Tomato leafminer (likely)

Larvae mine leaves of tomatoes and other vegetable, ornamental, and weedy plants; adults occur around cultivated gardens and fields.

Larvae feed within leaf tissue, creating pale, winding mines. Adults feed on plant juices and may puncture leaves to lay eggs or feed.

Females puncture leaves and deposit eggs; larvae tunnel between leaf surfaces, then exit to pupate in soil or on foliage. Several generations can occur during warm weather.

Heavy infestations reduce photosynthesis, stunt young plants, and can cause leaf drop, though established plants often tolerate light damage. They are not dangerous to humans; beneficial parasitoid wasps commonly help control them.