Formics:
[ETHIC:ASSAULT:PUNISH_CAPITAL]
[ETHIC:EAT_SAPIENT_KILL:ACCEPTABLE]
[ETHIC:EAT_SAPIENT_OTHER:ACCEPTABLE]
[ETHIC:KILL_ANIMAL:ACCEPTABLE]
[ETHIC:KILL_ENEMY:ONLY_IF_SANCTIONED]
[ETHIC:KILL_ENTITY_MEMBER:ONLY_IF_SANCTIONED]
[ETHIC:KILL_NEUTRAL:PERSONAL_MATTER]
[ETHIC:KILL_PLANT:ACCEPTABLE]
[ETHIC:LYING:UNTHINKABLE]
[ETHIC:MAKE_TROPHY_ANIMAL:ACCEPTABLE]
[ETHIC:MAKE_TROPHY_SAME_RACE:UNTHINKABLE]
[ETHIC:MAKE_TROPHY_SAPIENT:PERSONAL_MATTER]
[ETHIC:OATH_BREAKING:UNTHINKABLE]
[ETHIC:SLAVERY:ACCEPTABLE]
[ETHIC:THEFT:PUNISH_SERIOUS]
[ETHIC:TORTURE_ANIMALS:MISGUIDED]
[ETHIC:TORTURE_AS_EXAMPLE:ACCEPTABLE]
[ETHIC:TORTURE_FOR_FUN:APPALLING]
[ETHIC:TORTURE_FOR_INFORMATION:ACCEPTABLE]
[ETHIC:TREASON:UNTHINKABLE]
[ETHIC:TRESPASSING:ACCEPTABLE]
[ETHIC:VANDALISM:PUNISH_REPRIMAND]
Formic ethics are based around what my view of what a hive of insects organized around a racial caste system would likely follow. Trespassing and theft aren't punished harshly if at all, since everything belongs to the Queen anyways (though stealing could be viewed as and punished as stealing from the Queen herself), while treason is utterly unthinkable. Oaths are similarly inviolable. Lying is unthinkable because of the aforementioned communal views on property ownership - information being property.
Spider-Centaurs:
"Ethics? We have what, now?"
[ETHIC:ASSAULT:ACCEPTABLE]
[ETHIC:EAT_SAPIENT_KILL:ACCEPTABLE]
[ETHIC:EAT_SAPIENT_OTHER:ACCEPTABLE]
[ETHIC:KILL_ANIMAL:ACCEPTABLE]
[ETHIC:KILL_ENEMY:REQUIRED]
[ETHIC:KILL_ENTITY_MEMBER:ACCEPTABLE]
[ETHIC:KILL_NEUTRAL:ACCEPTABLE]
[ETHIC:KILL_PLANT:ACCEPTABLE]
[ETHIC:LYING:ACCEPTABLE]
[ETHIC:MAKE_TROPHY_ANIMAL:ACCEPTABLE]
[ETHIC:MAKE_TROPHY_SAME_RACE:ACCEPTABLE]
[ETHIC:MAKE_TROPHY_SAPIENT:REQUIRED]
[ETHIC:OATH_BREAKING:JUSTIFIED_IF_NO_REPERCUSSIONS]
[ETHIC:SLAVERY:ACCEPTABLE]
[ETHIC:THEFT:ACCEPTABLE]
[ETHIC:TORTURE_ANIMALS:ACCEPTABLE]
[ETHIC:TORTURE_AS_EXAMPLE:ACCEPTABLE]
[ETHIC:TORTURE_FOR_FUN:ACCEPTABLE]
[ETHIC:TORTURE_FOR_INFORMATION:ACCEPTABLE]
[ETHIC:TREASON:PERSONAL_MATTER]
[ETHIC:TRESPASSING:ACCEPTABLE]
[ETHIC:VANDALISM:ACCEPTABLE]
Spider-Centaur ethical codes mainly consist of "whatever we can get away with without being murdered by the victim, and then some, is allowed." I imagine their race is confined to barbarism because any spider-centaur with a half ounce of common sense and a set of working legs has hightailed it out of the towers and lives as a solitary paranoiac hermit in the tropics, unwilling to give you the time of day much less share any philosophical thoughts they might have had with you.