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Ecology and Restoration of Endangered species, Lethocerus deyrollei (Vuillefroy) (Hemiptera: Belostomatida)
The giant water bug, Lethocerus deyrollei which is the largest aquatic insect in Korea, has been designated as an endangered species by the Ministry of Environment of Korea since 1997 and is also recorded as “Vulnerable” on red Data Book of Japan (Japan Environment Agency, 2000). The populations of L. deyrollei have decreased dramatically in Korea because of loss of wetland habitats, road kill and artificial lighting. Since 2007 Holoce Ecosystem Conservation Research Institution (HECRI) has been reared L. deyrollei through breeding in captivity and 90 pairs individuals were released from 2012 to 2013. On the basis of previous field monitoring which was considered sufficient food such as fish, tadpoles and frogs and emergent plants such as Phragmites communis, Phragmites japonica, Typha angustifolia and Acorus calamus, Hyeon-cheon(E128°09’38“, N37°30’23“, 556m) was selected as a release site. After release on July 16, 2013 and carried out monitoring twice. We observed several egg clusters on July 25 and 1st larvae on July 30 respectively. Hyeon-cheon seems to be appropriate and expected to be as a major natural wet habitats for L. deyrollei.
