Anthropomorphic spider girl, hybrid insect humanoid, beautiful young woman with smooth pale skin seamlessly merging into glossy black chitinous exoskeleton on her lower body and abdomen, four additional long slender articulated spider legs growing from her hips and lower back, elegant human arms and hands with delicate fingers, large multi-faceted compound eyes with subtle human iris, sharp fangs slightly visible, long silky black hair flowing with web-like strands, delicate spinnerets, sensual curves, large breasts, narrow waist, full hips, shiny black carapace covering thighs and lower torso, dynamic action shot, crawling upside-down on a rough rocky cavern wall, body stretched and arched in motion, spider legs gripping the stone surface, human hands pressing against the wall for balance, hair and silk strands trailing behind from movement, soft moonlight filtering through cracks, highly detailed chitin texture and skin, intricate web patterns on her body, erotic sensual pose, seductive expression looking at viewer, realistic anatomy, sense of motion and weight, cinematic lighting, 8k, sharp focus