Panacela syntropha is a moth in the Eupterotidae family. It was described by Turner in 1922. It is found in Australia, where it has been recorded from Queensland. The wingspan is 26-28 mm for males and about 40 mm for females. The forewings are reddish-grey (in males) to fuscous-grey (in females) with an outwardly curved fuscous line from before the mid-costa to before the mid-dorsum. The postmedian and subterminal lines consist of minute fuscous dots on the veins. The hindwings are reddish-grey.