Steve Deaver brought in a sample of tarweed from Valley Springs. We examined it under the microscope. Thrips were common, particularly on the flowers.
Branden Runyan brought these specimens from a customer’s house in Dorrington.
Dr. Philip Ward identified then as alate queens, in the subfamily Formicinae, probably a species of Lasius.
11 September 2020
9 September 2020
Angela Cordes found this tiny insect on her sleeve while sitting on a bench under a tree near our office. I asked Dr. Catherine Ann Tauber what the species might be (especially since we are looking for that possible lacewing species).
She said it is the “larva of Chrysoperla comanche – an unappreciated biological control agent in western USA, northern Mexico. It feeds on a variety of insect pests – e.g., aphids, scales, lepidopteran eggs, etc., and it is better in warm and dry habitats than other lacewings. It does not carry trash on its back, and it has never been reported to be associated with ants. It is not related to the earlier larvae with large trash packets. BTW: Chrysoperla formerly was in Chrysopa, but it now is recognized as different.”
Erik Brians found a fungal-type growth under some garden plants in Sonora. He brought a sample back.
I removed one of the tubes, and cut it open, as you can see in a series of images below. It was tough and fibrous.
I passed the photos along to Dr. David William Fischer, Mycologist, at American Mushrooms®. He believes it is a type of bird’s nest mushroom, but long dead. You can see photos of living specimens here. Thanks Dr. Fischer!
Alex Stewart, while doing a wood-destroying organism report, noticed the roof beam was badly rotted. The beam had a lot of small dead insects in it.
These ants were collected on a manzanita in Pine Mountain Lake, Groveland, California by Ryder Richards. 12 August 2020.
The ants are Pseudomyrmex apache, identified by Dr. Philip Ward. He states “an elegant arboreal ant that belongs to a predominantly Neotropical genus. One of my favorites.” Indeed, this ant is special. (and they never invade homes)
Dr. Ward has published a number of papers on this family of ants. Here are just a few, of many:
There is no common name for this particular species, but members of the subfamily Pseudomyrmecinaeenus are often called big-eye arboreal ants, Dr Philip Ward tells me.
Ryder Richards brought in two glueboards that had a total of six adult cockroaches, three females and three males, on August 4, 2020, from a home in Valley Springs.
These specimens represent the first confirmed sightings, to my knowledge, of the existence of Turkestan cockroaches in Calaveras County, and maybe this part of the state. I have recently, in the last two weeks, seen some specimens that the staff has brought in from parts of Tuolumne County that were very similar, and strongly suggestive of Turkestan roaches, but this sample leaves no doubt.
The Turkestan roach was first reported in the US at the Sharpe Army Depot, near Stockton, in 1978. But we have never seen this roach here, in the foothills, until now.
These specimens came from a house in Valley Springs, Calaveras County, California. These glueboards captured the roaches inside the house, in a bedroom and in the closet of the same bedroom. The roach is seen as primarily an outside pest, but that is clearly not their only choice of habitat.
8/17/2020 Update. We found Turkestan roaches in another home in Valley Springs, on Hartvickson.
I spoke to the homeowner. They had a mouse problem and had put out these glueboards to catch the mice. One did catch a mouse, as you can see hair on one of the boards. She said her dog ate the mouse off the glueboard. (I thought that was interesting.) She said that she’d seen one roach in her garage and had stepped on it. She spoke to a neighbor who told her that they, too, had seen roaches in their garage. She saw these roaches on her glueboards on Sunday and then called us on Monday. She started a pest control service, today, Tuesday.
Note. It might be that our mild winter, with almost no freezing days, have allowed these cockroaches to rapidly expand their population up here in the foothills.