Back
July 12, 2019 — Rock County

Rock River Lagoon. Diversion of the Rock River that forms an elongate, shallow lagoon in Riverside Park, Beloit. The lagoon is about 110 m wide (E-W) and 225 m long (N-S), has some grasses/sedges growing around the edge, and is aerated with a fountain. Located on the west of Riverside Drive, about 0.5 km north of the intersection with White Avenue.

Common Green Darner (Anax junius)
Observed
Only a few seen.
Prince Baskettail (Epitheca princeps)
Photographed
Fairly common. Patrolling lagoon shoreline.
Photo of Prince Baskettail
 
Photo of Prince Baskettail
 
Photo of Prince Baskettail
 
Blue Dasher (Pachydiplax longipennis)
Photographed
Very common, particularly associated with lily pads at lagoon inlet.
Photo of Blue Dasher
 
Eastern Amberwing (Perithemis tenera)
Photographed
Very common
Photo of Eastern Amberwing
 
Eastern Pondhawk (Erythemis simplicicollis)
Photographed
Common, particularly at the NE side of the lagoon where floating algal mats collected.
Photo of Eastern Pondhawk
 
Photo of Eastern Pondhawk
 
Halloween Pennant (Celithemis eponina)
Photographed
Only a couple seen.
Photo of Halloween Pennant
 
Twelve-spotted Skimmer (Libellula pulchella)
Observed
Only a couple seen in flight.
Widow Skimmer (Libellula luctuosa)
Observed
Only a couple seen in flight.
American Rubyspot (Hetaerina americana)
Photographed
Only a couple seen.
Photo of American Rubyspot
 
Tule Bluet (Enallagma carunculatum)
Photographed
Fairly common.
Photo of Tule Bluet