Monarchs and Milkweed of Los Angeles

To participate in this project, simply take photos of any Monarch butterflies (Danaus plexippus) or milkweed plants (Genus Asclepias) that you see in Greater Los Angeles, and post to this project.

Observations may also be submitted by emailing nature@nhm.org.

Monarch observations may include monarchs in any one of their four life cycle stages: egg, larva (caterpillar), pupa (chrysalis), adult (butterfly). http://www.monarchwatch.org/biology/cycle1.htm

Greater Los Angeles is defined as: Los Angeles County, Orange County, Riverside County, San Bernardino County, and Ventura County.

Posted on March 04, 2014 04:30 PM by rsmart rsmart | 6 comments | Leave a comment

Recent observations View all

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

November 10, 2014 05:23 PM PST

Description

Caterpillars grown large, eating most of the leaves from the milkweed. A few days later, there were few caterpillars, didn't find prepupa or chrysalis. Peafowl, jays, or mouse eating them?

Photos / Sounds

What

Monarch Danaus plexippus

Observer

nhm_nature

Date

November 25, 2014

Description

"There are two chrysalises on the wall of the staircase as you’re coming up from the NHM Car Park. I took pictures of the two chrysalises this morning. One of the butterflies was ready to come out, and the other should be coming out pretty soon." - Michael Correa

Observation and photos by Michael Correa.

Photos / Sounds

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What

bloodflower milkweed Asclepias curassavica

Observer

menkster

Date

November 22, 2014

Place

(Somewhere...)

Photos / Sounds

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What

Monarch Danaus plexippus

Observer

menkster

Date

November 14, 2014

Place

(Somewhere...)

Description

Newly hatched larvae

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Butterfly Danaus plexippus

Observer

nhmordenana

Date

July 10, 2014 01:50 PM PDT

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

quantron

Date

November 15, 2014

Description

Female Monarch butterfly oviposited on milkweed.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Narrowleaf milkweed Asclepias fascicularis

Observer

rdm24

Date

September 23, 2007 12:40 PM PDT

rsmart Project curator ID

Asclepias fascicularis

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

mdillon

Date

August 11, 2014 08:32 AM PDT

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Butterfly (Danaus plexippus) Danaus plexippus

Observer

nshirkey

Date

October 16, 2014 01:26 PM PDT

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Butterfly Danaus plexippus

Observer

ki6h

Date

November 8, 2014 12:16 PM PST

Description

3 large caterpillars and 3 small caterpillars on milkweed plants.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Danaus plexippus

Observer

nhm_nature

Date

November 5, 2014

Place

Venice, CA (Google, OSM)

Description

Photos and observation by Deidre Samuels, sent to nature@nhm.org.

Photos / Sounds

What

Monarch Danaus plexippus

Observer

fignewtonjack

Date

November 1, 2014

Description

Saw Monarch depositing eggs on Milkweed and caterpillars. Picture of Monarch is while it was resting on a Palm Tree.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 17, 2014 01:41 PM PDT

Description

Ovipositing on bloodflower milkweed.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

Square

What

bloodflower milkweed Asclepias curassavica

Observer

cspnl

Date

September 7, 2014 01:32 PM PDT

Description

With a wasp visiting, possibly hunting for caterpillars of monarch butterflies.

rsmart Project curator ID

Asclepias curassavica

Photos / Sounds

What

Monarch Butterfly Danaus plexippus

Observer

quantron

Date

October 26, 2014

Place

Gardena (Google, OSM)

Description

Traditional Halloween female Monarch butterfly oviposited on milkweed. The butterflies will hatch around New Year's day.
11/15/14 Six Monarch caterpillars have survived.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Butterfly Danaus plexippus

Observer

rsmart

Date

October 15, 2014 12:22 PM PDT

Description

We learned how to tag monarch butterflies.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 3, 2014 09:28 AM PDT

Description

Found caterpillars on my bloodflower milkweed. Since they haven't been able to grow recently (wasp predation?), I brought these in and put them in a butterfly cage. Each day I dumped their water and gave them new cuttings from my plants. Photo with ruler with MM for size reference. These 2 started leaving their plants on Oct. 6, when about the size of a pinkie finger.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 5, 2014 12:59 PM PDT

Description

Still eating and growing indoors

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 6, 2014 11:42 AM PDT

Description

2 little ones found

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 7, 2014 02:07 PM PDT

Description

One liked a branch and one likes the cheesecloth roof. I'll call them pupae at this stage.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 7, 2014 09:56 AM PDT

Description

Male monarch (dots on the vein on the hind wing), resting or sleeping in tree.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

Square

What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 4, 2014 06:28 AM PDT

Description

One of the 2 caterpillars, with inches at right of ruler, MM next to the caterpillar. These were found wild, but brought in to help with survival.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 6, 2014 10:02 AM PDT

Description

The caterpillars are pretty big and starting to leave their food plants. Moved to a bigger container and included milkweed in case they are just going to another instar, and added lantana and basil sticks so they can pupate on them, because I have seen many that leave their host plant to do so. I needed the smaller cage for a couple of little ones I just found outside.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 7, 2014 07:27 AM PDT

Description

The 2 are done eating. Both were hanging from their rear ends in J shape like I have seen them do, sometimes for a few days before they become green and hang out till they emerge as a butterfly.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

Square

What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 7, 2014 04:29 PM PDT

Description

The first to change, chose the stick. The second one chose the cheescloth and still is not quite fully formed, is lumpy-the top is bulkier than it will be later, and missing the gold dots.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

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What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

October 3, 2014 09:30 AM PDT

Description

Mama monarch stayed around a lot this day, laying eggs on flowers of bloodflower milkweed, obtained about a year ago as seedlings and cuttings from approximately 2 miles to the east of this location. The seedlings were in pathways and would have been killed if I didn't take them. That property has approximately 50 ft row of plants and has had probably a couple of hundred caterpillars this year.

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

September 18, 2014 08:16 AM PDT

Description

Egg on a potted plant, and 2 small caterpillars on potted seedling

rsmart Project curator ID

Danaus plexippus

Photos / Sounds

Square

What

Monarch Butterfly Danaus plexippus

Observer

cspnl

Date

September 17, 2014 11:38 AM PDT

Description

Monarch laying eggs, on potted bloodflower milkweed in front planter. Large caterpillar later discovered on that potted plant, Oct. 7.

Photos / Sounds

What

Bloodflower Milkweed Asclepias curassavica

Observer

cspnl

Date

September 2, 2014 11:57 AM PDT

Description

Cuttings and seedlings have matured, bloomed, and seeds are flying. If the seed pods are nearly mature and cut, and put in a pot, they sprout.

rsmart Project curator ID

Asclepias curassavica

Photos / Sounds

What

Monarch (Danaus plexippus) Danaus plexippus

Observer

biochristine

Date

July 2, 2013 01:03 PM PDT

Description

Lots of Monarchs out today.

rsmart Project curator ID

Danaus plexippus
More observations

About

The Natural History Museum of Los Angeles County (NHM) has begun studying our local urban environment to better understand the biodiversity that lives in the Greater Los Angeles Area. Part of this study includes knowing where local populations of monarch butterflies and milkweed plants are found.

Why are we including milkweed plants in our monarch study? Milkweed is a host plant for ...more ↓

10814-mini rsmart created this project on March 04, 2014
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