I never tamed one but a good way to tame it is to shoot a chain bolla at it and then you can just trap it in stone gate ways and let your firearms do the rest.Once it’s low bolla it again let it free,use a brontosaurus and make it eat the pheromone then it should impregnate your brontosaurus.Recommend killing it after because sometimes it comes back for you.

So what you wanna do is kill a male or something and then get its pheromone and put it in like a big dinosaur and then a female Rhyniognatha will lay a egg inside that dino with the pheromone and the baby will burst out of the dino (and yeah ur dino is dead you no longer have it) and you have to raise and take care of the baby Rhyniognatha. I hope this helped.

-TherizinosaurusGurl

For Ark ultimate mobile edition player:

I tamed two rhyniognatha.

#First Implantation

Host Creature: Bronto

Host Level: 253

Host Health: 43,499

Rhyniognatha Level Used: 135

Resulting Baby Level: 176

Resulting Baby Health: 7,588

# Second Implantation

Host Creature: Bronto

Host Level: 234

Host Health: 34,832

Rhyniognatha Level Used: 125

Resulting Baby Level: 158

Resulting Baby Health: 9,016

My first brontod craving were - gasoline, achitina paste, 2 fria curry.

My second brontos carving were. - 2 carcha eggs, 1 exceptional kibble, ammonite bile, caline stew.

I think the craving matters for good stats.

In my experience, my impregnated creature would not eat food on its own while I was away on another map gathering things for its cravings, or when I logged out even if the food was in its inventory. I had to force feed it to get it back to full. However, while I was there on The Island it would eat on its own. Just a heads up!

Some tips I'm going from my experiences today.

Take a Fob to defend yourself (Heavy and generator boxed up) while incubation happens

Have everything pre-made that it can ask for

Have a sinomacrops for the quicker perishables such as honey

Someone already posted a list of possible cravings, kudos.

Net gun is a must net whatever the female is fighting and then net her, kill off all distractions/threats then damage her

Use an assault rife and magnifying glass to gauge her health

When killing one of these get a couple flying creatures that can really take a hit like a griffin or something. Also when trying to tame one of these you have to impregnate a Dino but before you impregnate a Dino you have to get the rhyniognatha to at least 100 HP then let it mate with a large dinosaur (I used a Rex) after force feeding the orb to the large dinosaur you get after killing a rhyniognatha. Then the rhyniognatha will leave you alone and you have to care for the impregnated Dino and give it all its cravings. After almost an hour your impregnated dinosaur will die unfortunately, and you have a juvenile rhyniognatha and then it’s like raising a regular baby Dino