Avicularia (3.5e Monster)

Pink fuzzy feet, some sort of fuzzy wings. When threatened by surprise or if its target starts charging or fleeing, an Avicularia will use Web Shot. Wikipedia has an article on Avicularia, but this only superficially is similar to the real life equivalent.

Combat
A hunting spider adds its Dexterity modifier to attack and damage rolls instead of its Strength modifier.

 : A hunting spider may make a full attack on a charge. When it does so or ii normally in flight, it may make an additional attack with each of its front legs in addition to its bite attack as a full attack without suffering any penalties to attack rolls.

 : A creature struck by the hunting spider’s bite attack must succeed at a DC 19 Fortitude save or suffer effects identical to a poison spell (1d10 Con/1d10 Con). This ability is extraordinary in nature and not subject to spell resistance of any kind. This save DC is Constitution-based.

 : As per the spell, Spider Climb except mundane and permanent.

 : With a successful ranged touch attack useable as an immediate action, a hunting spider may target a single creature within Close range (default range of 40 feet) and subject them to the effects of a web spell (only affecting that target instead of an area). A Dexterity-based Reflex save (DC 19) is needed to resist this effect. After using Web Shot, an Avicularia can not use it again until it readies it as a swift action.

If it succeeds on this ability, an Avicularia may follow the web on its turn as a move action to move next to the target without provoking an attack of opportunity, though if it uses this ability against a target on the ground, the Avicularia stops flying.

 : By spending one hour, an Avicularia may spin an armor around another Avicularia. This armor is considered to be Masterwork Spidersilk armor. Even though it is masterwork, this armor may not be magically enchanted. An Avicularia may spin an armor for itself by spending sixteen hours.

Mother Avicularia
A Mother Avicularia is one challenge rating higher, and based on MLET, a Mother Avicularia gains one Hit Die.

Combat
As normal Avicularia, plus the following ability.

 : When a creature fails their Reflex save against Web Shot, it also takes Poison damage, including the Fortitude saves to negate damage.

Mother Avicularia care about her Brood, and will use her Web Shot to defend them. They are also noticeably bigger than their brood.