Flesh Flies on glueboard
Flesh Flies, stuck on a glueboard, were attracted to the malt-flavored cat furball medicine placed on the glueboard. The glue board was in a corner, under the house, so the flies could only approach from two sides. The house had a rodent problem. It appears a rodent died, and was colonized by flesh flies. The newly emerged flies were then attracted to the malt-flavored cat furball medicine, which we sometimes use as an attractant in traps. Supporting the conclusion that the flies walked to the glueboard is that two of the flies have wings that had not fully developed, one of which is pictured below. It appears they walked to the glueboard and got stuck. Specimen collected by Jose Rodriquez, July 2015. Arnold Ca. (Calaveras County).
What is especially interesting is that the flesh flies were so strongly attracted by the cat furball medicine.
Click on an image to enlarge it.

Flesh Flies on glueboard attracted to malt-flavored cat furball medicine. The glue board was in a corner, so the flies could only approach from two sides. The house had a rodent problem. It appears a rodent died, and was colonized by flesh flies. The newly emerged flies were then attracted to the malt-flavored cat furball medicine, which we sometimes use as an attractant in traps.
Woolly oak aphids on black oak leaf
These are probably woolly oak aphids, Stegophylla brevirostris, infesting a large black oak tree in the yard of Angelo Costanza, 23 July 2015, Columbia California. Thanks to Lynn Wunderlich for the identification.
Several video links are at the bottom of this post.
Click on an image to enlarge it.
Video links:
Metallic wood boring beetle
Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California.
Dorsal view.

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California.
head and thorax.

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California. Detail of thorax, dorsal view.

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California.
That is a paper clip it is resting on.

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California. Detail of wing covers.

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California
Ventral view. Solid green.

Metallic wood boring beetle, July 2015, Collected by Steve Deaver, Twain Harte, California.
Detail of ventral surface
Bordered Plant Bug
Bumblebees
Bordered Plant Bug nymphs
Bordered plant bug nymph, 8 July 2015, Paul Cooper, Calaveras County.
Bumblebee on lavender
Bordered Plant Bug nymph
Swallowtail
Images by Paul Cooper, 14 July 2015, Calaveras County
Skimmer dragonfly
This skimmer was collected by Alissa, early July 2015. Click on image to enlarge it.