Photos / Sounds

What

Common Hover Fly Parasitoid Wasp (Diplazon laetatorius)

Observer

lynda26

Date

October 3, 2021 09:29 AM PDT

Photos / Sounds

Observer

catchang

Date

May 27, 2021 11:19 AM PDT

Photos / Sounds

What

Mossy Rose Gall Wasp (Diplolepis rosae)

Observer

emily-wheeler

Date

June 4, 2021 10:09 AM PDT

Photos / Sounds

What

Red Cone Gall Wasp (Andricus kingi)

Observer

dswight

Date

September 2, 2021 10:46 AM PDT

Photos / Sounds

What

Coral Gall Wasp (Burnettweldia corallina)

Observer

mmarchiano

Date

September 10, 2021 10:40 AM PDT

Description

On Blue Oak

Photos / Sounds

What

Coral Gall Wasp (Burnettweldia corallina)

Observer

anudibranchmom

Date

October 9, 2021 10:20 AM PDT

Description

Dried up
On Blue Oak.

Photos / Sounds

What

Coral Gall Wasp (Burnettweldia corallina)

Observer

michaelvoeltz

Date

October 9, 2021 12:18 PM PDT

Description

Observed on blue oak (Q. douglasii)

Photos / Sounds

What

Kernel Flower Gall Wasp (Callirhytis serricornis)

Observer

lillora

Date

October 9, 2021 04:27 PM PDT

Description

On interior live oak tree leaf.

Photos / Sounds

What

Oak Ribbed Casemaker (Bucculatrix albertiella)

Observer

michaelvoeltz

Date

August 30, 2021 09:08 AM PDT

Description

Found of coast live oak (Quercus agrifolia)

Photos / Sounds

What

Oak Ribbed Casemaker (Bucculatrix albertiella)

Observer

michaelvoeltz

Date

August 2021

Description

Found attached to vehicle window

Photos / Sounds

Observer

michaelvoeltz

Date

August 30, 2021 09:10 AM PDT

Description

Observed a dozen or more curved acorns on coast live oak (Quercus agrifolia). Presumed exit holes found on some. Some variety of exudate observed on one acorn.

Photos / Sounds

What

Ichneumonid Wasps (Family Ichneumonidae)

Observer

michaelvoeltz

Date

August 30, 2021 08:38 AM PDT

Photos / Sounds

What

Australian Eucalyptus Gall Wasp (Ophelimus maskelli)

Observer

michaelvoeltz

Date

September 1, 2021 10:17 AM PDT

Photos / Sounds

Observer

michaelvoeltz

Date

September 11, 2021 01:05 PM PDT

Description

On coast live oak (Q. agrifolia). Only such specimen observed among nearby hosts.

Photos / Sounds

What

Mottled Acorn Gall Wasp (Callirhytis carmelensis)

Observer

michaelvoeltz

Date

September 11, 2021 01:15 PM PDT

Description

Observed on coast live oak (Q. agrifolia). Roughly a dozen observed.

Photos / Sounds

What

Live Oak Petiole Gall Wasp (Melikaiella flora)

Observer

michaelvoeltz

Date

September 11, 2021 01:12 PM PDT

Description

Found on coast live oak (Q. agrifolia). Roughly a dozen or so such petioles observed on host tree.

Photos / Sounds

Observer

michaelvoeltz

Date

September 21, 2021 09:36 AM PDT

Photos / Sounds

What

Rosette-Gall Wasp (Andricus wiltzae)

Observer

michaelvoeltz

Date

September 22, 2021 08:08 AM PDT

Description

Observed on valley oak (Q. lobata)

Photos / Sounds

What

California Oak Moth (Phryganidia californica)

Observer

michaelvoeltz

Date

September 10, 2021 10:29 PM PDT

Photos / Sounds

What

Red Cone Gall Wasp (Andricus kingi)

Observer

michaelvoeltz

Date

September 28, 2021 06:21 PM PDT

Description

This is a duplicate observation for the gall itself.
Observed on valley oak (Q. lobata). Gall species is abundant in this area.

Observation for the wasp is here (https://www.inaturalist.org/observations/96545176).

Photos / Sounds

What

Red Cone Gall Wasp (Andricus kingi)

Observer

michaelvoeltz

Date

September 28, 2021 06:04 PM PDT

Description

Duplicate observation for the gall species itself. Observed on valley oak (Q. lobata).

Observation for the wasp is here (https://www.inaturalist.org/observations/96545338).

Photos / Sounds

Observer

michaelvoeltz

Date

September 28, 2021 06:04 PM PDT

Description

Seems it may have an ovipositor inserted into the red cone gall, with the sheath jutting out to the right. Unless I'm mistaken regarding the anatomy.
Observed on valley oak (Q. lobata).

Photos / Sounds

What

Kernel Flower Gall Wasp (Callirhytis serricornis)

Observer

michaelvoeltz

Date

October 9, 2021 04:28 PM PDT

Description

Agamic; observed on interior live oak (Q. wislizeni)

Photos / Sounds

What

Urchin Gall Wasp (Cynips quercusechinus)

Observer

abcdefgewing

Date

September 5, 2021

Description

On Blue Oak.
Jan Park.

Photos / Sounds

What

Urchin Gall Wasp (Cynips quercusechinus)

Observer

tiwane

Date

October 2, 2021 06:51 PM PDT

Photos / Sounds

What

Urchin Gall Wasp (Cynips quercusechinus)

Observer

rmoger

Date

October 6, 2021 09:14 AM PDT

Description

On interior live oak

Photos / Sounds

What

Dusty-winged Lacewings (Family Coniopterygidae)

Observer

merav

Date

October 9, 2021 03:12 PM PDT

Description

on oak

Photos / Sounds

What

Coral Gall Wasp (Burnettweldia corallina)

Observer

merav

Date

October 9, 2021 05:03 PM PDT

Description

on blue oak

Photos / Sounds

What

Lappet Moths (Family Lasiocampidae)

Observer

merav

Date

October 9, 2021 03:43 PM PDT

Description

on blue oak

Photos / Sounds

Observer

merav

Date

October 7, 2021 02:23 PM PDT

Description

on Valley Oak

Photos / Sounds

Observer

merav

Date

October 8, 2021 11:45 AM PDT

Description

on Coast Silk Tassel

Photos / Sounds

What

Woollybear Gall Wasp (Atrusca trimaculosa)

Observer

merav

Date

October 8, 2021 12:01 PM PDT

Description

on California Scrub Oak

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

anudibranchmom

Date

October 10, 2021 09:33 AM PDT

Description

An oddball from @merav's excellent gall week event. ;-) On Blue Oak.

Photos / Sounds

Observer

leslie_flint

Date

October 10, 2021 09:48 AM PDT

Description

Fold Gall Sawfly inhabited now by aphids and ants

Photos / Sounds

What

Australian Eucalyptus Gall Wasp (Ophelimus maskelli)

Observer

merav

Date

October 8, 2021 11:10 AM PDT

Photos / Sounds

What

Huckleberry Broom Rust Fungus (Pucciniastrum goeppertianum)

Observer

damontighe

Date

October 8, 2021 11:45 AM PDT

Photos / Sounds

What

Ginkgo Spot (Bartheletia paradoxa)

Date

January 16, 2021 12:43 PM PST

Photos / Sounds

What

Boxwood Leafminer (Monarthropalpus flavus)

Observer

harsiparker

Date

January 6, 2021 01:50 PM PST

Description

Underside view of leaves from a Common Box (Buxaceae: Buxus sempervirens) showing swellings formed by the developing larvae of the gall midge.

According to the European-based leafminer sites, this species overwinters as a larva and pupates in early spring.
http://www.ukflymines.co.uk/Flies/Monarthropalpus_flavus.php
https://bladmineerders.nl/parasites/animalia/arthropoda/insecta/diptera/nematocera/cecidomyiidae/cecidomyiinae/cecidomyiidi/cecidomyiidi-unplaced/monarthropalpus/monarthropalpus-flavus/

Note: In case anyone is curious, there is also a deceased barklouse (Graphopsocus cruciatus) visible on the leaf to the right, and much further left, a few shed psyllid nymph exuviae (Psylla buxi).

Photos / Sounds

What

Boxwood Leafminer (Monarthropalpus flavus)

Observer

harsiparker

Date

October 8, 2021 02:43 PM PDT

Description

Galls on Common Box (Buxaceae: Buxus sempervirens). These were most likely last season's galls as there are several visible exuviae left by the exiting adult midges. For those that are interested, there are photos of intact galls from this same plant considerably earlier in the year here:
https://www.inaturalist.org/observations/69096553

Photos / Sounds

Observer

nelruzam

Date

October 4, 2021 05:55 PM PDT

Description

Golden Chinquapin, Chrysolepis chrysophylla

Photos / Sounds

What

Broom Gall Mite (Aceria genistae)

Observer

beartracker

Date

October 5, 2021 06:04 PM PDT

Description

Host: Scotch broom - 5-parted stem

Photos / Sounds

What

Golden Gall Wasp (Heteroecus melanoderma)

Observer

garth_harwood

Date

October 5, 2021 12:18 PM PDT

Description

Host: Canyon Live Oak.

Photos / Sounds

What

Potato Gall Midge (Rabdophaga salicisbatatus)

Observer

garth_harwood

Date

October 5, 2021 10:49 AM PDT

Description

Host: Arroyo Willow.

Photos / Sounds

Observer

garth_harwood

Date

October 5, 2021 10:33 AM PDT

Description

Host: Coastal Bush Lupine. Russo's "Bud-Gall Midge", pg. 271 (Russo 2021).

Photos / Sounds

What

Fimbriate Gall Wasp (Andricus opertus)

Observer

garth_harwood

Date

October 4, 2021 01:44 PM PDT

Description

Host: CA Scrub Oak. Leaf and petiole galls.

Photos / Sounds

Observer

harsiparker

Date

June 24, 2019 05:24 PM PDT

Description

Feeding on Ragwort (Asteraceae: Jacobaea vulgaris).

Photos / Sounds

What

American Redstart (Setophaga ruticilla)

Observer

henicorhina

Date

June 13, 2006 11:59 AM PDT

Photos / Sounds

What

Western Seapurslane (Sesuvium verrucosum)

Observer

constance

Date

August 9, 2020 02:00 PM PDT

Photos / Sounds

What

Western Seapurslane (Sesuvium verrucosum)

Observer

morganstickrod

Date

October 12, 2020 02:59 AM PDT

Photos / Sounds

Observer

elkhorn4

Date

August 28, 2021 12:00 PM PDT

Photos / Sounds

What

Fremont's Cottonwood (Populus fremontii)

Observer

eurobanana

Date

September 13, 2021 02:16 PM PDT

Photos / Sounds

What

Small Checkered-Skipper (Pyrgus scriptura)

Observer

morganstickrod

Date

September 18, 2021 12:26 PM PDT

Description

On Malvella leprosa

Photos / Sounds

Observer

kueda

Date

September 24, 2021 11:03 AM PDT

Description

On Sesuvium (its host), which is abundant at this location.

Photos / Sounds

What

Life

Observer

merav

Date

October 3, 2021 05:16 PM PDT

Description

On oak

Photos / Sounds

What

Western Sycamore Lace Bug (Corythucha confraterna)

Observer

kaye6

Date

June 19, 2021 01:43 PM UTC

Photos / Sounds

What

Roseate Emperor (Eochroa trimenii)

Photos / Sounds

What

Arthropods (Phylum Arthropoda)

Observer

merav

Date

October 2, 2021 11:52 AM PDT

Description

Bud gall? on Doug fir

Photos / Sounds

What

Mormon Metalmark (Apodemia mormo)

Observer

merav

Date

October 1, 2021 10:59 AM PDT

Photos / Sounds

What

Shadow Lacewings (Genus Eremochrysa)

Observer

damontighe

Date

September 24, 2021 08:09 PM PDT

Photos / Sounds

What

Oak Ribbed Casemaker (Bucculatrix albertiella)

Observer

damontighe

Date

September 28, 2021 10:43 PM PDT

Photos / Sounds

What

Mites (Superorder Acariformes)

Observer

damontighe

Date

September 30, 2021 06:34 PM PDT

Photos / Sounds

Observer

merav

Date

September 24, 2021 12:38 PM PDT

Photos / Sounds

What

Honeysuckle Gall Midge (Lonicerae lonicera)

Observer

finatic

Date

March 30, 2019 05:31 PM PDT

Description

San Diego County, California, US

Photos / Sounds

What

Cabbage Bud Gall Midge (Lonicerae russoi)

Observer

merav

Date

September 24, 2021 01:30 PM PDT

Description

on Pink Honeysuckle (Lonicera hispidula)

Photos / Sounds

What

Cabbage Bud Gall Midge (Lonicerae russoi)

Observer

catchang

Date

March 24, 2018 02:52 PM PDT

Description

On Lonicera

Photos / Sounds

Observer

merav

Date

September 24, 2021 12:37 PM PDT

Photos / Sounds

Observer

merav

Date

September 24, 2021 01:55 PM PDT

Description

on valley oak

Photos / Sounds

What

Apache Twig Ant (Pseudomyrmex apache)

Observer

merav

Date

September 24, 2021 01:12 PM PDT

Photos / Sounds

Observer

merav

Date

September 24, 2021 12:39 PM PDT

Photos / Sounds

Observer

pufferchung

Date

August 2021

Description

The second picture is UVIVF

Tags

Photos / Sounds

What

Devil's Trumpets (Genus Datura)

Observer

damontighe

Date

July 22, 2021 09:52 PM PDT

Photos / Sounds

What

Goldenrod Crab Spider (Misumena vatia)

Observer

damontighe

Date

May 16, 2020 09:20 PM PDT

Description

395 nm handheld uv light, photographed through yellow sunglasses

Photos / Sounds

What

Common Whitetail (Plathemis lydia)

Observer

pufferchung

Place

Texas, US (Google, OSM)

Description

Male, UVIVF, second picture is normal light

Tags

Photos / Sounds

What

Common Green Darner (Anax junius)

Observer

pufferchung

Place

Texas, US (Google, OSM)

Description

Female
UVIVF
Sorry It flew away after I took this picture. I couldn't take a picture with normal light

Tags

Photos / Sounds

What

Green Lynx Spider (Peucetia viridans)

Observer

alan_rockefeller

Date

September 12, 2021 01:49 AM PDT

Photos / Sounds

What

Great Spreadwing (Archilestes grandis)

Observer

merav

Date

September 26, 2021 01:39 PM PDT

Photos / Sounds

Observer

harsiparker

Date

September 19, 2021 02:53 PM PDT

Description

Discovered this amazing critter while turning over fallen maple leaves. It wasn't clear to me whether the phalacrid (visible in several of the photos) was incidental or if I had interrupted a potential predator/prey interaction.

Photos / Sounds

What

Spotted Woolcarder (Anthidium maculosum)

Observer

merav

Date

September 26, 2021 12:58 PM PDT

Photos / Sounds

What

Confusing Petrophila (Petrophila confusalis)

Observer

merav

Date

September 26, 2021 08:46 AM PDT

Photos / Sounds

What

Sunburst Gall Wasp (Andricus stellaris)

Observer

chilipossum

Date

September 19, 2021 01:27 PM PDT

Photos / Sounds

What

Woollybear Gall Wasp (Atrusca trimaculosa)

Observer

garth_harwood

Date

September 18, 2020 01:38 PM PDT

Description

Host: Leather Oak.

Photos / Sounds

What

Woollybear Gall Wasp (Atrusca trimaculosa)

Observer

kdff

Date

August 23, 2021

Description

On Q. lobata.

Photos / Sounds

What

Woollybear Gall Wasp (Atrusca trimaculosa)

Observer

kdff

Date

September 6, 2021

Description

On Q. lobata.

Photos / Sounds

What

Woollybear Gall Wasp (Atrusca trimaculosa)

Observer

anudibranchmom

Date

September 25, 2021 10:24 AM PDT

Description

On white oak group

Photos / Sounds

What

Elegant Tern (Thalasseus elegans)

Observer

naturesarchive

Photos / Sounds

Date

July 8, 2015

Photos / Sounds

Observer

tiwane

Date

June 30, 2019 01:22 PM PDT

Photos / Sounds

What

Pebble Bees (Genus Dianthidium)

Observer

hfabian

Date

July 22, 2016 11:34 AM PDT

Photos / Sounds

Date

March 19, 2021 11:37 AM PDT

Description

Insect casing made of mud and stones, not unlike a caddis fly or river insect, but on a rock in an open field.

Photos / Sounds

Observer

easmeds

Date

June 14, 2018 10:36 AM PDT

Photos / Sounds

What

Non-biting Midges (Family Chironomidae)

Observer

molly2

Date

September 26, 2021 10:00 AM PDT

Photos / Sounds

Observer

garyj

Date

September 26, 2021 10:16 AM PDT

Description

Chironomid larvae

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

anudibranchmom

Date

September 25, 2021 08:16 AM PDT

Description

Checking up on the pair of unknown flying saucer-shaped galls; haven't changed much since last week (https://www.inaturalist.org/observations/95711804). On Scrub Oak.

Photos / Sounds

Observer

naturesarchive

Description

This is the Frangula californica fruit gall, which afaict is not described in the literature, but presumed Asphondylia sp. Here is the first observation of this gall while it was still growing: https://www.inaturalist.org/observations/94632311

Photos show an exit hole. The gall never grew to the same size that the spring flower galls grow to. It was about 1/4 - 1/3 the size of a normal fruit. I included photos of the gall cut open, as well as a medium/small normal fruit cut open for comparison.

Photos / Sounds

Observer

nettleman_

Date

August 26, 2021 12:07 PM PDT

Photos / Sounds

What

Spined Turban Gall Wasp (Cynips douglasii)

Observer

anudibranchmom

Date

September 21, 2021 10:43 AM PDT

Description

On Scrub Oak. @garth_harwood These again!

Photos / Sounds

What

Pear Gall Wasp (Andricus maculosus)

Observer

anudibranchmom

Date

September 21, 2021 10:13 AM PDT

Description

On Scrub Oak branches discarded by trail maintenance tree-trimming

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

anudibranchmom

Date

September 21, 2021 09:45 AM PDT

Description

Check these out @merav @garth_harwood @nancyasquith Two of these oddballs (flying saucers! bowler hats on pedestals!) on the same Scrub Oak leaf.

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

anudibranchmom

Date

September 21, 2021 09:45 AM PDT

Description

Check these out @merav @garth_harwood @nancyasquith Two of these oddballs (flying saucers! bowler hats on pedestals!) on the same Scrub Oak leaf.

Photos / Sounds

What

Crystalline Gall Wasp (Andricus crystallinus)

Observer

anudibranchmom

Date

September 21, 2021 09:37 AM PDT

Description

On Scrub Oak.