This brown lengthy, segmented horror writhes and twists, pulsing its venomous mandibles in search of prey.
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.
Centipede (CR 1/2)
AC 14, touch 12, flat-footed 12 (+2 dex, +2 natural)
hp 8  (1d8+4)
Fort +3, Ref +2, Will +0
Immune mind-affecting effects;
Resist earth 5 [holy 5/shadow 5]
Weakness Ice [shadow/holy]
Speed 40 ft. [50 ft], Climb 40 ft. [50 ft]
Melee Bite +2 (1d6-1 [+1 holy/shadow] plus poison)
Special Attacks Critical Attack
Str 9, Dex 15, Con 12, Int -, Wis 10, Cha 2
Base Atk +0; CMB -1; CMD 11 (can’t be tripped)
Feats Toughness*, Weapon Finesse
Skills Climb +10, Perception +4, Stealth +10; Racial Modifiers +4 Perception, +8 Stealth
Critical Attack (Ex)
Once per day as a standard action, the centipede can inflict more pain than normal. If they succeed at hitting with their bite attack, the damage is 1d6-1 x 1.5 for total damage.
Bite — injury; save Fort DC 13; frequency 1/round for 6 rounds; effect 1d2 non-elemental damage; cure 1 save. The save DC is Constitution-based and includes a +2 racial bonus.