by Krishna Mohan

Two-Tailed Spider - Hersilia savignyi
Returning after a busy day for a cup of coffee I noticed a spider on the granite pillar which leads to my house. When I built my house I got these local rough granite pillars from granite quarry in the nearby town of Karkala. 16 such tall stone pillars stand supporting roof of my pathway to my house. They are safe heavens for potter wasps who love to build nests. I had several social wasps building small hives before their larvae being eaten by neighboring potter wasps. Being rough it is a nice playing ground for Calotes lizards. That day I spotted a spider which was perfectly camouflaged to the granite background on that pillar. I could spot it only because it was holding a dark dead bee in its mouth and feeding on it. Later I could identify it as Two-Tailed Spider (Hersilia savignyi)

Two-Tailed Spider - Hersilia savignyi
I quickly grabbed my Canon EOS 5D mark II flitted with Canon EF 100mm f/2.8L Macro IS USM. For illumination I used Canon Speedlite 580EX II fitted with ExpoImaging Ray Flash Adapter. For closeup work I use this setup as the Ray Flash Adapter produces nice diffuse light which does not give out harsh highlights. Only drawback I see is that you can see the reflection ring light as white ring on the reflective parts of the subject. After using Rayflash adapter I have nearly stopped using Canon MT-24EX macro twin light flash which I have.I think I need to start using macro twin light flash again with some diffuser so that I can reduce the reflection of ringlight and make the picture look natural. As the spider was stationary feeding on the bee, I had plenty of opportunity to photograph the spider from all the angles.

Two-Tailed Spider - Hersilia savignyi
Being very well camouflaged for life, these spiders have an interesting way of capturing prey. The members of Hersiliidae family are flat, medium sized spiders that have a cryptic appearance and are usually found on tree trunks. These are very fast running, active hunting spiders. The most easily distinguishable feature of Hersiliidae is the extremely long posterior lateral spinnerets, which are often longer than the abdomen and sometimes approaching the total body length, hence the name two- tailed spiders. The body coloring is brown to match the color of the dry bark that the spider is normally resting on and camouflages well. The flattened body allows them to lie very close to the bark without casting any shadow or enables them to hide in the narrowest of cracks.

Two-Tailed Spider - Hersilia savignyi
They are occasionally encountered on walls and rocks. When disturbed, the spider runs very swiftly to the opposite side of the tree with the spinnerets raised like a pair of horns. The spider sits on the tree trunk and spreads the silk over the nearby area. When a small insect comes close, the insect disturbs the silk and the spider senses this. The spider will quickly run around the insect in circles, with the insect in the center. The spider will also lay more silk at the same time, until the insect is entangled in it. They are active hunters living on tree trunks, old walls or under stones and at most spinning a scanty web of irregular threads. A total of six species of three genera are reported from India so far. Next day I saw the same spider with another grasshopper as its victim. I had another photo session with it which you can see in the last two photos on this page.

Two-Tailed Spider - Hersilia savignyi
Hersilia savignyi Lucas 1836, is commonly called Two-tailed spider. Distributed throughout India, Myanmar, Philippines, Sri Lanka. Cephalothorax is flat and almost circular, slightly broader than long, with a prominently high clypeus. Anterior and posterior eyes are strongly recurved, anterior laterals positioned half way between the anterior and posterior medians. Legs, except the third pair, very long and slender and are armed with three claws. Tarsi of legs I, II and III two-segmented. Abdomen is flat, almost circular, slightly broader than long. Posterior lateral spinnerets are very long, much longer than the abdomen. The colour is greyish with a darkish lanceolate cardiac area and dark transverse margins posteriorly. Legs and spinnerets annulated with dark rings.

Two-Tailed Spider - Hersilia savignyi
It lives on tree trunks, often spotted on trunks of coconut palms in a head down position. It feeds on moths, ants and other smaller spiders. Cocoon is generally laid in the crevices of trees. It runs round the tree when disturbed. It is a very common spider in our tree barks and exhibits colour variation according to the substrate on which it is found.
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/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:19 12:11:28
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
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/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:19 12:11:34
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
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/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:19 12:12:02
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
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/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:19 12:13:19
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
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/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:20 13:53:51
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
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/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:20 13:55:36
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
Tags: Akruthi, Arachnida, Araneae, Araneomorphae, Arthropoda, Asia, Canon EF 100mm f/2.8L Macro IS USM, Canon EOS 5D mark II, Canon Speedlite 580EX II, Dakshina Kannada, ExpoImaging Ray Flash Adapter, Hersilia, Hersilia calcuttensis, Hersilia clathrata, Hersilia indica, Hersilia savignyi, Hersiliidae, India, Karnataka, Long-spinnered Bark Spider, Moodabidri, Tree trunk spider, two-tailed spider
Posted in Nature, Photography, Wildlife | Comments (6)
by Krishna Mohan

Tailed Palmfly
Around 1:30 AM after a really late night call at my hospital I was returning back home for a well deserved sleep, I saw this butterfly sitting on a dry vine near corridor of my house. I could make out that it was a butterfly from the way it was sitting with wings folded. Dim light of corridor did not help me to identify it. Once I saw the butterfly all my tiredness vanished and I wanted to photograph it. I slowly tiptoed into the house to grab and assemble all my macro rig without waking my family.

Tailed Palmfly Closeup
Once I got my Canon EOS 5D mark II with Canon EF 100mm f/2.8L Macro IS USM fitted with ExpoImaging Ray Flash Adapter on a Canon Speedlite 580EX II, I headed back to the butterfly. I use a led headlight to illuminate the butterfly so that I can focus in such a dark night. For macro photography I prefer manual focus over auto. Using the led headlight I can fine tune focus setting. For macro focusing I use a simple trick. I rotate the focus ring of the lens to a nearest focus position and then move my whole camera towards the subject till it is in perfect focus. If I overshoot, I back off till I get subject in full focus and then squeeze the shutter release. This allows my left hand to be free. I use my left hand to stabilize the branch where the subject is sitting so that I get a steady shot in case of a breeze. That night there was no breeze and the butterfly was sitting without moving hoping that it gets unnoticed in that darkness.

Tailed Palmfly
It was a Tailed Palmfly(Elymnias caudata). In the past this butterfly was considered as caudata subspecies of Common Palmfly (Elymnias hypermnestra caudata). Now Common Palmfly (Elymnias hypermnestra) and Tailed Palmfly(Elymnias caudata) are considered separate species. It is the most common and widely distributed Palmfly and the only one found in South India. Common in jungles and palm plantations. Avoids bright sunlight and rarely comes out into the open. Occurs in the plains and up to 1700 m in the hills. Active through out the year in South India. With weak flight,settles for a long time on leaves or trunks of palm trees at some height from the ground.

Tailed Palmfly
It lays its eggs on palm trees belonging to Arecaceae family like Coconut (Cocos nucifera), Areca Nut (Areca catechu), Rattan Palm (Calamus rotang), Loureiro’s Date Palm (Phoenix lourerii) Oilpalm (Elaeis guineensis), Yellow or Golden Cane Palm (Dypsis lutescens) and Chinese fan palm(Livistona chinensis).
This butterfly species is dimorphic, males and females do not look alike. Males exhibit black colored upperside forewings with small blue patches and reddish brown color on upperside hindwings, while the females mimic butterfly species of the genus Danaus. Sine I could not visualize the upperside of this specimen I am not sure whether it is male or female.
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8L Macro IS USM
Exposure Mode:
Manual exposure
Exposure Time:
1/180 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
200
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:28 01:22:35
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8L Macro IS USM
Exposure Mode:
Manual exposure
Exposure Time:
1/180 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:28 01:25:24
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8L Macro IS USM
Exposure Mode:
Manual exposure
Exposure Time:
1/180 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:28 01:25:39
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8L Macro IS USM
Exposure Mode:
Manual exposure
Exposure Time:
1/180 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
Daylight
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:28 01:25:39
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 43.9" E, 127 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
Tags: Akruthi, Arthropoda, Asia, Butterfly, Canon EF 100mm f/2.8L Macro IS USM, Canon EOS 5D mark II, Canon Speedlite 580EX II, Chikmagalur, Dakshina Kannada, Elymnias, Elymnias caudata, Elymnias hypermnestra caudata, ExpoImaging Ray Flash Adapter, India, Insecta, Karnataka, Lepidoptera, Moodabidri, Nymphalidae, Papilionidae, Satyrinae, South Indian Palmfly, Tailed Palmfly
Posted in Nature, Photography, Wildlife | Comments (1)
by Krishna Mohan

Juvenile Yellow-billed Babbler Cropped
That day I was returning after some macro shooting, I saw these group of babblers hopping around in the shrubs. I have covered these Yellow-billed Babblers (Turdoides affinis) earlier in three blogs here, here & here. Each time I had opportunity to use different lens and cameras.

Juvenile Yellow-billed Babbler
These are very familiar birds in Mangalore and Manipal area. But are absent in my native place which is very close to Mangalore. These birds jump and hop so much that it is rarely possible for me to get a clean closeup of them sitting. So when I saw this juvenile Yellow-billed Babbler which was sitting very close to me acting as a sentinel on duty, I started photographing without thinking about the rest of the group. When I reached home and checked photo on larger monitor I realized that it looked very close to the Jungle babbler(Turdoides striata). If it was not for the other adult Yellow-billed Babblers which have paler head and nape as compared to the body color, I would have mistook this for Jungle babbler(Turdoides striata). Thanks to my good friend Shiva Shankar whom I depend for most of my bird identification for clarifying the same.

Juvenile Yellow-billed Babbler
That day I was carrying my usual macro & tele rig consisting of Canon EOS 5D mark II fitted with Canon EF 300mm f/2.8L IS USM & Canon EF 2X II Extender. For the 600mm range I was getting, the bird was quite close. Due to that proximity you can see even at f/8 aperture I was getting the tail of the bird out of focus. Just to highlight the feather detail which is captured by the camera and the lens combination, I have cropped the first picture to almost 50% of the original.

Juvenile Yellow-billed Babbler
The Yellow-billed Babbler lives in flocks of seven to ten or more. It is a noisy bird, and the presence of a flock may generally be known at some distance by the continual chattering, squeaking and chirping produced by its members. One member often perches high and acts as a sentinel while the remaining members of the flock forage on or close to the ground. They feeds mainly on insects, but also eat fruit, nectar and human food scrap. They do not fly long distances, they usually gain height by moving up a tree or tall shrub.
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF300mm f/2.8L IS USM +2.0x
Exposure Mode:
Auto exposure
Exposure Time:
1/350 sec.
Exposure Bias:
+1.0
Aperture (F Stop):
f/8.0
ISO Used:
400
Flash Used:
Flash did not fire, compulsory flash mode.
White Balance:
As Shot
Focal Length:
600.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:18 16:00:19
GPS Location in Google Map:
12° 55' 20" N, 74° 51' 55.2" E, 697 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF300mm f/2.8L IS USM +2.0x
Exposure Mode:
Auto exposure
Exposure Time:
1/350 sec.
Exposure Bias:
+1.0
Aperture (F Stop):
f/8.0
ISO Used:
400
Flash Used:
Flash did not fire, compulsory flash mode.
White Balance:
As Shot
Focal Length:
600.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:18 16:00:19
GPS Location in Google Map:
12° 55' 20" N, 74° 51' 55.2" E, 697 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF300mm f/2.8L IS USM +2.0x
Exposure Mode:
Auto exposure
Exposure Time:
1/350 sec.
Exposure Bias:
+1.0
Aperture (F Stop):
f/8.0
ISO Used:
400
Flash Used:
Flash did not fire, compulsory flash mode.
White Balance:
As Shot
Focal Length:
600.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:18 16:00:20
GPS Location in Google Map:
12° 55' 20" N, 74° 51' 55.2" E, 697 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF300mm f/2.8L IS USM +2.0x
Exposure Mode:
Auto exposure
Exposure Time:
1/350 sec.
Exposure Bias:
+1.0
Aperture (F Stop):
f/8.0
ISO Used:
400
Flash Used:
Flash did not fire, compulsory flash mode.
White Balance:
As Shot
Focal Length:
600.0 mm
Metering Mode:
Pattern
Date Time:
2011:09:18 16:00:20
GPS Location in Google Map:
12° 55' 20" N, 74° 51' 55.2" E, 697 m.a.s.l.
Copyright ©
Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
Tags: Asia, Aves, birds, Bondel, branch, Canon EF 2X II Extender, Canon EF 300mm f/2.8L IS USM, Canon EOS 5D mark II, Chordata, Dakshina Kannada, India, Juvenile, Karnataka, Mangalore, Passeriformes, Timaliidae, Turdoides, Turdoides affinis, White sky, White-headed Babbler, Yellow-billed Babbler
Posted in Nature, Photography, Wildlife | Comments (1)