'a lava crawler' mobs in LavaStorm are not currently flagged as 'summoned' on the p99 server. They started out as Summoned on live, and then were changed in 2002 to not be summoned. Can be verified with comments on alla:
http://eqbeastiary.allakhazam.com/search.shtml?id=1984
I also thought the 'a rock dervish' mobs were summoned, but I can't seem to verify that.
LS used to be a level 14 druid's play ground with the anti-summoned DD line, but currently the only thing in LS you can use it against are the fire elementals (and maybe the imps? I didn't see any imps in my brief incursion there)