Four new species of Calosima Dietz, 1910 (Holcocerini); Calosima albafaciella, C. albafasciata, C. malikuli, and C. moriutii are described from Thailand. Photographs of the imagos and illustrations of the male and female genitalia are provided as available.

• Adamski, David(Department of Systematic Biology, National Museum of Natural History, Smithsonian Institution)