this translation is wrong because in english you need to give the insect an article; thus, it should be: "a" dirty insect.
"A fly is a dirty insect" should be the correct English. Reported again on 2017-05-29
Reported 4/7/2018, but judging by all the comments sections, it's pretty clear Duolingo isn't bothering to update anything. Most of the mistakes have been reported for years now.
I don't know about this particular one but I can confirm that corrections are being made. So, far I have received more than 10 notifications telling me that my suggestions were now accepted. I know it is frustrating but I think we need to wait a bit more
Were the corrections you made to Swahili or some other language? Every Swahili mistake I've seen has been reported multiple times over months or even years. I just don't think anyone is updating anything in the Swahili lessons.
I was referring to the Swahili. Yes, they have been added and I received confirmation emails regarding the same. It's a work in progress.
I have just received a confirmation email today (2018-04-09) stating that my suggestion, "A fly is a dirty insect", was now accepted as a correct answer. So, things do her updated but unfortunately sometimes not at the pace we may want. I would be glad to help clean up if they need more manpower.