🕸️ A Star in the Salt Marsh: The Orbweaver of Hatches Harbor

Walking back along the Hatches Harbor main trail, I wasn’t looking for a spider. I was mostly looking for a way out of the heat. At this stretch, the path runs between salt marsh and tidal flats, harshly lit, the kind of midday glare that flattens everything into high-contrast shapes. I let my eyes do what they usually do in the field, scanning for what might be out of place, for the small break in pattern that says something living is tucked into the scene.

That was when I noticed the blotch.

Halfway up a great mullein stalk, a darker, spiky knot interrupted the clean, pale stem. I first mistook it for an unopened spotted knapweed flower head, something plant-like enough to pass by. Only then did it resolve into a remarkable little spider, a starbellied orbweaver, clinging to the stalk and nearly merged with the mullein’s woolly surface. From a distance it read as plant. Up close, it became pattern.

The starbellied orbweaver (Acanthepeira stellata) is a spiny-abdomen orbweaving spider found across much of North America. It favors open, sunny habitats, where it spins vertical webs at night to intercept flying insects. Its camouflage is especially effective against stems and dried vegetation, making it well suited to exposed coastal landscapes. Like other orbweavers, it builds the familiar wheel-shaped web, though in the glare and heat of the trail hers was difficult to see and may have been partly damaged. She seemed almost part of the mullein, a small, still shape holding fast in full sun.

At first I saw only her body and the plant. She was alert yet relaxed. No obvious web cut the space around her. The air beside the stem looked empty, full of heat shimmer and insect flight but not silk. Only after I stood quietly for a while did the rest of her story emerge: a faint suggestion of threads lower down the stalk, near the leaves, where the plant’s architecture thickened. There, the web was less a perfect wheel than a blur of lines tucked into the cooler, more textured part of the plant.

The spider had chosen the blotch position, above the main web, exactly where my brain would almost, but not quite, file her away as part of the plant. What broke the illusion was the thing I rely on most in the field: the sense that the symmetry is just a little off, that one small patch of color or shape doesn’t quite belong.

I do not see this species often. In fact, this was only my second sighting, and strangely enough, the first was exactly one year earlier to the day, on the same trail! Some places seem to keep their own calendars.

📷 Starbellied Orbweaver (Acanthepeira stellata) | © Claire O'Neill, please credit accordingly.