Notogomphus praetorius is a species of dragonfly in the family Gomphidae; common names include yellowjack, southern yellowjack and yellowjack longlegs.
Southern Africa: Widespread in eastern South Africa, eastern Zimbabwe, Zambia, and the southern part of the Democratic Republic of the Congo. Also recorded in Namibia, Angola, Malawi and Mozambique.
Found in and near streams and rivers, both in forests and grasslands; mostly in highlands.