The phrase "a special bug" is correct and usable in written English.
It can be used to refer to a unique or noteworthy issue, often in the context of software or technology.
Example: "We discovered a special bug in the system that caused unexpected crashes during peak hours."
Alternatives: "a unique issue" or "an unusual glitch".
This week I saw the comedian Adam Buxton make a joke about Pokémon Go at a special BUG event, dedicated to the work of David Bowie.
I went to Boulder, Utah, because I read a cookbook — "With a Measure of Grace: The Story and Recipes of a Small Town Restaurant" — and 18 pages into it, there was a photograph of a serene-looking woman catching a housefly in a special bug catcher so that it could be released, unscathed, back into the wild.
Scrolling left and right through a pretty 2D forest, the player clicks on fireflies when lit to collect them, occasionally capturing a special blue bug that triggers an "insight", a short message that makes it feel like you're talking to the developer.
Players can add special bugs known as Cobalt Crawlers to make a spell target all enemies instead of one; a Host filled with eight Crawlers unlocks a secret spell.
And, when it comes to the electronic eavesdropping and other intelligence devices on the plane and what the Chinese might have learned from or about them, the discussions will take place in a SCIF, or Sensitive Compartmental Information Facility, a special soundproof room immune to bugging.
Some toy companies make a special vacuum that sucks up bugs.
For example, rhinos need help from a special bird to pick the bugs off the rhino's hide, chimpanzees have other chimps pick dirt off their fur, zebras and horses roll around in the dirt, cats lick themselves clean, and elephants bathe in dust or water.
Sony has announced that their latest F and C series laptops will include a special "overheating" feature caused by a bug in the heat management system in the BIOS.
In bed bugs, females have evolved a special structure in the body wall (spermalege) that reduces the risk of mating-associated infection and thus increases female tolerance to male mating behaviour (Reinhardt et al. 2003).
you can glue the gummy bears onto the lamp and put a special glaze over them so they do not attract bugs.
The last 3,000 bugs to roll off the line in Puebla were a special farewell edition in retro colors like Aquarius blue.
