Microcolona sollennis is a moth in the family Elachistidae. It was described by Edward Meyrick in 1897.[1] It is found in Australia, where it has been recorded from New South Wales.[2]
The wingspan is 8–12 mm. The forewings are fuscous, irrorated (sprinkled) with dark fuscous, with a few irregular whitish scales and a blackish basal median dot. The stigmata is rather large, raised, black and partially whitish edged. The first discal before the middle, the second at three-fourths and the plical is large, somewhat obliquely before the first discal. There is a small black dot beneath the second discal. The hindwings are fuscous.[3]