Red Trillium (Trillium erectum) has many common names, among them Stinking Benjamin, due to its unappealing smell. It has no nectar to attract insects, so it uses its scent and the color of its petals (which resembles rotting meat) to lure pollinating insects, the majority of which are carrion flies and beetles.
Apparently this strategy has not gone unnoticed by certain insect-eating predators, such as spiders. As you can see in this photograph, a spider has snared and is eating (drinking) a fly in the web it spun on top of the trillium’s pollen-laden stamens.
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