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Probable lygaeoid nymphs

These tiny nymphs were collected by Ryles Richards from an account in Groveland, California. The little bugs were quite numerous. I asked Dr. Lynn Kimsey, of the Bohart Museum of Entomology, what they might be.

She said, based on these photos, that they looked like newly hatched, first instars of one of the lygaeoid families – Lygaeidae, Rhopalidae, Miridae or Largidae, but she would not be able to tell until they molt a few more times.

25 March 2020





Small Worker of the Carpenter Ant Camponotus quercicola

This smallish carpenter ant was collected by Erik Brians, in Jamestown Ca, 10 March 2020.

Based on these photos, Dr. Philip Ward identified it as a small worker of Camponotus quercicola. 

Here is a copy of the abstract of a paper, co-authored by Dr. Ward.

Systematics, Distribution, and Ecology of an Endemic California
Camponotus quercicola (Hymenoptera: Formicidae)

Department of Entomology and Center for Population Biology, University of California, Davis, CA 95616

Ann. Entomol. Soc. Am. 92(4): 514Ð522 (1999)

ABSTRACT The endemic California carpenter ant Camponotus quercicola Smith is a little known
component of oak woodland habitats containing Quercus wislizenii de Candolle and Q. agrifolia Nee.
Close investigation of one site, Stebbins Cold Canyon Reserve, showed that C. quercicola was a
dominant, arboreal ant species, foraging primarily at night. The 1st description of the sexual castes
of  C. quercicola is provided, together with a guide to distinguish all castes ofC. quercicola from similar,
sympatric Camponotus species. We compiled a distribution map based on our own collections and
museum specimens. To test the phylogenetic position of C. quercicola within the North American
Camponotus sensu stricto group, we sequenced 385 bp of the mitochondrial gene cytochrome oxidase
I from 9 Camponotus species. C. quercicola did not form a clade with the North American C.
herculeanus species group to which it was previously assigned. Preliminary results of microsatellite
analysis suggested a polygynous colony structure in this species.



Two Pack Rat Nests Under a House in Pine Mt Lake, Groveland

Ryles Richards found two pack rat nests under a house in Pine Mountain Lake, Groveland Ca. The nests were on opposite sides of the home’s subarea.

14 February 2020

A rat was actually in the smaller, multicolored nest, and ran away when Ryles found the nest.


One nest is made from a variety of materials, and was constructed on an old green sleeping bag.

The other nest, two pictures at the bottom, was more birdnest-like, in that it was open at the top.