Last time I checked he had to focus entirely on controling the bugs when he was trying to restrain Tobi, he can't multi task if he tries to attack Hidan then he's releasing the bugs.this is a nice debate but shino would only lose bad cuz of kishi,
if you base it off of technical in the manga then shino stands a chance highly
but overall hidan would win , but shino still has a possibility.
shinos bugs could carry in swarms kunai and slash hidans eyes
plus he wont see through the swarm and will be like he is blind while he swings at the swarm of insects
shino can slash his eyes while his bugs can actually move independently remember llike they did in the story
once he turns them loose
Also Hidan has a strength of 4 in the databook, he will be able to free himself from his bugs, not to mention that Hidan is faster and way more agile than Shino, he won't even be able to catch him with his bugs in the first place.