Photos / Sounds

What

Winged and Once-winged Insects (Subclass Pterygota)

Observer

catchang

Date

May 26, 2024 04:03 PM PDT

Description

On Madia gracilis

Photos / Sounds

What

Gall Midges (Subfamily Cecidomyiinae)

Observer

graysquirrel

Date

June 8, 2024 03:01 PM PDT

Description

gall on Madia

Photos / Sounds

What

Subconvex Oak (Quercus × subconvexa)

Observer

jeffdc

Date

June 9, 2024 05:08 PM PDT

Description

seems like a weird hybrid. a lot of Q durata nearby did not see any other white oaks. there were 2 of these trees.

Photos / Sounds

Observer

graysquirrel

Date

May 30, 2024 01:50 PM PDT

Photos / Sounds

Observer

cynestor

Date

April 2, 2024 04:27 PM PDT

Description

Hazardia squarrosa host. Dissected with probable gall former larva: https://www.inaturalist.org/observations/215328553

Photos / Sounds

What

Gall Midges (Subfamily Cecidomyiinae)

Observer

chyroptera

Date

May 5, 2024 10:00 AM PDT

Description

Gall on black hawthorn (Crataegus douglasii)
Opened up to see 5-6 white larva inside

Photos / Sounds

What

Winged and Once-winged Insects (Subclass Pterygota)

Observer

graysquirrel

Date

November 5, 2021 11:42 AM PDT

Description

Found a single galled leaf bud in a large stand of Holodiscus. It contained 3 larval chambers, but all were empty. I was unable to locate any other specimens, but I did find a different gall in the dried-up flower cluster remnants as well (also empty): https://www.inaturalist.org/observations/100374912

Photos / Sounds

What

Pinched Leaf Gall Wasp (Feron bakkeri)

Observer

lumenal

Date

September 30, 2022 05:56 PM PDT

Description

2mm gall on leaf underside of OR white oak

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

lumenal

Date

October 4, 2022 05:29 PM PDT

Description

Galls on leaf underside of OR white oak

Photos / Sounds

Observer

lumenal

Date

April 30, 2023 03:27 PM PDT

Description

OR white oak

Photos / Sounds

Observer

dwirtala

Date

April 27, 2024 11:29 AM PDT

Description

on Quercus garryana

Photos / Sounds

Observer

dwirtala

Date

April 28, 2024 11:08 AM PDT

Description

on Quercus garryana

Photos / Sounds

Observer

dwirtala

Date

April 24, 2024 12:20 PM PDT

Description

syn.Andricus pedicellatus on Quercus garryana

Photos / Sounds

Observer

arbonius

Date

April 19, 2024 03:34 PM PDT

Description

After a minute or so in the field, sharp-eyed @alice_abela spotted the inconspicuous little leaf gall about 2/5 the way up the leaf at left in the 1st photo here (just below the sinus of the largest lobe).

A higher-res view of that leaf gall appears in the 2nd photo; and of the stem gall in the 3rd photo.

The other photos show the underside of the leaf, and other views of the same leaf & stem galls...together with higher resolution crops. As far as I know, these were the only two types of galls we (Joyce, Alice, & I) found on the Palmer Oaks (see iNat obs here) off the old jeep road to Alpine Mine across the canyon from Clear Creek Road.

I'm speculating that the leaf gall & stem gall here may represent the associated (sexual) "spring generation" and (agamic) "fall generation" galls, respectively, for the undescribed cynipid species on Quercus palmeri whose stem gall I've referred to as the "Chef's Hat" or "Hot Air Balloon" gall in the recent posts below:

https://www.inaturalist.org/observations/211291919
https://www.inaturalist.org/observations/211303640
https://www.inaturalist.org/observations/211327036
https://www.inaturalist.org/observations/211333640
https://www.inaturalist.org/observations/211342096
https://www.inaturalist.org/observations/211336373
https://www.inaturalist.org/observations/211312302

The hypothesis is, again, only speculation at this point...and presumes among other things that this undescribed species indeed undergoes alternation of generations (though not all Cynipini do). But note that there are a number of cynipid species that have a sexual spring generation leaf gall followed by an agamic summer/fall generation stem gall — for instance: Bassettia ligni; Disholcaspis cinerosa (scroll down to 2nd & 3rd paragraphs under "Gall Wasps" here); and also Heteroecus dasydactyli and H. pacificus per the discussions on pp. 134-135 and pp. 137-138, respectively, of Russo(2021).

Photos / Sounds

What

Palmer's Oak (Quercus palmeri)

Observer

arbonius

Date

April 19, 2024 02:59 PM PDT

Description

On 10/3/74 James Griffin vouchered a discovery of Quercus palmeri in the Clear Creek area of San Benito County. At that time this was a new, isolated, northerly station for this unusual species. Griiffin returned about 3 weeks later with his botanist friend and CA oak maven John Tucker, and together they collected a number of additional vouchers. At that time Q. palmeri went by the name Q. dunni (after the remarkable late-1800's naturalist & collector George Dunn, see Jepson's brief bio here). Later Griffin & Tucker published a 1976 Madroño note on the newly discovered station. Motivated by the above, and a prior interest in this species, I was eager to look for these Palmer Oaks...and joined Joyce Gross & Alice Abela to search for them, almost 50 years after Griffin & Tucker's voucher collections.

After planning and walking a route with a number of promising point locations suggested by the Madroño note & voucher labels, we seemed to have struck-out on our "best candidate sites" and were becoming somewhat discouraged. But crossing a creek after the road we were on faded out, Joyce came upon a smaller trail following the SW side of the creek, and within a few hundred feet there were 3 or 4 clumps of Palmer Oaks growing on the steep bank above the trail :-). Note that zooming-in on the iNat inset map above, the observation icon appears to the NE of the trail shown there...but that's an artifact of errors in either my camera's GPS reading, the rendering of the trail on the map, or both. The rough location is correct, but the trail follows the SW side of the creek there...and the Palmer Oaks are rooted along the eroding upper edge of the tall bank just SW of the trail.

Palmer Oak is thought to be a relict species that had a more widespread and continuous distribution in Pleistocene and Pliocene times. Except for a few areas in southern California, northern Baja California, and Arizona (see SEINet map here), nowadays it is usually found in small isolated stands of a few individuals, which are often clonal groupings...and these stands are typically many miles apart (e.g. ten, twenty, or much more!). One particular clonal colony growing high on a granitic summit in the Jurupa Hills of Riverside County, CA has been estimated to be 13,000+ years old in this 2009 paper.

The plants here were growing in 3 or 4 "clumps" of scrub to small tree-like stature — each with one to several small, clustered, multiple trunks. They appeared less clonal in growth form than other Palmer Oak groupings I've seen...but may have been clonal. I have no idea how old these plants currently are, but they may have difficulty persisting for a truly long time into the future at this site — as their roots are being undercut by erosion of the bank above the old jeep road/trail and adjacent creek. This may be exacerbated in part by human impacts...recent motorcycle tracks were apparent, and a large branch had been cut off and was lying by the trail. (Some branches were overhanging the trail...and Palmer Oaks are notoriously rigidly-branched with leaves that are viciously stiff & spine-margined!)

In addition to the Jepson eFlora treatment for Q. palmeri, more info is available on the SEINet page here.

Photos / Sounds

Observer

susanmf

Date

April 24, 2024 11:14 AM PDT

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

dwirtala

Date

April 24, 2024 12:46 PM PDT

Description

on Quercus garryana

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

leslie_flint

Date

April 22, 2024 09:34 AM PDT

Description

Valley Oak

Photos / Sounds

Observer

bayareawalker

Date

March 28, 2024 02:38 PM PDT

Description

On valley oak. Deformed leaf or gall?
Headed to Forbes Lab.

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

teellbee

Date

March 2024

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

kdff

Date

March 26, 2024

Description

Well, this may be Andricus occultatus. The bud is deformed. There is obviously more than one gall in the bud--at least 4 exit holes on the top of the bud. I found a larva inside, which would mean at least 5 chambers.

Photos / Sounds

Observer

megachile

Date

March 23, 2024 11:55 PM CDT

Description

FU4
Buried in organza bag in plastic planter pot in Erik's backyard since April 2023.
https://www.inaturalist.org/observations/153403128

Photos / Sounds

Observer

axarus

Date

February 10, 2024 02:35 PM PST

Photos / Sounds

What

Collared Kingfisher (Todiramphus chloris)

Observer

blueskieshk

Date

December 20, 2023 03:35 PM +08

Photos / Sounds

Observer

talibzuo

Date

December 2023

Place

Missing Location

Photos / Sounds

What

Beaked Twig Gall Wasp (Burnettweldia plumbella)

Observer

chilipossum

Date

August 23, 2023 11:26 AM PDT

Description

On Leather oak, Quercus durata

Photos / Sounds

What

Winged and Once-winged Insects (Subclass Pterygota)

Observer

milliebasden

Date

June 9, 2021 03:00 PM PDT

Tags

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

cynestor

Date

September 7, 2023 03:06 PM PDT

Description

Weld's unknown axil bud gall #191? Found empty by start of summer, he says. Looks like an egg in an egg cup. Holes look like they were cut from outside, given the "shell" bits scattered on the surface.

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

ocean_beach_goth

Date

September 4, 2023 03:51 PM PDT

Description

Canyon live oak
Pretty sure this matches this:

https://www.gallformers.org/gall/2055

q-vacciniifolia-petiole-gall
Preserved in EtOH for Cynipini Larval Sequencing Project

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

dlbowls

Date

September 5, 2023 08:43 AM PDT

Description

On Canyon Live Oak.

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

leslie_flint

Date

August 18, 2023 01:36 PM PDT

Description

Huckleberry Oak; not entirely sure what this is.

Photos / Sounds

What

Woolly Gall Wasp (Heteroecus dasydactyli)

Observer

chilipossum

Date

August 15, 2023 07:26 PM PDT

Description

On Canyon Live Oak, Quercus chrysolepis

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

leslie_flint

Date

August 1, 2023 12:17 PM PDT

Description

If this is the stamen gall then it was with the flower gall observed earlier this summer (second photo)

Photos / Sounds

Date

August 11, 2023 12:26 PM PDT

Description

On Horkelia sp.

Tags

Photos / Sounds

Observer

ctrubo

Date

July 29, 2023 02:33 PM PDT

Description

Maybe?

Photos / Sounds

What

Striped Volcano Gall Wasp (Feron atrimentum)

Observer

ocean_beach_goth

Date

July 26, 2023 05:42 PM PDT

Description

Correction: on Epling's Oak
Quercus × eplingii

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

aforbes10

Date

July 12, 2023 05:00 PM PDT

Description

On Quercus lobata

Photos / Sounds

Observer

graysquirrel

Date

July 5, 2023

Description

On runners of Fragaria vesca

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

tiny_plants

Date

July 1, 2023 09:20 PM PDT

Photos / Sounds

What

Beaked Spindle Gall Wasp (Heteroecus pacificus)

Observer

keirmorse

Date

July 3, 2023 04:21 PM PDT

Description

Gall on Quercus chrysolepis

Photos / Sounds

Observer

graysquirrel

Date

June 23, 2023 12:27 PM PDT

Description

on Microseris paludosa

Photos / Sounds

Observer

megachile

Date

June 5, 2023

Description

Photos / Sounds

Observer

megachile

Date

March 13, 2023

Description

NO1 #19-23
Collected on 2/18/2023 by Noriko Ito
https://www.inaturalist.org/observations/149423290
Emerged on 3/13-15/2023

Photos / Sounds

What

Fimbriate Gall Wasp (Andricus opertus)

Observer

megachile

Date

May 18, 2023

Description

Photos / Sounds

Observer

megachile

Date

May 18, 2023

Description

NO17R
Collected by Noriko Ito on 5/3/2023
https://www.inaturalist.org/observations/162423548
Emerged 5/18-21/2023

Photos / Sounds

Observer

megachile

Date

May 6, 2023

Description

NO16Q
collected by Noriko Ito on 4/23/2023
https://www.inaturalist.org/observations/156362823
emerged on 5/6-7/2023
https://www.inaturalist.org/observations/160226900

Photos / Sounds

Observer

megachile

Date

April 23, 2023

Description

NO14O
collected by Noriko Ito on 4/23/2023 from inside rearing bags placed over leaves of Q lobata
https://www.inaturalist.org/observations/159337940

Photos / Sounds

Observer

megachile

Date

April 25, 2023

Description

NO13N
collected by Noriko Ito on 4/23/2023
Emerged 4/25/2023
https://www.inaturalist.org/observations/156667469

Photos / Sounds

Observer

megachile

Date

April 24, 2023

Description

NO12L
collected by Noriko Ito on 4/23/2023
https://www.inaturalist.org/observations/156363704
Emerged 4/24-26/2023

Photos / Sounds

Observer

megachile

Date

April 16, 2023

Description

NO10J
collected by Noriko Ito on 4/16/2023
Emerging 4/16-18/2023
https://www.inaturalist.org/observations/155371516

Photos / Sounds

What

Striped Volcano Gall Wasp (Feron atrimentum)

Observer

megachile

Date

April 21, 2023

Description

NO9I
collected by Noriko Ito on 4/16/2023
Emerged on 4/21/2023
https://www.inaturalist.org/observations/156805568

Photos / Sounds

Observer

megachile

Date

April 16, 2023

Description

NO8H
collected by Noriko Ito on 4/16/2023
https://www.inaturalist.org/observations/155396918

Photos / Sounds

Observer

megachile

Date

April 18, 2023

Description

Photos / Sounds

What

Spined Turban Gall Wasp (Cynips douglasii)

Observer

megachile

Date

April 13, 2023

Description

Photos / Sounds

Observer

megachile

Date

April 27, 2023

Description

NO5E
collected by Noriko Ito on 4/1/2023
https://www.inaturalist.org/observations/153392735
Emerged 4/27-29/2023

Photos / Sounds

Observer

megachile

Date

April 9, 2023

Description

NO5D
collected by Noriko Ito on 4/1/2023
https://www.inaturalist.org/observations/153392735
Emerged 4/9-15/2023

Photos / Sounds

What

Jumping Gall Wasp (Neuroterus saltatorius)

Observer

megachile

Date

April 9, 2023

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

megachile

Date

April 2, 2023

Description

NO3B
collected by Noriko Ito on 4/2/2023
https://www.inaturalist.org/observations/153767560

Photos / Sounds

Observer

megachile

Date

April 2, 2023

Description

Photos / Sounds

Observer

leslie_flint

Date

April 15, 2023 08:42 AM PDT

Description

on Valley Oak; have not seen this before; swelling at stem and petiole

Tags

Photos / Sounds

Observer

chyroptera

Date

March 26, 2020 02:40 PM PDT

Description

The swelling of the flower tissue on Valley oak (Quercus lobata). There were many of these swellings. Sycamore grove park.

Photos / Sounds

What

Gall Wasps (Family Cynipidae)

Observer

jaykeller

Date

July 17, 2016 10:57 AM PDT

Photos / Sounds

Observer

chilipossum

Date

July 6, 2022 10:19 AM PDT

Photos / Sounds

Observer

dlbowls

Date

January 2022

Description

I collected this gall from a Coast Live Oak in October of 2021. I kept it in a container with the end of the branch in a little bit of water that I changed weekly. On January 21 2022 when I opened it to change the water, I found a hole in the gall and the wasp shown.

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

suburbanpoison

Date

April 22, 2023 11:51 AM PDT

Description

On Canyon Live Oak

Photos / Sounds

What

Winged and Once-winged Insects (Subclass Pterygota)

Observer

chilipossum

Date

February 25, 2023 05:42 PM PST

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

michaelvoeltz

Date

April 12, 2023 09:13 AM PDT

Description

Observed on valley oak (Q. lobata)

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

garth_harwood

Date

March 16, 2022 06:39 PM PDT

Description

Host: CA Scrub Oak. An undescribed species?

Tags

Photos / Sounds

Observer

suburbanpoison

Date

April 20, 2023 07:08 PM PDT

Description

On blue oak

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

suburbanpoison

Date

April 20, 2023 07:12 PM PDT

Description

On blue oak

Photos / Sounds

Observer

suburbanpoison

Date

April 16, 2023 10:35 AM PDT

Description

On Blue Oak. Sexgen

Photos / Sounds

What

Two-horned Gall Wasp (Dryocosmus dubiosus)

Observer

anudibranchmom

Date

April 17, 2023 02:43 PM PDT

Description

Dozens of identical-looking adult gall wasps crawling on Dryocosmus dubiosus galls, some with exit holes. Galls present on this same Coast Live Oak include (tentative IDS): Aceria mackiei, Dasineura silvestrii, and lots of Dryocosmus dubiosus.

This observation is for the adult wasps; could be newly-emerging Dryocosmus dubiosus, or they could be another species, perhaps parasitic.

Photos / Sounds

Observer

megachile

Date

March 20, 2023

Description

NO1 #27/30
Collected on 2/18/2023 by Noriko Ito
https://www.inaturalist.org/observations/149423290
Emerged on 3/20/2023

Photos / Sounds

Observer

megachile

Date

February 23, 2023

Description

NO1 #1
Collected on 2/18/2023 by Noriko Ito
https://www.inaturalist.org/observations/149423290
Emerged on 2/23/2023

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

michaelvoeltz

Date

February 12, 2022 12:02 PM PST

Photos / Sounds

What

Urchin Gall Wasp (Cynips quercusechinus)

Observer

chyroptera

Date

September 3, 2022 11:20 AM PDT

Description

This tree had a zillion
on blue oak

Photos / Sounds

Observer

megachile

Date

March 2, 2023 04:59 PM CST

Description

ON2

Female collected at a blacklight sheet by @jcochran706 on 3/1/2023

https://www.inaturalist.org/observations/149998977

I provided buds of Q fusiformis, macrocarpa, laceyi, sinuata, muehlenbergii, and stellata, and she went right for the Q fusiformis buds and oviposited in at least two of them.

Photos / Sounds

Observer

naturesarchive

Date

February 13, 2023 06:31 PM PST

Description

Mystery gall from Coast Live Oak. See in situ observation here: https://www.inaturalist.org/observations/148539706

Sorry - I was using the inches side of the ruler. I wasn't thinking.

Photos / Sounds

Observer

naturesarchive

Date

February 11, 2023 09:14 AM PST

Description

On coast live oak. I think these are galls - but I suppose they could be new growth. [edit: they are in fact galls]. However, they don't look like buds I'm familiar with, and I only found these on one tree [edit: after multiple re-visits, I found these on two trees]. This tree had a couple old Amphibolips quercuspomiformis, but the spring form of that gall is entirely different than this.

See https://www.inaturalist.org/observations/148539708 for what may be old forms of this gall, found nearby on the same tree.

See https://www.inaturalist.org/observations/148848266 for dissected gall

Separate observation for the winter ants:
https://www.inaturalist.org/observations/148539707

Photos / Sounds

What

Subconvex Oak (Quercus × subconvexa)

Observer

samzanita

Date

February 4, 2023 07:49 AM PST

Description

Not sure if Q. douglasii or Q. x eplingii

Photos / Sounds

What

Kernel Flower Gall Wasp (Callirhytis serricornis)

Observer

merav

Date

April 13, 2019 04:43 PM PDT

Photos / Sounds

What

Spined Turban Gall Wasp (Cynips douglasii)

Observer

cynestor

Date

September 9, 2022 01:55 PM PDT

Description

These look like they want to be C. douglasii but seem too thin walled at top and too stalky at the bottom. Similar looking observations: https://www.inaturalist.org/observations/136453193 and https://www.inaturalist.org/observations/142877075

Photos / Sounds

What

Spined Turban Gall Wasp (Cynips douglasii)

Observer

newtpatrol

Date

September 15, 2021 05:17 PM PDT

Description

On Valley Oak (Quercus lobata)

Photos / Sounds

What

Live Oak Bud Gall Wasp (Callirhytis quercusagrifoliae)

Observer

garth_harwood

Date

June 1, 2020 10:15 PM PDT

Description

Host: Coast Live Oak. Bisexual spring generation blister galls with exit holes apparent.

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

merav

Date

January 8, 2023 03:10 PM PST

Description

On canyon live oak

Photos / Sounds

What

Woolly Gall Wasp (Heteroecus dasydactyli)

Observer

finatic

Date

June 4, 2016 03:17 PM PDT

Description

San Diego County, California, US

Photos / Sounds

What

Golden Gall Wasp (Heteroecus melanoderma)

Observer

garth_harwood

Date

September 14, 2020 02:15 PM PDT

Description

Host: Canyon Live Oak. Final images show gall after light rubbing; hairs were easily removed.

Photos / Sounds

What

Woolly Gall Wasp (Heteroecus dasydactyli)

Observer

rltrees

Date

September 1, 2019 03:49 PM PDT

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

nancyasquith

Date

September 9, 2021 04:46 PM PDT

Description

Sexual generation on canyon live oak

Photos / Sounds

Observer

lumenal

Date

October 9, 2022 05:55 PM PDT

Description

A bit more than 1cm long gall on twig end of chinquapin

Photos / Sounds

What

Oak Gall Wasps (Tribe Cynipini)

Observer

kelptaylor

Date

December 26, 2022 11:27 AM PST

Description

Gall on oak

Photos / Sounds

What

Arthropods (Phylum Arthropoda)

Observer

chilipossum

Date

November 28, 2022 02:07 PM PST

Photos / Sounds

Observer

graysquirrel

Date

October 14, 2022 02:23 PM PDT

Description

Stem galls found on trees that also had the n-densiflorus-tanoak-fuzzy-gall on leaves. Pulling both apart revealed identical gall structures and identical larvae. The larval chambers seemed typical for a lot of midge galls, being small "pockets" in the gall tissue which aren't actually sealed shut, and can be easily opened along the seam.

Photos / Sounds

Observer

leslie_flint

Date

November 12, 2022 09:40 AM PST

Description

Canyon Live Oak

Photos / Sounds

Observer

anudibranchmom

Date

October 27, 2022 09:34 PM PDT

Description

Flexing :-)

Photos / Sounds

What

Gall and Rust Mites (Family Eriophyidae)

Observer

graysquirrel

Date

September 30, 2022 02:01 PM PDT