute of Agri-Bio Science, Samhoub) ;
  • Lee, Suk-Jun (Division of Applied Life Science(BK21), Gyeongsang National University) ;
  • Park, Chung-Gyoo (Division of Applied Life Science(BK21), Gyeongsang National University) ;
  • Choo, Ho-Yul (Division of Applied Life Science(BK21), Gyeongsang National University) ;
  • Lee, Dong-Woon (Department of Applied Biology, Kyungpook National University)
  • 황인천 ((주)경농 중앙연구소) ;
  • 임태헌 ((주)삼호유비) ;
  • 이석준 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 박정규 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 추호렬 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 이동운 (경북대학교 생물응용학과)
  • Published : 2009.12.30
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Abstract

A leafhopper, Zorka sp. was collected from a persimmon (Diospyrosi kaki, cv SangjuDungsi) orchard in Sangju, Gyeongsangbuk-do, Korea on 15 June, 2008. This leafhopper gave a serious damage to persimmon leaves, being a new pest to persimmon. This leafhopper was tentatively identified as Zorka sp., which has not been recorded in the science. White spots of <1mm-circle occurred around the vein of damaged leaves. Most part of leaf was turned to white when heavy infection occurred. The first symptom occurred from 4 days after introduction of Zorka sp. (4 adults/persimmon leaf). We investigated the occurrence of Zorka sp. in the persimmon orchards in Korea from 2008 to 2009. Total 143 orchards from 11 cities in 6 provinces were observed from July to August. The damage caused by Zorka sp. was found in 22 orchards (15.4%) of the investigated. According to locality, 40.7% of orchards were damaged in Yeongdong, Chungcheongbuk-do and 33.3% in Wanju, Jeollabuk-do. However, no damage was observed from the orchards in Gyeongsangnam-do and Jeju-do, south part of Korea. Especially, 9 of 11 orchards in Youngdong were located close to grapevine yards.

2008년 6월 15일 경북 상주의 상주둥시 감나무 (Diospyrosi kaki)에서 매미충이 채집되었다. 매미충은 감나무 잎에 심각한 피해를 주고 있었으며 Zorka속의 신종으로 확인되었다. 피해 잎은 앞면쪽에 1 mm 이하의 흰색 반점이 엽맥 주위부에 형성되었고, 피해가 심해지면 잎 전체에 반점이 형성되었다. 엽당 4마리 밀도로 접종 시 4일 후부터 피해 흔적이 확인되었다. 2008년과 2009년 6월에서 8월 사이 6개도 11개 시 군 감나무 과원에서 Zorka sp.에 의한 피해지역을 조사하였다. 조사과원 중 15.4%인 22개 과원에서 피해가 확인되었다. 충북 영동지역에서는 40.7%의 과원이 피해를 받고 있었고, 전북 완주지역에서는 33.3%가 피해를 받고 있었다. 반면 남부지역인 경남과 제주지역에서는 피해 과원이 없었다. 피해과원이 많았던 충북 영동지역의 경우 11개 피해 과원 중 9개 과원이 포도밭과 인접해 있었다.

Keywords

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