Photos / Sounds

What

White Rabbit-Tobacco (Pseudognaphalium leucocephalum)

Observer

nvhamlett

Date

April 13, 2024 02:03 PM PDT

Description

Next to the Cobal Canyon Trail by where it crosses a little stream in the Claremont Hills Wilderness Park.

Photos / Sounds

What

Dusky Flycatcher (Empidonax oberholseri)

Observer

vanpiersz

Date

April 13, 2024 02:22 PM PDT

Photos / Sounds

What

Nuttall's Woodpecker (Dryobates nuttallii)

Observer

nvhamlett

Date

March 22, 2024 04:55 PM PDT

Photos / Sounds

What

Black Swift (Cypseloides niger)

Observer

samzhang

Date

July 30, 2023 07:28 PM PDT

Photos / Sounds

What

Eastern Wood-Pewee (Contopus virens)

Observer

licinio

Date

November 10, 2021 01:45 PM -05

Photos / Sounds

What

Olive-sided Flycatcher (Contopus cooperi)

Observer

nutsaboutkitties

Date

September 22, 2023 08:16 AM PDT

Photos / Sounds

What

Cactus Wren (Campylorhynchus brunneicapillus)

Observer

jmorton

Date

April 13, 2024 10:13 AM PDT

Photos / Sounds

What

Silver Garden Orbweaver (Argiope argentata)

Observer

nvhamlett

Date

August 28, 2020 11:10 AM PDT

Description

Silver Garden Orbweaver on its web on California Buckwheat (Eriogonum fasciculatum) beside Webb Canyon Road in the Claremont Hills Wilderness Park.

Photos / Sounds

What

Bobcat (Lynx rufus)

Observer

nvhamlett

Date

April 13, 2024 02:06 PM PDT

Description

Walking down the Cobal Canyon Trail in the Claremont Hills Wildernss Park. The bobcat was first headed away from us, started to go off the side of the trail, changed its mind, and turned around and came toward us for a ways before going off the side of the trail in up the hill.

Photos / Sounds

What

Swainson's Hawk (Buteo swainsoni)

Observer

scottmarnoy

Date

March 19, 2024 04:57 PM PDT

Description

A kettle of about 50 Swainson's Hawks were flying west along the foothills in Claremont.

Photos / Sounds

What

Padre's Shooting Star (Primula clevelandii)

Observer

scottmarnoy

Date

March 11, 2024 03:36 PM PDT

Description

Growing on a steep east-facing slope in Cobal Canyon on thin soil overlying granite. Recent subsidence may have made them more easily seen.

Photos / Sounds

What

White-striped Longtail (Chioides albofasciatus)

Observer

adirado

Date

February 22, 2024 03:38 PM CST

Description

Erratic flight. I observed this butterfly trying to land on tall grasses but it was consistently and aggressively chased away by multiple other species -- especially Common Buckeyes.

Photos / Sounds

What

California Scrub Oak (Quercus berberidifolia)

Observer

keirmorse

Date

January 19, 2024 12:23 PM PST

Photos / Sounds

What

Disc Gall Wasp (Feron parmula)

Observer

keirmorse

Date

January 11, 2024 02:15 PM PST

Description

On Quercus durata var. gabrielensis and possible hybrids

Photos / Sounds

Observer

keirmorse

Date

November 26, 2023 03:08 PM PST

Description

On Artemisia californica

Photos / Sounds

What

Marbled Oak Dagger (Acronicta marmorata)

Observer

naturecandids

Date

April 8, 2022 10:56 PM PDT

Photos / Sounds

What

Sculpted Puffball (Calvatia sculpta)

Observer

nvhamlett

Date

December 24, 2023 01:17 PM PST

Description

This appeared to be an unusual mushroom. About 2” in diameter. Growing in a bank next to the Cobal Canyon Trail.

Photos / Sounds

Observer

boazsolorio

Date

December 25, 2023 11:39 PM PST

Photos / Sounds

What

Anthemid Aphids (Genus Macrosiphoniella)

Observer

keirmorse

Date

November 29, 2023 10:19 AM PST

Description

On Baccharis salicifolia

Photos / Sounds

What

Orocopia Mountains Spurge (Euphorbia jaegeri)

Observer

keirmorse

Date

December 3, 2023 08:58 AM PST

Photos / Sounds

What

Blackberry Leafhopper (Dikrella californica)

Observer

keirmorse

Date

November 28, 2023 04:14 PM PST

Description

On Ribes aureum

Photos / Sounds

Observer

nvhamlett

Date

July 12, 2022 10:03 AM PDT

Description

A few days ago, a took a few photos of a Pompilid on Narrowleaf Milkweed that seemed rather unusual – it had red on the thorax but was otherwise all black. (The head wasn't visible in the photos.)

Today I went back to see if I could find some and get better photos. In my experience, this approach is often futile, but in this case, it panned out! There on the exact same clump of milkweed was one of the interesting wasps, and it was very cooperative about being photographed. Although it hasn't yet been reported in LA County either on iNat or on BugGuide, I think with this color pattern, this wasp can only be Notocyphus dorsalis.

Photos / Sounds

What

White-banded Crab Spider (Misumenoides formosipes)

Observer

boazsolorio

Date

October 16, 2023 11:39 AM PDT

Photos / Sounds

What

Acute Bladder Snail (Physella acuta)

Observer

bee_ecology

Date

October 1, 2023 02:06 PM PDT

Photos / Sounds

What

Spotted Bee Fly (Anthrax irroratus)

Observer

nvhamlett

Date

October 3, 2023 10:03 AM PDT

Description

On Coast Morning Glory (Calystegia macrostegia) beside the Cobal Canyon Trail in the Claremont Hills Wilderness Park. All the field marks appear to fit those listed in BugGuide for identification of this species (https://bugguide.net/node/view/6582).

Photos / Sounds

Observer

nvhamlett

Date

October 5, 2023 08:56 AM PDT

Description

Spotted in the non-native grasses in the Johnson's Pasture area of the Claremont Hills Wilderness Park.

The iNat Computer Vision suggested Caenurgia togataria, and this seems right to me. We see this species frequently in the non-native grassland at the Bernard Field Station.

Photos / Sounds

What

Yellow-legged Mud-dauber Wasp (Sceliphron caementarium)

Observer

nvhamlett

Date

September 24, 2023 12:11 PM PDT

Description

On leaf and bark litter in the Johnson's Pasture area of the Claremont Hills Wilderness Park.

Photos / Sounds

Observer

nvhamlett

Date

September 24, 2023 12:37 PM PDT

Description

On Johnston's Honeysuckle in the Johnson's Pasture area of the Claremont Hills Wilderness Park.

Not a great photo, but identifiable. This is the first Clearwing Moth reported in the Park, but I would expect there to be others.

Photos / Sounds

What

Typical Green Lacewings (Subfamily Chrysopinae)

Observer

aaron_echols

Date

September 18, 2023 05:26 PM PDT

Photos / Sounds

What

Hairy Horsebrush (Tetradymia comosa)

Observer

bspeak

Date

May 29, 2023 07:09 PM PDT

Photos / Sounds

Observer

keirmorse

Date

May 7, 2022 02:54 PM PDT

Description

On Eucalyptus. Apparenlty laying eggs on Glycaspis.

Photos / Sounds

What

Texas Range Grasshopper (Psoloessa texana)

Observer

nvhamlett

Date

November 3, 2020 11:45 AM PST

Description

In Johnson's Pasture Road in the Claremont Hills Wilderness Park. I think this is a Texas Range Grasshopper (Psoloessa texana), and iNat's computer vision agrees.

I wonder why it's called the "Texas" Range Grasshopper? On iNat, there are more than 10 times as many observations from California as from Texas. Of course, that might reflect the abundance of iNat users, rather than the abundance of the grasshoppers. On BugGuide, there are about equal numbers of observations from California and Texas.

Photos / Sounds

Observer

kueda

Date

October 6, 2019 10:02 AM PDT

Photos / Sounds

What

Ceanothus Silk Moth (Hyalophora euryalus)

Observer

bee_ecology

Date

July 1, 2023 09:49 AM PDT

Photos / Sounds

Observer

scottmarnoy

Date

October 15, 2022 04:15 PM PDT

Description

Pebble nest glued to twig of shrub oak on Gayle Mountain. See observation
https://www.inaturalist.org/observations/138932743

Photos / Sounds

What

Barn Owl (Tyto alba)

Observer

jadenvc

Date

February 18, 2018 08:54 AM PST

Photos / Sounds

What

Merlin (Falco columbarius)

Observer

scottmarnoy

Date

December 15, 2018 02:57 PM PST

Description

Perennial visitor to Johnson's Pasture in the winter.

Photos / Sounds

What

Northern Flicker (Colaptes auratus)

Observer

scottmarnoy

Date

June 9, 2022 03:01 PM PDT

Photos / Sounds

What

Northern Harrier (Circus hudsonius)

Observer

nvhamlett

Date

March 14, 2021 04:42 PM PDT

Description

Northern Harrier hunting in the Johnson's Pasture area of the Claremont Hills Wilderness Park. It stayed in this area for at least an hour.

Photos / Sounds

What

Hermit Thrush (Catharus guttatus)

Observer

andy71

Date

March 20, 2021 01:16 PM PDT

Photos / Sounds

What

Great Horned Owl (Bubo virginianus)

Observer

nvhamlett

Date

September 2, 2019 08:17 AM PDT

Description

This owl flushed while we were mapping invasive plants in Sycamore Canyon, in the Claremont Hills Wilderness Park. It flew silently into this eucalyptus tree and proceeded to keep an eye on us until we left.

Photos / Sounds

Observer

cassandramagana

Date

June 17, 2020 07:54 PM PDT

Photos / Sounds

What

California Ground Squirrel (Otospermophilus beecheyi)

Observer

adirado

Date

September 9, 2023 10:33 AM PDT

Photos / Sounds

What

Desert Firetail (Telebasis salva)

Observer

guyincognito

Date

September 9, 2023 09:17 AM PDT

Photos / Sounds

What

Common Desert Centipede (Scolopendra polymorpha)

Observer

elledesmarteau

Date

September 4, 2023 09:30 AM PDT

Photos / Sounds

Observer

wildgifts

Date

December 23, 2022 02:58 PM PST

Photos / Sounds

What

Mule Deer (Odocoileus hemionus)

Observer

rozhelfand

Date

August 15, 2023 03:33 PM PDT

Description

Seems to have a very large tick above its eye.

Photos / Sounds

Date

July 22, 2023 06:07 AM HST

Photos / Sounds

What

Pale Swallowtail (Papilio eurymedon)

Observer

guyincognito

Date

August 4, 2023 05:08 PM PDT

Photos / Sounds

What

Chickweed Geometer Moth (Haematopis grataria)

Observer

karsennotcarson

Date

July 2023

Photos / Sounds

What

Longhorn-cuckoo Bees (Genus Triepeolus)

Observer

nvhamlett

Date

July 11, 2023 08:20 AM PDT

Description

Resting on Woollypod Milkweed (Asclepias eriocarpa) in the Johnson's Pasture area of the Claremont Hills Wilderness Park.

Photos / Sounds

What

Tortricine Leafroller Moths (Subfamily Tortricinae)

Observer

bee_ecology

Date

July 15, 2023 09:05 AM PDT

Photos / Sounds

What

Nuttall's Woodpecker (Dryobates nuttallii)

Observer

adirado

Date

June 23, 2023 12:30 PM PDT

Photos / Sounds

What

Common Patterned Ant-mimic Ground Spider (Sergiolus montanus)

Observer

bee_ecology

Date

July 1, 2023 09:16 AM PDT

Photos / Sounds

What

San Bernardino Merriam's Kangaroo Rat (Dipodomys merriami ssp. parvus)

Observer

mikaelromich

Date

August 2020

Description

This observation is for the prey.

Photos / Sounds

What

Gray Fox (Urocyon cinereoargenteus)

Observer

redphalarope

Date

June 25, 2023 05:46 PM PDT

Photos / Sounds

What

Ergatogyne Trailing Ant (Monomorium ergatogyna)

Observer

naturephotosuze

Date

June 19, 2023 10:50 AM PDT

Description

Sepulveda Basin

Photos / Sounds

What

Plummer's Mariposa Lily (Calochortus plummerae)

Observer

nvhamlett

Date

June 13, 2022 10:30 AM PDT

Description

While looking for something else, I stumbled on this area with So. Many. Plummer's Mariposa Lilies. There were probably several hundred of them in a small area. It was hard to walk without stepping on them. Wow!

Photos / Sounds

What

American Black Bear (Ursus americanus)

Observer

moonlightrunner

Date

June 18, 2023 06:05 AM PDT

Photos / Sounds

What

Southwestern Blackhead Snake (Tantilla hobartsmithi)

Observer

boazsolorio

Date

May 2023

Photos / Sounds

What

Grass Miner Moths (Family Elachistidae)

Observer

david99

Date

May 22, 2023 09:32 PM PDT

Photos / Sounds

What

Woodchip Morel (Morchella rufobrunnea)

Observer

madiblaney

Date

March 30, 2023 02:02 PM PDT

Photos / Sounds

What

Long-tailed Weasel (Neogale frenata)

Observer

grnleaf

Date

May 18, 2023 05:54 PM PDT

Photos / Sounds

What

Zebra Swallowtail (Eurytides marcellus)

Observer

debracraig

Date

April 28, 2023 12:34 PM CDT

Photos / Sounds

What

Wolf Spiders (Family Lycosidae)

Observer

nvhamlett

Date

May 6, 2023 04:27 PM PDT

Description

Mama wolf spider with her babies crossing the Burbank Trail in the Claremont Hills Wilderness Park.

Photos / Sounds

What

Dicots (Class Magnoliopsida)

Observer

austexmurf

Date

January 25, 2023 12:08 PM PST

Photos / Sounds

What

Six-spotted Orbweaver (Araniella displicata)

Observer

bee_ecology

Date

April 29, 2023 11:04 AM PDT

Photos / Sounds

What

Pale Swallowtail (Papilio eurymedon)

Observer

cicruz

Date

April 29, 2023 10:54 AM PDT

Photos / Sounds

What

Western Wood Cockroach (Parcoblatta americana)

Observer

boazsolorio

Date

April 29, 2023 09:21 AM PDT

Photos / Sounds

Observer

vmanzo15

Date

April 28, 2023 04:49 PM PDT

Description

this parasitoid wasp was found early on in the hiking trails of the claremont hills.

order name: hymenoptera (wasps)

Photos / Sounds

What

Mojave Yucca (Yucca schidigera)

Observer

singram

Date

April 3, 2023

Description

Mojave yucca, Yucca shidigera, with flowers and buds, Cottonwood Springs, Joshua Tree N.P., CA

Photos / Sounds

What

Neotropical Stick Grasshoppers (Family Proscopiidae)

Observer

ninangel

Date

January 17, 2021 05:30 PM -03

Description

Encontrado en Cerro grande, La Serena

Photos / Sounds

What

Mojave Yucca Moth (Tegeticula mojavella)

Observer

dstrauch

Date

April 2, 2023 07:09 PM PDT

Description

On Yucca schidigera (= Y. mohavensis) (thanks euproserpinus for asking), active at dusk with moon close to full.

Photos / Sounds

What

Purple Mat (Nama demissa)

Observer

gabimclean

Date

April 6, 2023 11:19 AM PDT

Photos / Sounds

What

California Newt (Taricha torosa)

Observer

nvhamlett

Date

March 28, 2023 03:25 PM PDT

Description

After the copious recent rains, water was rushing in the little seasonal stream that runs next to the Pomello Trail in the Claremont Hills Wilderness Park. At one point, a little dam of sorts blocks the flow of water, and these newts were in the resulting pool. I'm not sure how many were there – at least half a dozen or so. The photos are not all of the same individual – I gave up trying to keep track of who was who.

Photos / Sounds

What

Northern Flicker (Colaptes auratus)

Observer

dunbarb77777

Date

February 10, 2023 01:43 PM PST

Photos / Sounds

What

California Gnatcatcher (Polioptila californica)

Observer

thomasabenson

Date

January 21, 2023 08:56 AM PST

Photos / Sounds

What

Northern Harrier (Circus hudsonius)

Observer

aaron_echols

Date

January 8, 2023 12:47 PM PST

Photos / Sounds

What

Sage Plume Moth (Anstenoptilia marmarodactyla)

Observer

keirmorse

Date

December 25, 2022 02:34 PM PST

Photos / Sounds

What

Texas Striped Sweat Bee (Agapostemon texanus)

Observer

nvhamlett

Date

August 11, 2022 10:14 AM PDT

Description

On California Aster (Corethrogyne filaginifolia) next to Johnson's Pasture Road in the Claremont Hills Wilderness Park.

Photos / Sounds

Observer

keirmorse

Date

May 7, 2022 03:07 PM PDT

Description

On Carduus pycnocephalus

Photos / Sounds

What

Soft-winged Flower Beetles (Family Melyridae)

Observer

keirmorse

Date

June 15, 2022 08:48 AM PDT

Description

On Calochortus plummerae

Photos / Sounds

What

Fractured Western Snout (Diastictis fracturalis)

Observer

nvhamlett

Date

April 27, 2022 01:11 PM PDT

Description

On Erodium cicutarium in a disturbed area by the Via Santa Catarina entrance to the Johnson's Pasture area of the Claremont Hills Wilderness Park.

Photos / Sounds

What

Sleeping Combseed (Pectocarya penicillata)

Observer

keirmorse

Date

February 20, 2022 02:11 PM PST

Photos / Sounds

What

Hartweg's Climbing Milkweed (Funastrum heterophyllum)

Observer

wildgifts

Date

March 6, 2022 05:25 PM PST

Photos / Sounds

What

Frillworts (Genus Fossombronia)

Observer

keirmorse

Date

January 16, 2022 02:18 PM PST

Photos / Sounds

What

Southern California Clematis (Clematis pauciflora)

Observer

nvhamlett

Date

May 9, 2022 03:32 PM PDT

Description

Recently the question was raised as to whether all the Clematis in the Wilderness Park were C. lasiantha, which is the only Clematis identified to species in the Park, or whether other species were also present.

In the last week, several observations of Clematis have been reported along a little informal trail that loops out to the west from Johnson’s Pasture Road, and identifiers wondered whether two observations were C. pauciflora instead of C. lasiantha .

I went out today to see if I could resolve this question. So far as I could tell, there are just two Clematis plants along this trail – one near the westernmost point of the trail, and one on the north side*. Both plants are quite large and extend something like 15 ft along the trail, so observations of one plant may not be in exactly the same location. I photographed close-ups of the fruit of both plants and conclude that we have two different species.

According to the Jepson key, the two species in question are distinguished by this couplet:

  1. Sepals hairy abaxially, adaxially; fruit body hairy —> C. lasiantha
    2' Sepals hairy abaxially, glabrous adaxially; fruit body glabrous —> C. pauciflora
    The sepals are long, but fruits are present, so we can look at the fruit body.

The observation shown here is of the plant near the westernmost tip of the path. As you can see, there are no detectable hairs on the fruit body. I conclude that this plant is C. pauciflora.

Two other observations (https://www.inaturalist.org/observations/114279431 and
https://www.inaturalist.org/observations/114280127) are also near the westernmost tip of the path. Questions were raised about the identity of both. I believe they are the same plant as this observation and are thus also C. pauciflora.

The observation of the plant on north side, which definitely appears to be C. lasiantha, and its discussion are here - https://www.inaturalist.org/observations/116379445.

*There is one additional Clematis observation that appears to be down the slope from the westernmost tip of the path, and I did not check this one out.

@keirmorse, @grmorrison, @carolblaney, your thoughts?

Photos / Sounds

What

Woodland Skipper (Ochlodes sylvanoides)

Observer

aaron_echols

Date

August 7, 2022 01:44 PM PDT
Insects

Photos / Sounds

What

Insects (Class Insecta)

Observer

david99

Date

August 8, 2022 09:46 AM PDT

Description

Eggs on euphorbia leaves

Photos / Sounds

What

Yellow Admiral (Vanessa itea)

Date

March 2019

Photos / Sounds

What

Common Poorwill (Phalaenoptilus nuttallii)

Observer

scottmarnoy

Date

July 16, 2022 05:18 AM PDT

Description

Calling over Wilderness Park at 0518. Spotted Towhee and Mourning Dove also heard

Photos / Sounds

What

Monarch (Danaus plexippus)

Observer

nvhamlett

Date

June 17, 2022 08:49 AM PDT

Description

I was excited to see two 4th instar Monarch larvae on this Narrowleaf Milkweed (Asclepias fascicularis) in the Johnson's Pasture area of the Claremont Hills Wilderness Park.

At first glance, I thought the larva in the second photo was 3rd instar, but then I realized I was looking at the tail. The head is at the bottom of the photo.

Photos / Sounds

What

Variable Checkerspot (Euphydryas chalcedona)

Observer

madiblaney

Date

June 6, 2022 11:36 AM PDT

Photos / Sounds

Observer

nvhamlett

Date

June 3, 2022 10:27 AM PDT

Description

On Woollypod Milkweed (Asclepias eriocarpa) in the Johnson's Pasture area of the Claremont Hills Wilderness Park.

Photos / Sounds

What

Oak Jumping Spider (Metaphidippus manni)

Observer

keirmorse

Date

February 27, 2020 01:46 PM PST

Description

On Malacothamnus

Photos / Sounds

Observer

david99

Date

April 18, 2022 09:25 PM PDT

Photos / Sounds

What

Cloth-of-gold Crocus (Crocus angustifolius)

Date

April 2, 2022 04:59 PM MSK

Photos / Sounds

What

Swallow-winged Puffbird (Chelidoptera tenebrosa)

Observer

debracraig

Date

February 27, 2022 02:37 PM MST

Description

Perched at edge of Pilchicocha Lake

Photos / Sounds

What

Harris's Hawk (Parabuteo unicinctus)

Observer

mlakome

Date

February 1, 2022 09:45 AM MST

Description

Four individuals visited us this morning, appeared to be to adults and two large juveniles.

Photos / Sounds

What

Great Horned Owl (Bubo virginianus)

Observer

guyincognito

Date

February 21, 2022 02:23 PM PST