Your Dexterity score increases by 2, and your strength score increases by 1. As well as giving proficiency to stealth and survival.

Being of the sub-species of queen phase spider your age is different then others. You reach maturity at a mere 2 months and due to your commanding nature can live for upwards of several hundred years, but no queen phase spider has been found dead from old age, so the true bounds of your age is unknown even to the most knowledge of scholars and researchers.

Traditionally as like many other animalistic race you are true neutral, not being particularly interested in morality but on survival as more humanoid species.

Due to your already large ancestral kin you expand on it,  having the size of huge. You are roughly the size of a large horse being around 8-12 feet tall.

Due to your huge stature and body type your base walking speed is 60ft, and your base climbing speed is 30ft.

You can speak, understand and read, Common and Giant. Due to your lack of hands being a arthropod you cannot write in any written language, only via verbal and magical means can you communicate.

Due to your spider ancestry, you have superior vision in dark and dim conditions. You can see in dim light within 120 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.

Ethereal Jaunt. As a bonus action, the spider can magically shift from the Material Plane to the Ethereal Plane, or vice versa.

Spider Climb. The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Walker. The spider ignores movement restrictions caused by webbing.

Burrow. The spider can dig throughout soft ground such as dirt, sand, and the like to make burrow holes large enough to fully fit itself inside. Within combat the spider can use burrow as a means to defend itself or flee but will not finish until the start of its next turn, if interrupted the spiders burrow action will be cancelled.

This queen spider when not within combat can lay eggs within a non-hostile environment. To determine how many eggs are laid roll 1d10. These eggs take roughly four weeks to hatch, the phase spiders within are under the command of the queen. In the case of the queens death one of it's offspring will natural produce a queen egg, If this egg is destroyed then that group will effectively die without any means of reproduction or leadership. 

Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 14 (2d10 + 4) piercing damage, and the target must make a DC 11 Constitution saving throw, taking 18 (4d8) poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

The creature attacks a target it can see in front of it within a 20ft range and projects a poisonous liquid from its fangs. The target must succeed a Constitution saving throw of 15 or take 1d12 poisoned damage, half damage on a successful roll.

This attack damage increases depending of the combat rating of the creature, if the creature meets the following CR it increases by 1d12, 5th level (2d12), 11th level (3d12), and 17th level (4d12).

Natural armour of 18, and you have resistance to poison damage.

Poison Resistance