Your Dexterity score increases by 2 and your constitution score increases by 1.

Your size is Large

Chitines reach physical maturity at about the same age as humans, An chitine typically claims adulthood and an adult name around the age of 100 and can live to be 750 years old.

Chitines are mostly chaotic evil.

Your base walking speed is 30 feet and you have a climbing speed of 30 feet.

Accustomed to twilit forests and the night sky, you have superior vision in dark and dim conditions. 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.

You have advantage on saving throws against being charmed, and magic can’t put you to sleep.

Sunlight sensitivity: while in sunlight, the chitine has disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight.

As all chitines have four arms they gain the following benefits:

they can hold four objects at a time

when duel wielding they can attack with 3 weapons instead of 2, not using their ability modifier for the third weapons damage die.

You can speak, read, and write Common and Undercommon.

While in contact with a web, the chitine knows the location of any creature that's touching the same web.

the chitine ignores all movement restrictions caused by webbing.