Posts Tagged ‘Akruthi’

Lacewing Eggs

March 11th, 2010
Lacewing Eggs on the under surface of Oleander Leaf

Lacewing Eggs on the under surface of Oleander Leaf

I found these strange eggs on the under surface of Oleander (Nerium oleander) leaf next to my house. Each egg was attached to the top of a hair-like filament. I had not seen such an egg laying on filamentous structure and on searching for info I found that it was from Lacewing (Chrysopidae). I used Canon EF 100mm f/2.8L Macro IS USM on Canon EOS 5D mark II illuminated using Rayflash on Canon Speedlite 580EX II flash.

In another few days the eggs will hatch and a tiny predatory larva emerges ready to eat the pests in my garden. Lacewing larvae are also known as aphid lions. Oval shaped eggs are laid singly at the end of long silken stalks and are pale green, turning pale gray in several days. The larvae, which are very active, are gray or brownish and alligator-like with well-developed legs and large pincers with which they suck the body fluids from prey. Larvae grow from <1 mm to 6-8 mm.

Lacewing larvae voraciously attack their prey by seizing them with large, sucking jaws and inject a paralyzing venom. The hollow jaws then draw out the body fluids of the pest. Of all available commercial predators, lacewings are the most voracious and has the greatest versatility for pests of field crops, orchards, and greenhouses. They are one of the best biological pesticides for your garden.

Reason for that filamentous structure may be to prevent emerging larva from cannibalizing each other. Each lacewing larva will devour 200 or more pests or pest eggs a week during their two to three week developmental period. After this stage, the larvae pupate by spinning a cocoon with silken thread. Approximately five days later adult lacewings emerge to mate and repeat the life cycle. Depending on climatic conditions, the adult will live about four to six weeks.

Lacewing Eggs

Lacewing Eggs

Each adult female may deposit more than 200 eggs. For best results, habitats should be provided that encourage the adults to remain and reproduce in the release area. Nectar, pollen, and honeydew stimulate their reproductive process. If these food sources are not available, adults may disperse.

Lacewing larvae feed on many different pest insects. In general, they attack the eggs and the immature stages of most soft-bodied pests such as: aphids, thrips, spider mites, sweet potato & greenhouse whitefly, mealybugs, leafhoppers, and the eggs and caterpillars of most moths.

Adult green lacewings are pale green, about 12-20 mm long, with long antennae and bright, golden eyes. They have large, transparent, pale green wings and a delicate body. Adults are active fliers, particularly during the evening and night and have a characteristic, fluttering flight.

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: As Shot
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:02:07 16:34:34
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: Daylight
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:02:07 16:37:03
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
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Posted in Nature, Photography, Wildlife | Comments (1)

Daphnis minima

March 8th, 2010
Daphnis minima

Daphnis minima

My daughter called me that day to photograph a moth which she thought was Oleander Hawk-moth(Daphnis nerii). When I went close to take photograph I realized that it was not Daphnis nerii. It was looking very similar to Daphnis nerii, but was brownish all over instead of the bright camouflage green Oleander Hawk-moth had. You can see Oleander Hawk-moth here as well as in my Macro Stitching a Moth post. You can also see its caterpillar at Metamorphosis.

I photographed this moth using my Canon EF 100mm f/2.8L Macro IS USM on Canon EOS 5D mark II with Rayflash fitted to Canon Speedlite 580EXII Flash. All photos were taken hand held at an awkward angle perching on a wooden stool as the moth was sitting close to fluorescent tube light outside my house. Ant which passed by during the shoot gave nice dimension of scale to the photograph.

Daphnis minima

Daphnis minima

Later going through identification I found that it did not even resemble another likely candidate Daphnis hypothous. Later at Indian Moths Yahoo Group I found out that it is Daphnis minima. This species is endemic to the Western Ghats and Sri Lanka. I thank Dr Ian J. Kitching and Roger C. Kendrick For helping me out in identification.

For more details on Daphnis minima check this link.

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: As Shot
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:02:06 19:15:41
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: As Shot
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:02:06 19:17:41
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
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Posted in Nature, Photography, Wildlife | Comments (4)

Why chimping is good for your photography but bad for your health

January 30th, 2010
Long Horned Beetle Nymph

Long Horned Beetle Nymph

Chimping refers to the act of shooting a photo, then immediately hitting the preview button on your camera to see the how it came out on the camera’s LCD screen. Much like a curious chimpanzee will hold and examine any new object. The term was coined by USA Today shooter Robert Deutsch in a story for the website SportsShooter.com. As defined by the Urban Dictionary: ‘What one does after taking a picture with a digital camera and looking at the result.’ Derived from the words they speak when chimping: “Ooo-oo-oo!”

Wikipedia adds, “the sounds and actions some make while reviewing images and those of an excited primate (Oooh! Oooh! Aaah!), or when a photographer is completely absorbed in the act of analyzing, admiring or proudly displaying a shot to others.” A wasteful ritual? Just a bad habit? Perhaps, but luckily shared it’s shared by many of our photo brethren be they professional or amateur.

You may be wondering why all this introduction about chimping and what that got to do with this photograph of young longhorned beetle. Please read further.

It was early morning of Wednesday. Coffee had not yet reached my bloodstream to wake me up, but I was greeted by the news that ootheca laid by some unknown praying mantis on the widow glass has hatched. I rushed with my trusty Canon 5D Mark II & Canon EF 100mm f/2.8L Macro IS USM along with Rayflash on my Canon Speedlite 580EX II to get the glimpse of these newly hatched mantids.

The ootheca was laid high up on the window glass pane and I was able reach there only with a help of large wooden stool. All around the ootheca the newly hatched mantids were gathering. Previous day it had rained and the ground was unstable. I tried taking photographs so as not to disturb mantids away from the ripped egg sac. The glass of the window pane was not helpful as it was reflecting my flash light emitted from Rayflash. I took few unsatisfactory shots and was thinking of setting up a nice lightbox around the ootheca so that I could capture mantids on all their glory.

Just Hatched Mantids

Just Hatched Mantids

Just then I noticed a very young long horned beetle on the window frame. I was able to get a beautiful closeup from the elevated vantage point I was in. Wooden background helped to highlight this little beetle. I was curious to see how well I did in focusing, and as a usual practice I started chimping at the preview. I was so engrossed in appreciating the shot at the back of my camera, that I did not realize that the stool underneath me sank in the soft mud and was tilting. Next thing I knew that I was out of balance and was rushing towards ground. I was able to save my camera and the rig from harms way but got few bruises along the hand and shin. My dream of capturing young praying mantids in light box went down with pain and agony.

So even though chimping is good to improve your photography skills it is bad for your health. Have a safe chimping. :-)

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 100
Flash Used: Flash fired, compulsory flash mode.
White Balance: As Shot
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:01:20 08:40:58
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 100
Flash Used: Flash fired, compulsory flash mode.
White Balance: As Shot
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:01:20 08:43:46
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
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Posted in Nature, Photography, Wildlife | Comments (2)

Besra

January 25th, 2010
Besra

Besra

On that busy Tuesday afternoon I took a break from my patients to have a quick sip of coffee. As I was entering home, I saw a Shikra(Accipiter badius) like bird on the huge Silk Cotton (Bombax ceiba) tree with some thing in its claw. I rushed and got my Canon EOS 7D & Canon EF 300mm f/4.0 L IS USM lens. The bird was too high up on the tree and I did not have a good view because of dense irregular branches. What I saw was not Shikra but a Besra, Accipiter virgatus. It is a bird of prey in the family Accipitridae with a meal of large lizard which I could not identify as its head was devoured by the bird. I was not happy with the results of 7D which was coming out all mushy and soft. The light was too contrasty and totally unfavorable.

Besra with 7D

Besra with 7D

So I went back and grabbed Canon EOS 5D mark II with Canon EF 1.4x II Extender added 300mm lens and tripod. The bird was curious about me and it stopped eating and started watching. I also became spectacle for all my patients who were least interested in my hobby. Despite all that commotion the bird was quiet and composed.

I also saw a resident Red Whiskered Bulbul family which laid eggs in my backyard started coming near the half eaten lizard so that it can get a piece for its chicks. This was unusual as Bulbuls are one of the delicacies on their menu of a Besra. After a few minutes Besra took off with Large lizard carcass to go some peaceful place. I was lucky to get few good shots.

Besra with 5D Mark II

Besra with 5D Mark II

The Besra is a widespread resident breeder in dense forests throughout south Asia from Pakistan and India to south China and Indonesia. It nests in trees, building a new nest each year. It lays 2 to 5 eggs.

This bird is a medium-sized raptor (29 to 36 cm) with short broad wings and a long tail, both adaptations to fast manoeuvring. The normal flight of this species is a characteristic “flap–flap–glide”, and the barred underwings are a distinction from the Shikra, A. badius.

This species is like a darker version of the widespread Shikra, but all plumages have a dark vertical throat stripe. The adult male Besra has dark blue-grey upperparts, and is white, barred reddish below. The larger female is browner above than the male. The juvenile is dark brown above and white, barred with brown below. It has a barred tail.

In winter, the Besra will emerge into more open woodland including savannah and cultivation. Its hunting technique is similar to other small hawks such as the Sparrowhawk and the Sharp-shinned Hawk, relying on surprise as it flies from a hidden perch or flicks over a bush to catch its prey unaware.

The prey is lizards, dragonflies, and small birds and mammals.

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF300mm f/4L IS USM +1.4x
Exposure Mode: Auto exposure
Exposure Time: 1/250 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/5.6
ISO Used: 800
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: As Shot
Focal Length: 420.0 mm
Metering Mode: Pattern
Date Time: 2010:01:19 13:09:22
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
EXIF info…
Camera: Canon EOS 7D
Lens: Canon EF300mm f/4L IS USM
Exposure Mode: Auto exposure
Exposure Time: 1/180 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/4.0
ISO Used: 400
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: As Shot
Focal Length: 300.0 mm
Metering Mode: Pattern
Date Time: 2010:01:19 12:01:00
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF300mm f/4L IS USM +1.4x
Exposure Mode: Auto exposure
Exposure Time: 1/13 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/10.0
ISO Used: 100
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: As Shot
Focal Length: 420.0 mm
Metering Mode: Pattern
Date Time: 2010:01:19 13:19:40
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
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Posted in Nature, Photography, Wildlife | Comments (3)

Solar Eclipse

January 15th, 2010
Solar Eclipse

Solar Eclipse

At my place solar eclipse of January 15, 2010 was visible only as partial solar eclipse. I used Canon EOS 5D mark II along with Canon EF 300mm f/4.0 L IS USM lens with stacked 2 1.4x tele-converters. I added 2 neutral density filters (2 Stop + 4 Stop) along with a circular polarizer filter. Even with that the intensity of sun was too much. I shot all shots at ISO 100, 1/8000 sec at F/45. I covered the front of lens using a welding glass plate during focusing and aligning with sun thus avoiding direct eye contact. Focus was manual focus using the marking on the lens. Image Stabilization was off as camera was on a tripod. I initially tried to shoot using welding glass only as the protector, but result was disappointing as the glass plate was giving lot of internal reflections. Throughout the eclipse I was wearing protective Mylar film coated glasses to protect my eyes. I did not use live view or auto focus so as to save my sensor getting burnt down by solar rays.

Solar Eclipse Composite View

Solar Eclipse Composite View

The solar eclipse of January 15, 2010 was an annular eclipse of the Sun with a magnitude of 0.9190. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partially obscuring Earth’s view of the Sun. An annular solar eclipse occurs when the Moon’s apparent diameter is smaller than the Sun, causing the sun to look like an annulus (ring), blocking most of the Sun’s light. An annular eclipse will appear as partial eclipse over a region thousands of kilometres wide.

This was the longest annular solar eclipse of the millennium,[1] and the longest until December 23, 2043, with a maximum length of 11 mins and 7.8 seconds. (The solar eclipse of January 4, 1992 was longer, at 11 minutes, 41 seconds, occurring in the middle of the Pacific Ocean.)

It was visible as a partial eclipse in much of Africa, Eastern Europe, the Middle East and Asia. It was seen as annular within a narrow stretch of 300 km (190 mi) width across Central Africa, Maldives, South Kerala (India), South Tamil Nadu (India), North Sri Lanka, parts of Burma and parts of China.

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF300mm f/4L IS USM +1.4x
Exposure Mode: Manual exposure
Exposure Time: 1/8000 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/45.0
ISO Used: 100
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: As Shot
Focal Length: 420.0 mm
Metering Mode: Pattern
Date Time: 2010:01:15 13:23:55
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: Canon EF300mm f/4L IS USM +1.4x
Exposure Mode: Manual exposure
Exposure Time: 1/8000 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/45.0
ISO Used: 100
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: As Shot
Focal Length: 420.0 mm
Metering Mode: Pattern
Date Time: 2010:01:15 13:43:18
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved
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Tags: , , , , , , , , , , ,
Posted in Nature, Photography | Comments (2)

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