Just 1d4 Con/1d4 Con?A creature bitten by the hook spider must successfully save versus poison or suffer an additional 25 hp of damage, or 2 to 8 points of damage if the save is successful. The onset time is two rounds, so a victim suffers no immediate effect in the round he’s bitten or in the following round. Hook spider venom quickly loses its potency if removed from the spider, becoming inert within 1d3 turns.
Treasure: x
2e Type A looks like double or even triple standard for their power level!
Alignment: Always lawful evil?
Advancement: x
A typical hook spider’s body is 4 feet long. It weighs about x pounds.
CR 4 is probably fair given all the PLAs, but they're a little squishy. CR 3 might be better.
We need to finalize the poison, too.
Just 1d4 Con/1d4 Con?
CR 4 is OK if the poison is reasonably potent, they've got a decent suite of attacks and defences.
Winning!
Are we finished with this one?
Do you fancy an underbar for the less intelligent but physically adept Spiderlings?
Cut Intelligence to 3-4 and lower the skills to go with the reduced Int?
Do we want to strip out the psionics and SLAs from the Spiderlings or leave them in? The original text says they're "equal in all respects save intelligence", so I guess they keep the spell-like/psionic powers.
I suppose we could, although they wouldn't lose any skill points and have no Int-based skills, so the stats are otherwise identical.
Yeah, I'd say that means "keep 'em", unless we want to take some creative liberties.