Thursday, June 30, 2022

Ramble Report June 30 2022


Ramble Report June 30, 2022 

Leader for today's Ramble: Heather Larkin
Authors of today's report: Heather Larkin, Linda Chafin 
Insect identifications: Heather Larkin, Don Hunter
 
Link to Don’s Facebook album for this Ramble. All the photos that appear in this report, unless otherwise credited, were taken by Don Hunter.
https://www.facebook.com/media/set/?set=a.6022574794425702&type=3
 
27 Ramblers today 
 
Announcements:  
Linda announced that several folks responded to her request for Ramble co-leaders. Among those responding are Heather Larkin (insect specialist, naturalist, photographer, computer whiz), Bill Sheehan (fungi, galls, and insects expert), Holly Haworth (certified Appalachian naturalist, environmental journalist, UGA Ph.D. student, and more), Catherine Chastain (naturalist, veteran rambler), and Gary Crider (veteran rambler, invasive plant specialist). We are so happy to have this talented group of leaders! We met after today’s ramble and sorted out a leader calendar till the end of 2022, but new leaders are welcomed to step forward at any time!

 
Welcome to Heather on her first ramble as an official leader!

Today's emphasis: Pollinators in the Front Plaza, Museum Pollinator Beds, Herb and Physic Gardens, and Heritage Garden
 
Reading:
Bob presented his recent poem, “To Be In England”
http://bobambrosejr-poetry.blogspot.com/2022/06/to-be-in-england.html

To Be in England
for Sarah and Alan, Maggie and Willa

May in the South is a mellow affair –
how I fling open windows and breathe in the night,
how scented air soothes my skin, 

how my house exhales. I let go my grip
and sleep with whispers that drift on the breeze.
I wake to the calls of cardinals and wrens. 

The back deck beckons.
I take my mornings outside
where titmice and phoebes sing through the trees. 

I crumple up my do-list,
place my age on pause, and waste
whole days dreaming. A gentle rhythm 

settles in as new life quickens.
These are the weeks when springtime matures
and I would not leave them lightly. 

But I would fly four thousand miles and more –

To be in England when elderberry blooms,
and dog rose decorates embankments. 

The England of greenswards, copses and hedgerows,
of white lace flowering the shoulders of roads 

that carry me back to my daughter’s home
to slip on the role of grandpa again. 

To bask in a baby’s toothless smile
and feel the strength as she squirms for her mum.

To match wits with a cheeky toddler wielding
a mischievous grin. To watch her tussle 

then cuddle with dad. To embed in the bustle,
the banter, the tears, the staccato exuberance 

of playgrounds and parks. To be the old ‘grampa’
rolling a buggy down paths by the willows 

to a bend in the river where cygnets hatch
and hew to the wake of an elegant swan. 

As nights chase days, my weeks slip by – 

One morning I rise, home to gardenia
beginning to brown in the blaze of a summer
come too soon where I find myself just
another elder again wandering the aisles
of Kroger foraging for what I forgot.
 
*******

Show and Tell: 
 
Gary brought several specimens of the Class 1 invasive, Chinese Tallow Tree (AKA Popcorn Plant or Florida Aspen) from the Greenway. Native to tropical and subtropical Asia, it has been designated by The Nature Conservancy as “one of the ten worst alien plant invaders in the U.S.” Its destructive spread has been largely confined to lowland areas along the Gulf coast as far west as Texas and to barriers islands of Georgia and South Carolina. It is dismaying to find it as far inland as Athens; Kathy said it is present in great numbers at Heritage Park in Oconee County. It has undoubtedly spread from nearby planted trees; a quick search for this species on the internet finds that it is still for sale from a number of vendors.
Chinese Tallow Tree

Today's Route:   We left the Children’s Garden arbor and headed to the flower beds in the plaza in front of the Visitor Center and around the Porcelain and Decorative Arts Museum. We then made our way to the Herb and Physic Garden and the Heritage Garden before returning to the Visitor Center’s Garden Room for the social hour.

Mexican Sunflowers are often planted in the beds outside the Visitor Center. It's native to Mexico and Central America, and its flower heads are always busy with pollinators. In addition to the insects photographed below, we have seen butterflies, hummingbirds, and carpenter bees visit their flowers. This tall annual plant has velvety stems and more of less triangular leaves with winged leaf stalks.

Virginia Giant Hoverfly visiting the disk flowers in a Mexican Sunflower head
Hoverflies are bee mimics, but you can always tell them apart from bees by the antennae. Bee antennae come out of the top of their heads, fly antennae come out of their foreheads right between their big giant eyes. There seem to be quite a lot of fly "wannabees" and this link will tell you more.

   
Fiery Skipper

Common Eastern Bumble Bee

North American Tarnished Plant Bug  


Red Salvia is a bee magnet -- today we saw both Eastern Carpenter Bees and Western Honey Bees visiting its flowers. Both species were "nectar robbing," a term that describes how larger bees get nectar from smaller tubular flowers like those of Salvia. Smaller bees and butterflies insert their heads into the natural opening at the front of the flower to reach the nectar; in the process, pollen is rubbed onto their heads that is (hopefully) deposited in the next flower they visit. Large bees, like Carpenter Bees, whose heads will not fit into the natural flower opening, have learned to access nectar by chewing a hole in the base of the flower and extracting nectar through that opening. Bypassing the regular pollination route means the "nectar robbers" are not pollinating the plant.

Eastern Carpenter Bee nectar robbing from a Red Salvia flower

Honeybee tongues are too short to access nectar through the front of the flower and they also lack the mouth parts to chew into the flower, but they have learned to find and use the openings made by Carpenter Bees, demonstrating that bees can learn to access a nectar source that would not otherwise be available to them.
 
 
Common Eastern Bumble Bee on 'Little Joe' flower heads.
 
Georgia is home to three species of Joe-Pye-Weed (Eutrochium spp.) including Three-nerved Joe-Pye-Weed, a plant of Coastal Plain wetlands; our other two species are largely mountain plants. ‘Little Joe’ is a cultivar of Three-nerved Joe-Pye-Weed, and is a big hit with gardeners and pollinators. Today we saw Common Eastern Bumble Bees and Large Milkweed Bugs visiting its flower heads.


Swamp Milkweed flowers

An abundance of Swamp Milkweed was planted in the new beds behind the Porcelain and Decorative Arts Museum. Like other milkweeds, this species is a host plant for Monarch butterflies (though we did not see any caterpillars or adults today). It is also visited by Milkweed Bugs (which are true bugs) that feed on milkweeds by piercing the stems, leaves, and fruits and sucking the toxic sap. The toxins are incorporated into their tissues, and their orange and black coloration, being similar to Monarchs, are warning colors that let predators know they taste terrible. The bugs are not usually detrimental to the milkweed plant; efforts to eradicate them may also have a negative impact on Monarchs.

Milkweed Bug adults with nymphs in several different instar stages
Milkweed Bug adult



 
Milkweeds have a very special pollination method. They rely on a series of events that is accidental! First the insect has to put its foot INTO a narrow slit in the center of the flower. Then the flower deposits a sac of pollen onto the foot and sticks it there firmly. Then the insect has to get its foot OUT, which is not always easy. In fact, that can sometimes prove impossible and the insect tears its leg off or dies because it can’t get away. For those that DO get away, they bring that sac of pollen with them to the next flower. Then that same foot has to fall into the slit in the plant AGAIN to deposit the pollen in the new plant's flower. Quite a convoluted process that seems to work for these plants, since they’re super prolific! In the photo below, the arrow points to the tiny slit where the insect's leg must go.Good link for further reading about this "series of fortunate events": https://prairieecologist.com/2021/01/26/milkweed-pollination-a-series-of-fortunate-events/







Oleander Aphid infestation on Swamp Milkweed

Blackberry Lilies are actually an Iris!

The Herb and Physic Garden and Heritage Garden were buzzing with bees....and wasps and hornets and a Fiery Skipper or two.

Common Eastern Bumblebee on Purple Coneflower.
Bumblebees are easy to distinguish from Carpenter Bees: Bumbles are smaller, and they have fuzzy butts. Carpenters are larger, and they have shiny, smooth butts.

Common Eastern Bumblebee on Clasping Heliotrope
European Hornet attacking and capturing a Western Honey Bee.
European Hornets don’t collect nectar at all. They prey on other insects, honey bees being a primary target. They will follow honey bees back to the nest and invade,
sometimes killing the whole colony. They also attack and eat other insects such as  grasshoppers, flies, and yellow jackets.

Fraternal Potter Wasp on Fennel flowers.
Potter wasps sting and paralyze caterpillars and cart them off to small mud ‘pots,’ laying eggs on them. The eggs hatch out and the larvae eat the live, paralyzed  caterpillars before becoming adult wasps. 




Tiny Black Swallowtail caterpillars feeding on Fennel stalks.
Black Swallowtail caterpillars have a unique defense mechanism. If picked up, they extend yellow appendages from their heads, bend over backwards, and rub these all over the predator.
It totally stinks (and will last through several hand washings). If that’s not enough, the caterpillar will barf its last meal all over the predator!
Video link: https://www.youtube.com/watch?v=0sA2Y-jNqI4&ab_channel=BugoftheWeek 


Western Honeybee nectaring on Oregano flowers



Yellow Bedstraw or Lady's Bedstraw.
Yellow Bedstraw was used in the Middle Ages to stuff mattresses because its odor repels fleas. It was also used to curdle milk to make cheese; the Bedstraw genus name "Galium" has the same root word as "galaxy" -- both refer to milk.

Spiny Soldier Bug eggs on a leaf of Yellow Bedstraw.
These are a type of stink bug. The nymphs hatch out bright red and
then turn brown as they progress to adult stages.


Common European Greenbottle Fly


Asian Long-legged Fly
Long-legged flies are predators, eating tiny insects like
leaf hoppers, thrips, and mites.

SUMMARY OF OBSERVATIONS:
Mexican Sunflower     Tithonia rotundifolia
Virginia Giant Hoverfly     Milesia virginiensis
Common Eastern Bumble Bee     Bombus impatiens
North American Tarnished Plant Bug     Lygus lineolaris
Fiery Skipper     Hylephila phyleus
Red Salvia     Salvia coccinea
Eastern Carpenter Bee     Xylocopa virginica
Three-nerved Joe-Pye-Weed ‘Little Joe’ cultivar     Eutrochium dubium
Large Milkweed Bug     Oncopeltus fasciatus
Swamp Milkweed     Asclepias incarnata
Scarlet Beebalm     Monarda didyma
Purple Coneflower     Echinacea purpurea
Oleander aphids     Aphis nerii
Lemon Beebalm     Monarda citriodora
Clasping Heliotrope     Heliotropium amplexicaule
Oregano      Origanum vulgare  
Brazilian Vervain     Verbena brasiliensis
Western Honey Bee     Apis mellifera
Silvery Checkerspot     Chlosyne nycteis
European Hornet     Vespa crabro
Blackberry Lily     Iris domestica
Red-shouldered Hawk     Buteo lineatus
Fennel    Foeniculum vulgare
Fraternal Potter Wasp     Eumenes fraternus
Eastern Black Swallowtail (caterpillar)     Papilio polyxenes
Spiny Soldier Bug (eggs)     Podisus maculiventris
Yellow Bedstraw, Ladies' Bedstraw     Galium verum
Common European Greenbottle Fly     Lucilia sericata
Asian Long-legged Fly     Condylostylus sp.
Green Lacewing (larvae)     Chrysoperla sp.
Fall Webworm Moth (caterpillar)     Hyphantria cunea


Thursday, June 23, 2022

Ramble Report June 23 2022

Leader for today's Ramble, Linda Chafin
Today's emphasis:  Seeking what we find in the Lower Shade Garden and the Dunson Garden.
Don's Facebook Album contains all the photos he took on today's ramble. Unless otherwise credited, all the photos that appear here are courtesy of Don Hunter.
https://www.facebook.com/media/set/?set=a.6000650206618161&type=3
21 Ramblers today
Show-and-Tell:
Musclewood fruit

Richard brought the infructescence from a Musclewood tree, resembling that of a Hophornbeam, but more leaflike.
American Basswood fruits

Richard drops in with American Basswood fruits.
Gary looks on in amazement.

Richard also brought a number of fruits of an American Basswood. Each cluster of small fruits was suspended by a stalk attached to a leaf-like bract. The bract is shed from the tree and can, in a wind, carry the fruits a considerable distance away from the parent tree.

Spider attacked by Cordydeps fungus

Bill brought a dead spider that had been infected with a Cordycep fungus. The fungus grows throughout the body of the spider, killing it. The fungus then sends out spore producing structures. The fungus causes the infected host to climb to a location like an exposed leaf before it dies. Such places are optimal for the dispersal of spores.
 
Announcements:
  • Emily announced a new run on the old style Nature Rambler's t-shirt (dragonfly design).  She will provide details later.

  • Dale announced that he has decided to step down as a Nature Ramble co-leader, handing the reins over to Linda.  She has asked that other Ramblers volunteer to take every other Ramble, including being prepared with a reading.  No requirements other than lead to a favorite area at the Garden, with the understanding that we will have no trouble finding things to look at and talk about.  We will also hopefully have guest leaders pop in from time to time.  There will be a party at a future date to honor Dale and celebrate his contributions to the Nature Ramble group.
Reading:  Sue brought an interesting reading, a completely fortuitous composition created by cutting out a piece of note paper from a page of "printed on one side" text, intending to use the blank side for a grocery list.  She calls it "ng again"
 .
Ng up in the Southern woods right now
How thoroughly invasive plants import
er the surrounding fields and forests.
sing in the branches of Bradford pear
on ivy vines that coil around them, too.
nness.  I can hardly help greeting them
to understand what invasive species
ness.  It's entirely possible to understa
n this moment of dread and grief and
peeking out from the dead leaves o
icker of happiness that somehow leaps
e very saddest funerals, we can hear
a stagger out of an appointment.

Today's Route:   We left the Children's Garden pergola and headed directly down the right-side path into the Lower Shade Garden.  We wound our way through the Shade Garden and eventually entered the Dunson Native Flora Garden on the mulched path beginning at the old commemorative Dunson Native Flora Garden sign.  We walked all of the mulched paths containing ferns before heading4 back up to the Children's Garden, entering at the comfort station. 
LIST OF OBSERVATIONS:
 
American South Section:
Beebalm, Monarda didyma


Bald Cypress cones

Bald Cypress knees

 
Flower Bridge:
Long-legged Fly, killer of mites

Bottlebrush Buckeye in full bloom

Bottlebrush Buckeye inflorescence closeup

Bottlebrush Buckeye is in full bloom.  The flowers were visited by many insects, including bumble bees and butterflies.  
 
China and Asia Section:
Witch Hazel Spiny Gall

Witch Hazel Spiny Gall opened to show the aphids inside.

The Witch Hazel Spiny Gall aphid has a complex life cycle that involves two alternate host plants and numerous rounds of asexual reproduction on both hosts. Thrown in among this is the asexual production of winged forms that fly to the alternate hosts and reproduce sexually. If you are interested in the details you can find more information at this source.
 https://influentialpoints.com/Gallery/Hamamelistes_spinosus_spiny_witchhazel_gall_aphid.htm
 
Purple Trail:
 
Female (pistillate) Deciduous Holly showing the short shoots.

Deciduous Holly AKA Possumhaw Holly.  All the hollies in the southease are dioecious (male and female flowers are on separate plants).  Hollies also bear leaves on "short shoots." These are shoots that have extremely short internodes, resulting in clusters of leaves all jammed together.  
Leaf mine on Deciduous Holly

Many insect leaf miners produce a snake-like path as they feed between the upper and lower epidermis of a leaf. This leaf mine lacks a roof and the brown edges suggest that its occupant has departed, leaving the :roof to fall away. The dark mass at the bottom is the accumulated bundle of frass (fecal material).
American Carrion Beetle

Tom found an American Carrion Beetle on the upper surface of a bracket fungus. Carrion beetles are usually flound in the later stages of decay in vertebrates. They feed on the dried skin and flesh of road-killed mammals. This resource suggests that they may be attracted to mushrooms. 
Two Witch's Brooms at the base of an American Hophornbeam

We normally see Witch's Broom in the upper reaches of a tree. But maybe we don't always look for it down low. It's caused by bacterial or viral infection of the tree. 
 
Conservatory Back Area:
Eastern Cottontail Rabbit
 
SPECIES OBSERVED:
Scarlet Beebalm     Monarda didyma
Mariana Island Lady Fern     Macrothelypteris torresiana
Bald Cypress     Taxodium distichum
Asian Long-legged Fly     Condylostylus longicornis
Bottlebrush Buckeye     Aesculus parviflora
Common Eastern Bumble bee     Bombus impatiens
Eastern Tiger Swallowtail      Papilio glaucus
Red-femured Spotted Orbweaver     Neoscona domiciliorum
Chinese Witch Hazel     Hamamelis mollis
Spiny Witch Hazel Gall aphid     Hamamelistes spinosus
Spined Stilt Bug     Jalysus wickhami
Northern Red Oak     Quercus rubra
Deciduous Holly AKA Possumhaw Holly (male and female)     Ilex decidua
Holly leaf miner (no ID)
American Carrion Beetle     Necrophila americana
American Hophornbeam     Ostrya virginiana
Crossvine     Bignonia capreolata
Eastern Gray Squirrel     Sciurus carolinensis
Eastern Cottontail Rabbit     Sylvilagus floridanus