This study was carried out to confirm the predatory and developmental features of N. stenoferus. We determine the host range of N. stenoferus. As a result, it was confirmed that Aphis gssypii, Myzus persicae, Planococcus citri, and Frankliniella occidentalis. N. stenoferus is thought to be able to feed on other micro pests. The test for a developmental period of N. stenoferus at 25℃ showed that the egg period was about 10 days. The nymphal period was about 18 days. Each nymphal period from 1st instar to 3rd instar nymphs was about 3 days. And the nymphal period of 4th and 5th were about 3.5 and 6 days, respectively. The female adult laid eggs in stem tissue or on leaves, and sometimes on the soaked cotton for water supply.

• Soon Sung Hong(Gyeonggi-do Agricultural Research and Extension Services)
• Eun hye Ham(Osang kinsect Co., Ltd)
• Sunghoon Jung(Chungnam National University)
• Junggon Kim(Chungnam National University)
• Jaekook Park(Chungnam National University)
• Hong-Yul Seo(National Institute of Biological Resources)
• A Young Kim(National Institute of Biological Resources)
• Jieun Hwang(Gyeonggi-do Agricultural Research and Extension Services)
• Jae Eun Jang(Gyeonggi-do Agricultural Research and Extension Services)
• Gab June Lim(Gyeonggi-do Agricultural Research and Extension Services)
• Jingu Lee(Gyeonggi-do Agricultural Research and Extension Services)
• Seung-Hwan Yun(Gyeonggi-do Agricultural Research and Extension Services)