A huge spider with distinctive green stripes. It is found all over the world, particularly in forested areas. It can produce a sticky silk like most other large spiders and wraps its prey up before devouring it. If you ever find yourself attacked by a black widow, you can be sure that it is a female specimen. The males are so undersized compared to the females that they would never dare attack humans and are sometimes even preyed upon by the females of their own species. This heartless practice is where their memorable name comes from.
As a summoned, template, creature, this creature has several changes. Anything noted with  is what it gains from the template associated with the summoners’ alignment. Divine is always listed first, and Unholy afterwards.
Black Widow (CR 4)
N Large Divine / Unholy Magical Beast [(holy/shadow)]
Init: +3; Senses Darkvision 60 ft. [darkvision 120 ft. and see in darkness], Tremorsense 60 ft.; Perception +5
[Aura Sacred Aura/Profane Aura]
AC 17, touch 12, flat-footed 14 (+3 dex, +5 natural, -1 size)
hp 42  (5d10+15)
Fort +7, Ref +7, Will +1
Immune mind-affecting effects;
Resist Wind 5, Shadow 5 [holy 10/shadow 10]
Speed 40 ft. [50 ft], Climb 40 ft. [50 ft]
Melee Bite +8 (1d8+6 [+1d6 holy/shadow] plus poison)
Space 10 ft.; Reach 5 ft.
Special Attack Corrosive Web, Critical Attack, Web (+7 ranged, DC 19, hp 5)
Str 19, Dex 16, Con 16, Int -, Wis 10, Cha 2
Base Atk +5; CMB +10; CMD 23 (35 vs. trip)
Skills Climb +22, Perception +6 (+10 in webs), Stealth +9 (+13 in web); Racial Modifiers +4 Perception (+8 in webs), +4 Stealth (+8 in web), +16 Climb
SQ Strong Webs
Corrosive Web (Su)
Once every 1d4+1 rounds, a black widow can throw a corrosive web on enemies in a 15-ft.-cone burst. All creatures caught within the cone must make a reflex save (DC 15) or are entangled for 2d4 rounds, but can break loose by spending 1 round and making a DC 19 Strength check or Escape Artist check. The webbed victims take 1d6 points of non-elemental damage per round while in the web. The strands of the web are flammable. A magic flaming sword can slash them away as easily as a hand brushes away cobwebs. Any fire—a torch, burning oil, a flaming sword, and so forth—can set the webs alight and burn away in 1 round. All creatures within flaming webs take 2d4 points of fire damage from the flames. This save is constitution-based. Blue mages may learn this ability as a 2nd level spell (Knowledge: Arcana DC 19).
Critical Attack (Ex)
Once every 1d4 rounds as a standard action, the black widow can inflict more pain than normal. If they succeed at hitting with their bite attack, the damage is 1d8+6 x 1.5 for total damage.
Bite – injury; save Fort DC 17; frequency 1/round for 6 rounds; effect 1d3 Strength damage and staggered; cure 2 saves. Save DC is Con-based with a +2 racial bonus.
Strong Webs (Ex)
A black widow’s webs gain a +4 bonus to the DC to break or escapes.
Divine – Sacred Aura (Su)
A divine creature emits supernatural light in a 10-foot radius around it. All those within the area of effect take 1d6 holy damage plus an additional 1d6 holy damage for every 5 racial HD the base creature has. A divine creature can suppress or resume the use of this ability as a free action.
Unholy – Profane Aura (Su)
An unholy creature emits supernatural darkness in a 10-foot radius around it. All those within the area of effect take 1d6 shadow damage plus an additional 1d6 shadow damage for every 5 racial HD the base creature has. An unholy creature can suppress or resume the use of this ability as a free action.