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.
Blue Dasher (
Pachydiplax longipennis)
Photographed
Very common, particularly associated with lily pads at lagoon inlet.
Eastern Amberwing (
Perithemis tenera)
Photographed
Very common
Eastern Pondhawk (
Erythemis simplicicollis)
Photographed
Common, particularly at the NE side of the lagoon where floating algal mats collected.
Halloween Pennant (
Celithemis eponina)
Photographed
Only a couple seen.
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.
Tule Bluet (
Enallagma carunculatum)
Photographed
Fairly common.