The genus Pachynoa Lederer, 1863 reported 13 species in the world. This genus was established by Lederer, 1863 have been treated within the genera Pitacanda Moore, 1886 by Hampson, 1896 and Hypermeces Turner, 1933 by Shaffer et al., 1996. Species of the genus Pachynoa are mostly distributed from India and Taiwan to Solomon island.
In this study, the genus Pachynoa is newly recorded in Laos with two species, Pachynoa xanthochyta (Turner, 1933) and Pachynoa thoosalis (Walker, 1859). These species are redescribed with illustrations of the adults and the genitalia, and their distribution is updated.

• Jae-Ho Ko(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Ulziijargal Bayarsaikhan(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Sol-Moon Na(Bio-Resource and Environmental Center, Incheon National University)
• Dong-June Lee(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Tak-Gi Lee(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Hyeong-Kyu Kim(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Yeong-Bin Cha(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Chang-Moon Jang(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)
• Yang-Seop Bae(Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea)