Arboretum: Beggarticks and its Pollinators

Aside from the aphids, I spotted a number of other creatures in the Arboretum last week. An American bullfrog was spread out lazily in the marsh waters.

American bullfrog lounging in water
American bullfrog

I found a two-striped planthopper (Acanalonia bivittata) resting on a leaf. This planthopper gets its name from the two reddish-brown stripes that run along the upper edges of its wings. It also has red eyes and leaf-like raised veins on its wings.

Two-striped planthopper
Two-striped planthopper

A red-tailed hawk soared overhead.

Soaring red-tailed hawk
Soaring red-tailed hawk

Meadowhawk dragonflies abounded. I believe the one below is a male white-faced meadowhawk (Sympetrum obtrusum).

Male white-faced meadowhawk dragonfly
Male white-faced meadowhawk dragonfly

This other one is a female meadowhawk. It may also be a white-faced meadowhawk, but it’s not easy to distinguish meadowhawk females.

Female meadowhawk dragonfly
Female meadowhawk dragonfly

I found a few purple-stem beggarticks (Bidens connata) plants flowering in the meadow. This wildflower has toothed, opposite leaves and yellow flowers surrounded by about five green bracts.

Purple-stem beggarticks flowers
Purple-stem beggarticks flowers

Most of the stems were green but a few showed the purple color that gives this plant its name.

Purple-stem beggarticks stems
Purple-stem beggarticks stems

The beggarticks flowers were visited by a few pollinators, including a couple of hoverflies, one in the genus Toxomerus. and the other in the tribe Syrphini.

Toxomerus hoverfly
Toxomerus hoverfly
Syrphini hoverfly
Syrphini hoverfly

A number of sweat bees also visited the beggarticks flowers. These bees were a striking metallic green, and may belong to the genus Agapostemon.

Sweat bee
Sweat bee

Over on Meadow Road, the Chinese sumac trees (Rhus chinensis), accession 475-80*C, were in full bloom.

Chinese sumac in bloom
Chinese sumac in bloom
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