Your Dex score increases by 2, and your Wis score increases by 1

Thri-kreen reach maturity around 5 years and seldom live longer than 30

Most Thri-keen worry about themselves and their clutch (tribe) above all else. They tend towards neutral

Thri-keen are Medium. Their tall, lanky frames are usually around 6-7 feet including antennae. They usually weigh around 150-200 pounds

Your base walking speed is 35

You have a smaller, secondary set of arms. While they are not strong enough to attack with, they provide extra dexterity. You can draw or stow an additional item on your turn

Your powerful legs make all Thri-keen strong jumpers. You are always considered to have a running start for determining jumps. In addition, both your long and high jumping distances are increased by 10ft

Your body does not need to sleep like other humanoids. Instead you go into a trance like state. While in this state you are aware of your surroundings. You also only require 4 hours rest to equal a full night's sleep 

Your sandy coloration helps you ambush prey. You have advantage on stealth checks in desert enviroments

Life in the sandy waters has toughened you. You can go twice as long without water. You gain proficiency in the Survival skill

Your thick exoskeleton provides natural protection. While not wearing armor your AC equals 12 plus Dex

Your alien physiology is not always a boon. Having mandibles instead of an actual mouth makes it hard for you to be understood by most races. You have disadvantage on Persuasion check when not speaking Thri-Kreen

You can speak and write Common as well as speaking Thri-kreen. Thri-kreen does not have a writing system. Other humanoids can not speak the language lacking the mouthparts to make the sounds

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.