A few posts
ago I shared a series of moth and other bug photos from the sheet that my
friend Margarethe hung at our campsite in the Pinal Mountains south of Globe,
Arizona in mid-July. We also did some productive birding and bugging during the
afternoon of our arrival, as well as the following morning.
The habitat
is extremely varied near the top of the Pinals due to a turbulent fire history
as well as the differences in soil and exposure. A few miles from the top the
road traverses the south-facing slope covered in a dense chaparral, and plants
normally from much lower elevations rise to near the peak. Margarethe took the
photo of me at the top by a large stand of Agave
chrysantha, Golden-flowered Agave. These agaves were being worked over by
many Rufous/Allen’s Hummingbirds (in all likelihood Rufous, but you can’t tell
in this plumage), and it was on this warmer side where we had most of the bugs.
One of the most
interesting was this Thistledown Velvet-ant, Dasymutilla glorisa. This is actually a wingless female wasp, and
some species are known to have a very powerful sting.
A Meridian
Duskywing was one of few leps active on this mostly overcast day.
This is Dipalta serpentina, the Serpentine Bee
Fly. I like bee flies because they have distinctive patterns on the wings and
body that are usually visible and easy to photograph. All we need now is a
field guide to the bee flies.
Very large
plants of the lovely Wyoming Indian Paintbrush, Castilleja linariifolia were in full bloom in a couple spots.
(Thanks to Mark Egger for confirming the ID.)
We worked
our way even higher to an area just barely on the N slope where there was a
taller and moister forest, but what was presumably an old burn had created a
nice thicket of Ceanothus fendleri,
still with lots of flowers.
If it had
been warm and sunny we surely would have seen a lot more stuff, but it was
still pretty good. This beetle is probably in the genus Attalus, in the odd family Melyridae, the soft-winged flower
beetles.
There were a
lot of these colorful case-bearing leaf beetles, Urodera dilaticollis. Notice how much smaller the male is than the
female.
Though lep
diversity was low, numbers of Southwestern Azures were everywhere. Here’s one
overshadowed by a handsome Taxiles Skipper, Poanes
taxiles.
This ant,
probably a carpenter ant, genus Camponotus,
is probably getting a sweet honeydew exudate from this caterpillar, almost
certainly that of a Southwestern Azure, Celastrina
echo cinerea. In turn the caterpillar presumably gets some protection.
The Arizona
Thistle, Cirsium arizonicum var.
bipinnatum, was strangely absent nectaring insects.
But maybe it
was just too cool, having been overcast all day, as this Nais Metalmark, Apodemia nais, was trying to get warm in
a patch of sunlight.
I managed to
bring in a very large flock of warblers, tanagers, nuthatches, Yellow-eyed
Juncos, and Black-chinned Sparrows with my pishing and pygmy-owl imitations. Some
of the birds, all apparently locally breeding birds, came in quite close, such
as this Blue-gray Gnatcatcher.
We drove to
the very top of Pinal Peak, not expecting to see much other than a fantastic
view. But we were surprised by the incredible numbers of Convergent Lady
Beetles, Hippodamia convergens. They
were in the low vegetation all around the buildings and antennae at the peak.
And despite
the cool weather, a Greater Short-horned Lizard, Phrynosoma hernandesi, was active.
On the
morning after buglighting we awoke to a beautiful dawn in the oak-chaparral
area where Spotted Towhees dominated the dawn chorus. Most other species weren’t
singing much at this late date.
We birded
and looked for insects just up from our camping spot where the canyon narrows
and a moister pine-oak forest dominates, with Arizona Sycamores, Arizona
Walnut, and even a stand of some very large Arizona Alders along the canyon bottom.
Hairy Woodpecker, Painted Redstart, and Red-faced, Grace’s, and Olive Warblers
were among the birds we found here, but a Sulphur-bellied Flycatcher was a nice
surprise and a first record for the Pinals.
There wasn’t
time for much botanizing, but I did have to pause to figure out this holly-like
bush, Rhamnus ilicifolia, Hollyleaf
Redberry. It’s in the same family as ceanothus but even more closely related to
the Cascara of my native Pacific Northwest; I don’t know if it has the same
laxative in the bark, as we didn’t try to roast hotdogs or marshmallows using
the branches.