Tuesday, September 20, 2016

A Trickle of Native Insects Begins to Appear....

FINALLY!  We've lived here for about 16 months now and at last I am beginning to see a greater variety of  insects attracted to and living in our yard.  It's so exciting to go outside and see native pollinators nectaring at the few little blooms we have scattered around, or predatory insects patrolling the foliage and flowers.  It sure goes to show that changes don't have to be big or dramatic to have an impact.  Every little bit counts.

So here are some of my recent finds....






Gulf fritillaries (Agraulis vanillae) are gorgeous butterflies, with silver patterns on the undersides of their wings and an almost fluorescent orange coloration on the top side.  The fresh individual in the top photo was nectaring at garden phlox (Phlox paniculata), while the tattered one in the lower photo is nectarying at Flyr's Nemesis (Brickellia cordifolia), a rare wildflower in Florida that has recently become available at some native plant nurseries, including 7 Pines Native Plant Nursery in DeFuniak Springs.


Out and about, I'm seeing more gulf fritillaries flying everywhere these days, presumably due to the time of year.  However, I'm starting to count on seeing them regularly in our yard since we finally have some caterpillars eating the maypop vines (Passiflora incarnata) that we planted on the lower terraces last spring.  Just as monarch caterpillars only eat milkweeds, plants in the genus Asclepias, so gulf fritillary caterpillars only eat maypops and passionflowers, plants in the genus Passiflora.

Predators are pretty rare in the yard still.  It took me around 5 years to start noticing them regularly in my Kansas gardens, so I'm trusting that they'll increase in number as I garden naturally here.

With a lake right out the back door, however, we do have several dragonfly and damselfly species.  One of the species I've just started to see is the eastern amberwing (Perithemis tenera).  A male and a female have staked out the small patch of powderpuff (Mimosa strigillosa) in the front yard and I can count on finding them there essentially every day.



Although this species is quite small for a dragonfly, the male eastern amberwing, shown above, is easy to spot since he's dramatically colored, with shining amber-colored wings and a darker amber body.  Up close, the camera captures yellow markings on the thorax and abdomen that the eye generally misses.  The female, however, is much different....

...and much drabber.  Her darkly blotched wings and more sober colors don't attract the eye as her mate's colors do, but that's probably the point.  She, too, has yellow markings on her thorax and abdomen. 

These small dragonflies are said to eat "tiny, flying insects", which I interpret to mean mosquitoes.  Hopefully my male and female eastern amberwings will produce lots and lots of baby eastern amberwings to patrol my yard even more thoroughly!

Another colorful species that I've observed, photographed, and been able to identify is the metallic green bee, Agapostemon splendens.  I've always loved the metallic green bees, especially the ones that are entirely green, because of their vibrant coloring.

Shown above, the females of Agapostemon splendens are especially beautiful to my eye and earn their "splendid" moniker based on the beautiful shadings of blue and green on their abdomen.  Note:  I have no real idea why this species was labeled the splendid green metallic bee, but I think the abdomenal color IS splendid.

Here's another, closer look at that gorgeous color.  Look, too, at the pollen load that this little bee is carrying - the pollen from this species of flower is white, not yellow, and that's a LOT of pollen clustered on her hind legs!  She still has to finish her load and, most importantly, fly back to her nest with her carefully gathered provisions.  Like many other native bees, the Agapostemon bees nest in the ground, usually in a tunnel dug by the female.  After digging the tunnel, the female gathers together a ball of pollen and nectar, lays an egg on it, seals off the cell, and repeats the process several times.

Interestingly, like the eastern amberwing dragonfly above, Agapostemon splendens is another dimorphic insect species, with the male looking significantly different from the female.  The photo above is a male of the same species.  While the thorax is similar to the female's, the abdomen is completely different - males sporting a natty black and yellow stripe pattern that is vibrant, but not as pleasing to my eye.  This little guy was fun to watch.  He seemed to perform head stands as he fed, diving deeply into the flower to get his prize.

Unlike the colorful green metallic bees, the next bees I want to share with you are somber black with a few white markings.

Another native bee, this is a carpenter-mimic cuckoo-leaf-cutter (Coelioxys dolichos) - a name that seems more interesting than the bee looks, at least on first appraisal.  That's the bloom of a wild lettuce (Lactuca sp.) that she's feeding on.

What drew my attention to this bee was the pointed abdomen, which is very distinctive.  Cuckoo bees are parasites on other bees.  The females of this genus of cuckoo bee, Coelioxys, use that sharp abdomen to break into the nests of their host species and lay eggs on the pollen and nectar stored there for the host's eggs.  Because female cuckoo bees don't have to provision their own nests, they don't have pollen baskets and they aren't seen carrying pollen;  they do, however, still have to feed themselves.

This particular species, the carpenter-mimic cuckoo-leaf-cutter, is a parasite on a single bee species called the carpenter-mimic leaf-cutter bee (Megachile xylocopoides). Ironically, when I went to look up M. xylocopoides, I recognized the pictures as showing the same species as another, unidentified bee species in my recent photos!  I even took the photos of the two different species within a few feet of each other, just 1 day apart!

Here is the male carpenter-mimic leaf-cutter bee (Megachile xylocopoides), also feeding on wild lettuce blooms.  Did the two bees, the predator and the prey, hatch out of the same nest?  There's probably a good chance of it.  At the very least, it would appear that the nests were nearby.

There are many more sightings I'd love to share, but this post is long enough for now.  Hope you're seeing lots of interesting insects in your gardens, too!

5 comments:

katob427 said...

As always an interesting post. Glad to hear your work is bringing life back in to the yard!

Gaia Gardener: said...

Thanks! It's been rather hard to start over yet again, but seeing results helps me forge ahead again.

Corner Gardener Sue said...

I enjoyed your post, the photos and the information provided! I'm glad you are seeing the activity on your blooms.

Gaia Gardener: said...

Thanks, Sue. It'll be a long time until I'm able to rival the activity in your garden, I'm afraid! It's so much fun to see what you are finding.... One thing that surprises me, though, is that I'm learning that quite a few of the insects have wide enough ranges that they are found both in Nebraska and Kansas and down here in the panhandle of Florida.

Gaia Gardener: said...

Actually I've since identified the plant that the bees and wasps were nectaring on American Burnweed (Erechtites hieracifolia), rather than a wild lettuce.