Only 3 species of spiketails are found in Wisconsin and one of those (Delta-spotted, C. diastatops) is very rare. Spiketails are large dragonflies that resemble darners in some ways. When I first started this hobby of dragonflying, I'd never even heard of a spiketail and the first I saw I thought for sure was a darner. Had I only known then that spiketails' eyes meet only at a single point on top of the head and not along an entire seam/margin as in the darners! Both of our spiketails are black with two broad yellow stripes on the sides of the thorax and yellow markings on the abdomen. They prefer small-medium, clean, and often forested streams, where they typically fly low and direct throughout their early to mid-summer flight periods. The group name comes from the females' long spike-like ovipositor.