During Project Wallace, an entomological expedition to the Dumoga-Bone National Park in northern Sulawesi, special attention was paid to the Odonata. Although the dragonfly fauna of Sulawesi is still imperfectly known, at least 143 species have been recorded up to now. The absence of Platycnemididae and Euphaeidae is notable; Protoneuridae are rare contrary to islands West as well as East of Sulawesi. The fauna of the Dumoga-Bone National Park includes approx. half of the species recorded from Sulawesi. — Some notes on the ecology of the species are given. It appears that all species confined to primary forest are endemic to Sulawesi, while nearly all species of secondary biotopes are widely distributed in Southeast-Asia. The fauna of the larger rivers takes an intermediate position for this aspect.