Identification
This bug is named for the cog-like projection on the back of the adult (photo 1 and 4). This is a large, gray bug – the larger females reach more than one inch (25 mm) in length. The young nymphs, seen in the spring, show quite a bit of red (not shown). After several molts, older nymphs still show some red but not yet a “wheel” (2, 3). Image 1 shows the dagger-like proboscis, but this specimen apparently had its antennae caught in a spider web. They eat a variety of other insects and caterpillars, usually by stalking.
Wheel bugs have a one year life-cycle. Because of their size and unusual form, they can be seen occasionally. The nymphs are seen locally in the spring and early summer; the adults from summer to early winter. Adults can best be seen where there are a variety of other insects, like in the hollows of Fontenelle Forest and Neale Woods, lurking for prey on tall flowers like Wingstem.
Their bite is said to be quite painful.
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