Uploaded December 2013 | Updated September 2026, 3 weeks ago
Finally completed after 6 years, this collection of live action video, still images and timelapse sequences chronicle the life phases of the Gabb's Checkerspot Butterfly (Chlosyne gabbii) in amazing visual detail... Footage shot in the field and lab/studio had been accumulating for some time, and even though there was enough material to complete the project, it remained shelved until just recently when I finally found the time to finish it.
The life cycle begins with a mating pair filmed on a warm Spring day in May. A few days later, several females were collected and returned to the lab where a special enclosure was fabricated to provide a suitable environment to encourage the females to lay their eggs on fresh host plant cuttings, which you can see on the JCMDI documentary webpage here: lepidoptera.jcmdi.com/b/nym/gabbii/gabbiir.html.
The females spend the morning eating and basking in the warm sunshine until after noon, when they select a suitable place on a host plant, and settle in to begin laying their eggs. Unlike many species which lay their eggs one or a few at a time, this species lays a mass of eggs in one place over the course of several hours. Depending upon the size and health of the female, she may lay several masses like the ones shown.
After 10-12 days, the tiny larvae develop and can be seen through the transparent eggshells as creamy-green with black heads. They chew their way out of the shells and begin feeding. At night or when at rest, they move to old or dead curled-up leaves lower in the plant where they are less likely to be spotted and eaten by predators. The larvae only eat for a couple of weeks, until mid-2nd instar, when they find a suitable location deep in the plant foliage to go into diapause (hibernation) for the rest of the summer, fall and winter.
The following Spring when temperatures warm up, they come back to life and begin eating again, growing to maturity rapidly and pupating soon afterwards. Timelapse sequences show the caterpillar pupation process, which normally takes a few hours, in only few seconds. After they harden a bit, the pupae change into a camouflaged color pattern which blends in amazingly well with the host plant foliage. In a few weeks, the pupae develop, with the adult butterfly's wing colors clearly visible through the semi-transparent pupal case, and emerge shortly afterward.
The butterfly emerges and inflates its wings in 10-20 few minutes, then waits patiently for a couple of hours while its wings dry and harden enough to be used in flight. Females are ready to mate as soon as they emerge, and the males, which frequently begin emerging a day or two before the females, are already on patrol and looking for them, to start the life cycle process all over again...
See the entire online documentary for this species on the JCMDI website here: lepidoptera.jcmdi.com/b/nym/gabbii/gabbiip.html
The soundtrack is "The End of Summer (CD Ver*)" from the "TimeShift" CD by Technician (yours truly), album and single track available on iTunes: itunes.apple.com/us/album/timeshift/id416810514 full artist discography and CDs available at HTTP://technician.jcmdi.com
Note: This is copyrighted material, however, you may download this footage directly from YouTube and use it free of charge in your own non-profit/non-commercial YouTube videos, school projects, etc. The full free usage policy and YouTube copyright notice/ad info can be found here (please read before using JCMDI material): jcmdi.com/stockfootage/faq.html#freeusage jcmdi.com/stockfootage/faq.html#partner
Enjoy the show! =)
Finally completed after 6 years, this collection of live action video, still images and timelapse sequences chronicle the life phases of the Gabb's Checkerspot Butterfly (Chlosyne gabbii) in amazing visual detail... Footage shot in the field and lab/studio had been accumulating for some time, and even though there was enough material to complete the project, it remained shelved until just recently when I finally found the time to finish it.
The life cycle begins with a mating pair filmed on a warm Spring day in May. A few days later, several females were collected and returned to the lab where a special enclosure was fabricated to provide a suitable environment to encourage the females to lay their eggs on fresh host plant cuttings, which you can see on the JCMDI documentary webpage here: lepidoptera.jcmdi.com/b/nym/gabbii/gabbiir.html.
The females spend the morning eating and basking in the warm sunshine until after noon, when they select a suitable place on a host plant, and settle in to begin laying their eggs. Unlike many species which lay their eggs one or a few at a time, this species lays a mass of eggs in one place over the course of several hours. Depending upon the size and health of the female, she may lay several masses like the ones shown.
After 10-12 days, the tiny larvae develop and can be seen through the transparent eggshells as creamy-green with black heads. They chew their way out of the shells and begin feeding. At night or when at rest, they move to old or dead curled-up leaves lower in the plant where they are less likely to be spotted and eaten by predators. The larvae only eat for a couple of weeks, until mid-2nd instar, when they find a suitable location deep in the plant foliage to go into diapause (hibernation) for the rest of the summer, fall and winter.
The following Spring when temperatures warm up, they come back to life and begin eating again, growing to maturity rapidly and pupating soon afterwards. Timelapse sequences show the caterpillar pupation process, which normally takes a few hours, in only few seconds. After they harden a bit, the pupae change into a camouflaged color pattern which blends in amazingly well with the host plant foliage. In a few weeks, the pupae develop, with the adult butterfly's wing colors clearly visible through the semi-transparent pupal case, and emerge shortly afterward.
The butterfly emerges and inflates its wings in 10-20 few minutes, then waits patiently for a couple of hours while its wings dry and harden enough to be used in flight. Females are ready to mate as soon as they emerge, and the males, which frequently begin emerging a day or two before the females, are already on patrol and looking for them, to start the life cycle process all over again...
See the entire online documentary for this species on the JCMDI website here: lepidoptera.jcmdi.com/b/nym/gabbii/gabbiip.html
The soundtrack is "The End of Summer (CD Ver*)" from the "TimeShift" CD by Technician (yours truly), album and single track available on iTunes: itunes.apple.com/us/album/timeshift/id416810514 full artist discography and CDs available at HTTP://technician.jcmdi.com
Note: This is copyrighted material, however, you may download this footage directly from YouTube and use it free of charge in your own non-profit/non-commercial YouTube videos, school projects, etc. The full free usage policy and YouTube copyright notice/ad info can be found here (please read before using JCMDI material): jcmdi.com/stockfootage/faq.html#freeusage jcmdi.com/stockfootage/faq.html#partner
Enjoy the show! =)









![Apollo Lunar Lander Engine Test Stand at LA-98 Magic Mountain V05228
New info on this footage (and more coming) - it turns out that these concrete pads are actually rocket engine test stands built at the LA-98 Nike (radar) site at Magic Mountain. The stands were used around 1964 to test Reaction and Control Rocket Motor designs, destined for use in the Apollo Moon Missions! Even though the Nike site is listed as in use until the late 60s, the missile support equipment and personnel had been removed much earlier, and the LA-98 Magic Mountain summit area re-tasked for private aerospace contractor use.
Thanks to YoutTuber viewer Bodegasam for providing some great background on this site! More information on the Nike Missile Program can be found here:
http://www.nikeordnance.com/
Original video text [some corrections in brackets]:
This quick docmentary shows the remains of the LA-98 (Magic Mountain/Lang Station Nike Missile Site in the San Gabriel Mountians of southern California. It is one of 16 such sites which surrounded the Los Angeles area in the 1950s and 1960s and provided part of a layered nuclear [and non-nuclear] missile defense system during the cold war - primarily intended to shoot down bomber aircraft before they could deliver their nuclear payload on the city.
Built by the US Army in the 1950s, the sites have long since been decomissioned and many have been converted to civilian use, such as fire stations, and microwave relay / telecommunications facilities.
This particular facility [LA-98] was originally made to launch non-nuclear AJAX defense missiles, and was [not] later upgraded to support newer, more powerful 20-40 kiloton nuclear-tipped Hercules missiles [however, the nearby LA-94 site at Los Pinitos/Bear Divide was]. NIKE sites also maintained radar facilities and missile battery crews, ready to defend the city at a moments notice.
Fortunately, the bombers never came and none of the mssiles were ever fired. The radioactive fallout from such a detonation over the city would likely have been harmful or fatal to many, although probably not nearly as destructive as the much larger weapon dropped and successfully detonated from a bomber aircraft.
Like many cold war weapons, these defenses served as a deterrent more than anything. They were well known to potential enemies of the time, but probably not so well known by the poeple in the nearby cities they were made to protect.
Much more information on these sites is available online - you can easily locate it with a Google search for LA-98 nike missile site.
Heres a great article by the local paper online: http://www.the-signal.com/news/archive/10205/
The mountain peak on which this site resides is visible from all over Santa Clarita. As the story goes, the few locals in the valley at the time named it Magic Mountain because of the strange lights and activity that went on during the sites construction and term of service. It is not related to the amusement park Six Flags Magic Mountain, which is 10+ miles to the west.
P.S. The dog is shown for scale! [grinn] =)
The music is Monster Music from the Halloween 2000 CD by Technician (yours truly). Full artist discography, MP3 downloads and CDs are available at the Technician website: HTTP://technician.jcmdi.com
Note: This is copyrighted material, however, you may download this footage directly from YouTube and use it free of charge in your own non-profit/non-commercial YouTube videos. The full free usage policy, and copyright notice/claim and partner ad info can be found here:
http://jcmdi.com/stockfootage/faq.html#freeusage and
http://jcmdi.com/stockfootage/faq.html#partner
(please read both sections before using JCMDI material - Thanks!) Apollo Lunar Lander Engine Test Stand at LA-98 Magic Mountain V05228](https://i.ytimg.com/vi/WiSu44IzQDw/mqdefault.jpg)
