Identification

Field Marks

• Average adult size is approximately 1.8 inches
• Pale greenish face with a thin crossline, additional facial markings are faint, green eyes
• First set of thoracic stripes are bold and merge together at the top
• Second set of side stripes are thin and separated with the 3rd stripe often broken or incomplete above and the 4th faint
• Abdomen black with small triangular yellow top spots and small yellow sidespots on segments 3 through 7
• Dark club with no top spots on segment 8 through 10
• Yellow side spots on segments 8 and 9
• Club is prominent with segment 8 longer than segment 9, making the club look rounded from above, almost like a barrel

Field Marks

• Colored like the male
• Top spots on abdomen are longer than those of the male and yellow on sides of segments 8 and 9 is more prominent
• Abdomen has less 'clubbing' than the male
• Long subgenital plates

Behavior

The Green-faced Clubtail is usually more active later in the afternoon or when skies are overcast. They hunt by perching on rocks near riffles or by hovering over the riffles, often they are displaced by the wind only to dart back to hover in their original spot

Habitat

Rapids and riffles on medium sized streams and rivers with swift moving current and a mixed substrate of rock, sand and silt.

Reproduction

The female lays her eggs by dipping her abdomen into riffles or rapids. The swift moving current carries the eggs to slower portion of the river or stream where the larva will hatch and grow