You need the Pokemon with arena trap in battle or the wild Pokemon can flee
dugtrio and digglet
for 2-5 turns
well did you have it out in battle? if not it has to be out in battle with latios for arena trap to work. if you did have you trapinch out, then... either arena trap didn't work( witch would be weird) or i don't know. another Pokemon would be wynaut or wabuffet. it has the ability shadow tag and that keeps the Pokemon from escaping. i hope you catch the latios! :) -RR14
Trapinch. You can catch it in the desert. And if you just want a Pokemon to not flee there is also Wynaut and Wobbuffet.
no
get a Pokemon like wobbufet with the ability shadow tag, then you can corner it and capture it. arena trap ability works too
Diglett has an arena trap.
You need the Pokemon with arena trap in battle or the wild Pokemon can flee
Well, no new Pokemon have Arena Trap, but The Pokemon Dugtrio does and Wobbafett has Shadow Tag, which is the same. There is one Pokemon I believe that has Arena Trap as a Dream World Ability...not sure though. Hope this helps!
dugtrio and digglet
"In Pokemon ruby can Pokemon run from trapinch?"Yes and no. Most Pokemon cannot run from trapinch because trapinch has the ability Arena Trap, but flying types are unnaffected by Arena Trap.
for 2-5 turns
Diglet trachip
Pokemon with Arena trap this will help: http://www.serebii.net/abilitydex/arenatrap.shtml
Mean Look Arena Trap (ability)
well did you have it out in battle? if not it has to be out in battle with latios for arena trap to work. if you did have you trapinch out, then... either arena trap didn't work( witch would be weird) or i don't know. another Pokemon would be wynaut or wabuffet. it has the ability shadow tag and that keeps the Pokemon from escaping. i hope you catch the latios! :) -RR14