Yuba Pass/Sierra Nevada Field Campus

Located just up the road from Bassett's Station on Hwy 49, this Field Campus - owned by San francisco State University - has become a part of my Count Session for a decade now. One of the Rites of Passage for any
new Californian Lepidopterist is Paul Opler's "Butterflies of the High Sierra"
class taught here ever year and was my first exposure to this incredible place. The class is out in the field all day with Dr. Opler and his wife Evi
and ultimately sees and learns over 80 species in five days.
A few years back I expanded my entomological knowledge by taking Dr. John Hafernik's "Entomology of the Sierra" - also a fantastic class. Something so great about being afield all day then coming back to having a full meal prepared for you!
I continue to go each season to partake in the YUBA PASS Butterfly Count.
It's always slightly frustrating to step up to the 8 species of Speyeria
blasting about that one doesn't deal with for the rest of the year, but the beauty and the spirit of everyone there is magical.
Worked on my High Sierra wildflowers this year. The meadow near my tent was a magnificent classroom for this new focus.
My favorite moment this season: at a moth sheet/light with Dr. Jerry Powell learning my aquatic insects...and slaughtering my Latin. I'm bravely moving into moth Genera and he puts up with my constant mistakes, but laughs at my jokes.
The focus for years has been Lepidoptera but iNaturalist has opened up my eyes to all the other stupendous nature in this High Sierra wonderland.

Posted on July 10, 2013 03:19 PM by robberfly robberfly

Observations

Photos / Sounds

What

Sierra Blue (Agriades podarce)

Observer

robberfly

Date

July 2013

Description

Host on Shooting Star...
YUBA PASS meadow.
Females slate gray (second shot)

Photos / Sounds

What

Nelson's Hairstreak (Callophrys gryneus ssp. nelsoni)

Observer

robberfly

Date

July 5, 2013 03:55 PM PDT

Description

Milkweed in perfect bloom...

Photos / Sounds

What

Willow Borer (Xylotrechus insignis)

Observer

robberfly

Date

July 5, 2013 03:55 PM PDT

Description

On the milkweed..

Photos / Sounds

What

Yellow-bellied Marmot (Marmota flaviventris)

Observer

robberfly

Date

July 5, 2013 03:53 PM PDT

Description

Almost looked like he was warming himself on the road...

Photos / Sounds

What

Ceanothus Silk Moth (Hyalophora euryalus)

Observer

robberfly

Date

July 5, 2013 05:50 PM PDT

Description

Larva. Entomologist had collected it at the Field Station.

Photos / Sounds

Observer

robberfly

Date

July 5, 2013 09:15 PM PDT

Description

Spectacularly creepy creature. Lifted its head off the sheet when I shot this. Read later they display their mandibles when threatened.

Photos / Sounds

Observer

robberfly

Date

July 5, 2013 09:59 PM PDT

Photos / Sounds

What

Spotted Tussock Moth (Lophocampa maculata)

Observer

robberfly

Date

July 5, 2013 10:29 PM PDT

Photos / Sounds

What

Vashti Sphinx (Sphinx vashti)

Observer

robberfly

Date

July 5, 2013 10:51 PM PDT

Photos / Sounds

What

Black-rimmed Prominent (Pheosia rimosa)

Observer

robberfly

Date

July 5, 2013 10:23 PM PDT

Description

Notodotini
Feeds on poplar and willow

Photos / Sounds

What

Nettle-leaf Giant Hyssop (Agastache urticifolia)

Observer

robberfly

Date

July 6, 2013 07:42 AM PDT

Description

Set out early in the morning before the Yuba Pass Butterfly Count to work on my wildflowers with a field guide.

Photos / Sounds

What

California Hairstreak (Satyrium californica)

Observer

robberfly

Date

July 6, 2013 09:31 AM PDT

Photos / Sounds

What

Hydaspe Fritillary (Argynnis hydaspe)

Observer

robberfly

Date

July 6, 2013 10:40 AM PDT

Description

Main Speyeria seen all day.

Photos / Sounds

What

Anna's Blue (Plebejus anna)

Observer

robberfly

Date

July 6, 2013 11:41 AM PDT

Description

The most abundant Lycaenid seen this day.
Males mud puddling here. Female slate gray.

Photos / Sounds

What

Lembert’s Hairstreak (Callophrys sheridanii ssp. lemberti)

Observer

robberfly

Date

July 2013

Description

One of the "oh-ah" species of this region. Can also be seen in the first few switchbacks up to the top of Lassen Peak.

Photos / Sounds

What

Johnson’s Hairstreak (Callophrys johnsoni)

Observer

robberfly

Date

July 2013

Description

Uses Dwarf Mistletoe on pines/conifers...

Photos / Sounds

What

Bee-mimic Robber Flies (Genus Laphria)

Observer

robberfly

Date

July 6, 2013 10:27 AM PDT

Description

Entomologist John Hafernik helped with I.D:
Laphira astur?

Photos / Sounds

What

Leopard Lily (Lilium pardalinum ssp. pardalinum)

Observer

robberfly

Date

July 6, 2013 10:26 AM PDT

Description

I'd seen them in southern Washington. Hadn't notice somehow they were on my state as well. Swallowtails adore them.

Photos / Sounds

What

Pacific Chorus Frog (Pseudacris regilla)

Observer

robberfly

Date

July 6, 2013 11:57 AM PDT

Description

Not sure where they become "Northerns"
Crazy beautiful green.

Photos / Sounds

What

Pale Swallowtail (Papilio eurymedon)

Observer

robberfly

Date

July 6, 2013 12:50 PM PDT

Description

I got incredibly close. The gorging insect oblivious to my presence.

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