In terms of baby stats:

This has to be looked at as a Mating of your Host creature and the wild female Rhyni you getting the baby from rather than regular taming. Which means like regular breeding the baby can inherit stats from either.

The requrements to inherit the max amount of stats from the host (apart of the usual breeding chance to inherit stats from either female or "male") seems to be at this point:

-fulfill all carvings

-use either a giga, caracho or bronto as host creature

failing to do so reduces the posiible stats by a fairly high %

these bad bois can kill alpha raptor and carnos with ease cuz they won't aggro on u as long as u attack them from behind(specifically around their hind legs from above) so they won't see u and tbh i think almost any fliers can pull of this move but it's just that rhyniognatha has a very big advantage when killing medium alpha because of its mobility, damage, and most of all its ability to not get directly aggro on after a attack.

They are rare? I got like 3k chitin by killing ones near green oblysk and they come in packs of 3-4.(at least on mobile) so…

Get a very high level tanky megatherium and wander on edges of swamp and redwood near green oblysk.

Congratulations now you have thousands if chitin.

When tamed, one of these freaks can rule the water, land and sky. These things breeze through hordes of rexes and (when leveled up) have enough stamina to travel across the map in 1-2 stops. Their sheer strength allows them to carry an absurd about of materials that is great for resource farming at far away places! It can also pick up most of the creatures allowing for crazy combos like holding a diplo with an army of passengers seated on its saddle or even carrying ankys to and from the volcano. Amazing tame!

Only 2 will spawn on map at a time. Spawns are along the swamp River just south of the redwoods. Kill the males and take the pheromone from inventory(shotguns work well on them). When you find a female, have a tame nearby preferably a paracetamol for your first time. Damage the bug and peck at it with a low damage weapon to get below 10%. Put your tame on passive and feed it the pheromone. The rhynio will beat on it for a little bit but don't stress, it will fly up and whip down and impregnate your tame. (If you build a trap you can impregnate multiple tames, I've done 35 dinos off of 1 bug)

They destroyed this tame, speed compatible to a tally (once was faster than a wyvern) stats are very dull and prone to dying with health averaging 3k-5k, and a 50% decrease in speed when carrying things (again its allready around a tappys base speed)......the sky giga should actually be a sky giga considering how tricky and confusing it is to tame these things compared to an actual giga

You don't need to incubate at random dangerous places. Just place your host at your base and then aggro rhyniognatha with high level and mov speed sometime it will distracted but you have to agree again until your reach your base and make sure other dinos are passive and then proceed further and this way you can focus on cravings more efficienctly

This things are like helicopters they fly straight at you shoots something sticky it's says this things are rare rare my ass this things spawns like 2 3 at the swamp area not gonna lie it's easy for me to dodge them I just fly straight down near bronto or other bigger dino they stop chasing me after wards

I just wrote a tip about this, but I’m literally mindblown by this as a tame, and I can’t stop thinking of nice things to say about it.

It only needs 1 resin in its inventory to carry stuff, so that should be useful for those who are like me and are still working on building a sap factory out of taps and archaeopteryx. I’ve been using my current Rhynio to catch and tame the highest level rexes I can find so that’s I can breed rexes not only for the Dinos, but so I can impregnate a very powerful bred Rex with a higher level female, since the baby rhynios get stats from its host as well.

This Dino is insane, and I can simply pick up a large predator that’s invading and drop it somewhere else, or simply kill it because this bug is so strong.

It also has the status of an apex predator, so everything will leave you alone except for other massive carnivores.

It has useful ranged attacks, can swim horizontally as fast as it flies… why is this thing so perfect?