Minnesota Dragonfly

Zebra Clubtail

Stylurus scudderi

Dark hanging Clubtail with green eyes and yellow to cream colored rings separating abdominal segments 3 to 7. Segments 8 and 9 have small triangular top spots and segments 7 through 9 have irregular shaped side spots. Males have a broad club. Females have a stout abdomen with very little clubbing

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Field Marks
  • Average adult size is approximately 2.3 inches
  • Black and light yellow to white in color
  • Green eyes with bold facial markings
  • First pair of thoracic strips are almost completely merged
  • Oval yellow spots completely surrounded by black on top of thorax between the wings
  • Segment 3 to 7 ringed in yellow
  • Yellow triangular top spots on segments 8 and 9
  • Irregular shaped side spots on segments 7 - 9
  • Male have a wide club, with segments 8 and 9 much wider than segment 10

Click on photos above for a close-up view.

Field Marks
  • Females are patterned like males except more of a deeper yellow color, compared to males who are light yellow to white
  • Females club is not as extensive as males
  • Females have a thin dorsal line extending from the rings on the abdomen
  • Females have small subgenital plates, much smaller than abdominal segment nine

Click on photos above for a close-up view.

Natural History


Males are very territorial. They are often seen flying close to the water, usually over riffles, patrolling or chasing off competitors. Females are secretive and rarely seen.


Swift clean rivers and streams preferably with a sandy bottom.


Mating and copulation usually takes place high in tree branches. Females make brief trips to lay eggs by tapping their abdomen on the water, usually over riffles, and then retreat back to the trees.

Range Maps

Click on the icons above for this species' range maps

Click here for county and state checklists from Odonata Central.

Range maps and checklists courtesy of Odonata Central. Copyright © 2016 OdonataCentral. All Rights Reserved. Abbott, J.C. 2006-2018. OdonataCentral: An online resource for the distribution and identification of Odonata. Available at www.odonatacentral.org.