Results of recent field studies on clearwing moths (Sesiidae) of the Philippine Islands are presented. A new genus, Scoliokona gen. nov., type species Sura tetrapora Diakonoff, 1968, and six new species are described: Cyanosesia treadawayi sp. nov., Cyanosesia meyi sp. nov., Trilochana illustris sp. nov., Melittia ferroptera sp. nov., Scoliokona heptapora sp. nov. and Nokona palawana sp. nov. are described. The following new combinations are provided: Cyanosesia pelocroca (Diakonoff, 1968), comb. nov. and Nokona heterodesma (Diakonoff, 1968), comb. nov. One species Melittia callosoma Hampson, 1919 is redescribed and reported for the Philippines and Sulawesi, Indonesia, for the first time. Further new faunistical data are presented for Trilochana triscoliopsis Rothschild, 1925, Melittia gorochovi Gorbunov, 1988, Melittia javana Le Cerf, 1916, Scoliokona tetrapora (Diakonoff, 1968), Sura cyanolampra Diakonoff, 1968 and Nokona heterodesma (Diakonoff, 1968). Additionally the recently described Cyanosesia philippina Gorbunov & Kallies, 1998 is figured.