NHM.org


Nature Gardens at NHM: LA's Urban Nature

Showing posts with label : pupa

February 24, 2012

First Clouded Sulphur Butterfly Pupa in North Campus

Last week, Jany Alvarez, one of the Museum's Guest Relations staff, was sitting at the bus stop adjacent to the North Campus. While she was waiting for her bus, she saw an interesting sighta caterpillar crawling along the sidewalk! Thinking that the caterpillar would be better off on a plant than on the cement, she picked the caterpillar up and placed it carefully on a Dudleya plant on the Living Wall.

Later that day, another Guest Relations staffer watched the caterpillar pupate! By the time word travelled to me, the pupa looked like this:

Yellow pupa on Dudleya

When I came into work on Tuesday morning, the pupa had changed color! I took more pictures and went back to my office to identify it.

...


October 24, 2011

Today on the North Campus

I went out for a walk around the North Campus today and this is what I saw:

They are filling the pond to make sure there aren't any leaks and that the waterfall cascade is level.
 

I went out for a walk around the North Campus today and this is what I saw:

They are filling the pond to make sure there aren't any leaks and that the waterfall cascade is level.
 


Underneath the pedestrian footbridge is the best spot for mushrooms. I think this is a morel, Morchella esculenta. I am consulting with some mushroom experts to see if they can make a positive identification.

 

 

...

October 13, 2011

North Campus Monarchs

Yesterday afternoon myself and number of other staff members braved the heat to continue our survey of North Campus insects. On the heels of last week's Gulf Fritillary discovery, I found the site's first Monarch butterfly caterpillar, Danaus plexippus!
 
Monarch butterfly caterpillar
 
As soon as I saw the caterpillar I knew it was a Monarch: There isn't another caterpillar in our area with such yellow, black, and white banding. Also, the caterpillar was found on a narrow-leaved milkweed plant, Asclepias fascicularis, which is one of the food plants of this well-known species.
 
Based on its size, this caterpillar is in the second to last caterpillar stage (4th instar). Over the coming weeks it will molt to the last and...

October 5, 2011

First Caterpillar Record for North Campus!

The last few weeks I have been spoiled with bloggable stories, but this week I needed inspiration. I took a stroll out to the North Campus to see what I could find, and was excited to happen upon the first North Campus caterpillar.

The caterpillar I found was in the last and final "J stage" of its larval lifecycle, just about to pupate. 

Easily recognizable, Gulf Fritillary caterpillars are striped and spiny.

24 hours later the caterpillar had metamorphosed into the pupal stage, aka chrysalis.

If you look close, you can see the developing wings.

This pupa is a...