In the realm of digital artistry, behold this masterpiece of the highest quality, an ultra-detailed and meticulously crafted CG illustration. It is a testament to the fusion of art and technology, where every element has been painstakingly rendered with the utmost precision and care.

At the center of this highly detailed composition, a single ant takes the spotlight, its entire body exposed to our gaze. But this ant is unlike any you've ever seen in nature, for it is a marvel of mechanical engineering. Its joints, a mere 1.4 in size, are machine-made, ensuring flawless movement and stability. Its limbs are no longer organic but instead mechanical, a symphony of gears and joints seamlessly integrated into its form.

As if the ant's exterior weren't captivating enough, the illustration goes further, unveiling the inner workings of this mechanical marvel. The ant's muscles are exposed, revealing a complex network of water vessels connected to tubes that pump life into this artificial organism. In a container adjacent to the ant's body, a brain of astonishing intricacy, measuring at 1.3 in scale, is suspended, controlling every movement with remarkable precision.

The ant's back is a study in mechanical elegance, with a series of mechanical vertebrae seamlessly attaching to its spine. Even the cervical region boasts a mechanical counterpart, ensuring the utmost flexibility and mobility. 

The ant sits in a pose of serene stillness, its expression frozen in an emotionless state, yet radiating an otherworldly beauty. Cinematic lighting bathes the entire scene, casting dramatic shadows and highlighting the incredible details of this mechanical wonder.

With dimensions of 1024 by 1024, this digital masterpiece is a testament to the boundless possibilities of art and technology, where the tiniest of creatures can be transformed into an ultra-detailed work of art, a fusion of nature and machinery that captivates the imagination and challenges our understanding of the world.