There are large and small crickets, each was unique.
These little buggers are the bane and blessing of adventurers. If you find a location with lots of ogone’s, you know there is magic and magical treasure about. However, since the average adventurer has more magic items than the normal area, the flies will hang around the adventurer and their items.
Creepy, Crawley, Buzzing, Digging, Biting, Building, Sticking, Jumping, Clicking, and all the other things these small things do.
"OH MY GOD! LOOK AT THE SIZE OF THAT THING!"
It is whispered at harvest bonfires that sometimes swarms will combine into a monstrously huge pile of Black Leaf Bugs, able to instantly stop anything it comes across. What is left explodes in a shower of maggots.
Dragons, being huge and meaty, are the ideal habitat for countless unpleasant parasites.
These mites fly silently and are small enough to be nearly invisible to the naked eye. If it was not for light, no one would know they were there. These creatures absorb and re-emmit light, turning dim to bright, and bright to blinding.
Ka’tshar are very similar to ants with one exception. They are about 6" long.
A plague has hit the local area.
In humans it affects only the most vulnerable, the children and the very old, and even than it's little more than a summer cold. 24 hours of sniffles and then it's gone, barely noticeable really.
To sheep however it is fatal and the whole economy of the area is in serious trouble. If this keeps up the area could well be facing famine.
Somebody (enter the PCs) must find the rare herbs needed to make a cure.