路边这只虫子，腹部自带一盏灯

Perched sideways on a rough twig, a small beetle-like fly reads head, thorax and abdomen in one clean line. Its abdomen has become a miniature glass lantern, fused smoothly onto the thorax, tiny panes held in fine dark metal ribs, a single warm flame burning inside the glass - the light it gives off is its own body's light. Fine legs grip the bark, folded translucent wings lie back along the lantern's top edge, and a pair of short antennae crown the head. Shoot it as macro wildlife-fantasy photography under dim evening light: deep blue dusk sits soft behind the twig while the lantern-abdomen becomes the brightest point in the frame, its warm glow washing over the fly's own back, catching the folded wingtips, gilding the bark beneath its legs, then fading off into the blue surrounding it. Keep the fly, its twig, and the reach of its glow centred in a wide 16:9 composition, fully inside the frame with clear margin on every side, the dim unlettered dusk carrying evenly to every edge.