Posts Tagged ‘Eudicots’

Miresa Moth

July 15th, 2010
Miresa Moth

Miresa Moth

It was raining heavily on that day, I saw a brown hairy moth sitting the shade of Cashew (Anacardium occidentale) leaf. It had dull yellowish body, pale yellow hindwings and rufous brown forewings with yellowish white patches. I used Canon EOS 5D mark II with Canon EF 100mm f/2.8L Macro IS USM lens using Rayflash on my Canon Speedlite 580EX II

Thanks to Roger C. Kendrick of Hong Kong Moths I could Identify it as Miresa Species of moth belonging to Limacodidae family of moths in the superfamily Zygaenoidea. They are often called slug moths because their caterpillars bear a distant resemblance to slugs. They are also called cup moths because of the shape of their cocoons. They are mostly tropical, but occur worldwide, with about 1000 described species and probably many more as yet undescribed species.

They are small, hairy moths, with reduced or absent mouthparts and fringed wings. They often perch with their abdomens sticking out at 90 degrees from the thorax and wings. Caterpillars of these moths are typically very flattened, and instead of prolegs they have suckers. The thoracic legs are reduced, but always present and they locomote by rolling waves rather than walking with individual prolegs. They even use a lubricant, a kind of liquified silk to move on.

Miresa Moth

Miresa Moth

The Limacodidae are perhaps best known for their slug-like larvae, sometimes smooth, but usually invested with urticating spines that can cause profound irritation to the skin, leading to their common name of ‘nettle-grubs’. The larvae of most species appear to be polyphagous, feeding on a wide range of plant families. No obvious examples of specificity have been located.

The Limacodidae family larvae attack a wide variety of crops, mainly trees and shrubs such as coconut palm (Elaeis, Cocos), banana (Musa, Musaceae), coffee (Coffea, Rubiaceae), tea (Camellia, Theaceae), cocoa (Theobroma, Sterculiaceae), Citrus various (Rutaceae), mango (Mangifera, Anacardiaceae), and rambutan (Nephelium, Sapindaceae).

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/14.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: n.a.
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:06:06 14:56:01
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: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/14.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: n.a.
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:06:06 14:57:20
GPS Location in Google Map:
13° 4' 1.799760012" N – 74° 59' 44.3148003132" E
Copyright © Krishna Mohan
All rights Reserved

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , ,
Posted in Nature, Photography, Wildlife | Comments (1)

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: 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: 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

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
Posted in Nature, Photography, Wildlife | Comments (6)

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: 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: 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: 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

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
Posted in Nature, Photography, Wildlife | Comments (5)

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