by Krishna Mohan
Nymph Roach
I found this nymph of cockroach in the plant actively hunting for smaller insects. It is not nymph of best-known pest species are the American cockroach, (Periplaneta americana)Most probably nyph of one of the wood cockroach species.
Cockroaches (or simply “roaches”) are insects of the order Blattaria. This name derives from the Latin name for the insect, Blatta. There are about 4,000 species of cockroach, of which 30 species are associated with human habitations and about four species are well known as pests.
Even though they are the commonest insects we see around us, very little information available regarding their identification especially during nymph stage.
Mantodea, Isoptera, and Blattaria are usually combined by entomologists into a higher group called Dictyoptera. Current evidence strongly suggests that termites have evolved directly from true cockroaches, and many authors now consider termites to be a family of cockroaches, as Blattaria excluding Isoptera is not a monophyletic group.
Cockroach nymph
Cockroach nymphs are generally similar to the adults, except for undeveloped wings and genitalia. Development is generally slow, and may take anything from a few months to over a year.
Blattaria is from Latin blatta, a cockroach. English cockroach itself is derived by folk etymology from Spanish cucaracha. That, itself, is a derivative of Spanish cuco, an insect; the Spanish word perhaps from Latin cucus, a Jackdaw (Partridge, 1958, Origins: A Short Etymological Dictionary of Modern English).
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8 Macro USM
Exposure Mode:
Manual exposure
Exposure Time:
1/200 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
As Shot
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2009:07:26 18:46:08
GPS Location in Google Map:
12° 55' 19.8" N, 74° 51' 57.4" E, 707 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/2.8 Macro USM
Exposure Mode:
Manual exposure
Exposure Time:
1/200 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
As Shot
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2009:07:26 18:43:05
GPS Location in Google Map:
12° 55' 19.8" N, 74° 51' 57.4" E, 707 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: Canon EF 100mm f/2.8 USM Macro, Canon EOS 5D mark II, Canon MT-24EX macro twin light flash
Posted in Nature, Photography, Wildlife | Comments (3)
by Krishna Mohan
Black and Yellow Mud Dauber
I just saw this Black and Yellow Mud Dauber building nest on one of the granite pillars at my courtyard.
As the reflection of twin lights on the round body of the insect was quite harsh, I wanted to try new diffuser on my Canon MT-24EX macro twin light flash. I usually have Gary Fong Diffusers puffers on my twin lights. They are invaluable when used with Canon MP-E 65 f/2.8 1-5X Macro lens. But on Canon EF 100mm f/2.8 USM Macro they produce harsh highlights on glossy bodies of insects. I wanted to try some cheapo Nylon diffusers I procured at local photo dealers which were copy cats of Lumiquest diffusers. The result is here. I need still more experiments to come out with a better solution.
Black and Yellow Mud Dauber Closeup
Apparently these diffusers are better, as you can see the harsh light is controlled considerably. But diffusers ate lot of power and flash was taking quite a bit (1-2secs) to recharge and be ready as compared to my puffer diffuser. As it made the twin light into a big soft box like light it might be producing a better fill.
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8 Macro USM
Exposure Mode:
Manual exposure
Exposure Time:
1/200 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
As Shot
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2009:07:25 10:51:04
GPS Location in Google Map:
13° 4' 1.8" N, 74° 59' 44.3" E, 1271 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/2.8 Macro USM
Exposure Mode:
Manual exposure
Exposure Time:
1/200 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/11.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
As Shot
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2009:07:25 11:01:15
GPS Location in Google Map:
13° 4' 1.8" N, 74° 59' 44.3" E, 1271 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: Black and Yellow Mud Dauber, Canon EF 100mm f/2.8 USM Macro, Canon EOS 5D mark II, Canon MT-24EX macro twin light flash, Insect, Moodabidri, Sceliphron caementarium
Posted in Nature, Photography, Wildlife | Comments (2)
by Krishna Mohan
Mating Weevils
I found these mating Weevils on a slender creeper. Not able to identify as there is scanty info about weevils. I took this photo without using flash. You can see the nice green background which is blurred (Bokeh). Since depth of field was shallow I had to go away from extreme closeup to keep the weevils in focus.
Curculionidae, also called snout beetles or curculios (not to be confused with the genus Curculio), is the family of the “true” weevils (or snout beetles). With over 60,000 species described worldwide, it is the largest of the beetle families.
They are recognized by their distinctive long snout and geniculate antennae with small clubs; beyond that, curculionids have considerable diversity of form and size, with adult lengths ranging from 1 mm to 40 mm.
Weevils are almost entirely plant feeders, and most species are associated with a narrow range of hosts, in many cases only living on a single species. With so many species to classify and over 400 genera, the taxonomy of this family is quite complicated, and authors disagree on the number and placement of various subfamilies, tribes, and subtribes.
The word “weevil” has been made famous by the boll weevil, which lays its eggs and eats inside cotton bolls, killing the plant.
Mating Weevils Closeup
For this shot I used my trusty Canon MT-24EX macro twin light flash with diffuser. You will notice that I kept a smaller aperture and higher speed. This resulted in the background under exposed and dark. Depth of field is larger due to the fact that the aperture is small. nd I could take a very closeup shot keeping the weevils in focus.
EXIF info…
Camera:
Canon EOS 5D Mark II
Lens:
EF100mm f/2.8 Macro USM
Exposure Mode:
Auto exposure
Exposure Time:
1/125 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/6.3
ISO Used:
400
Flash Used:
Flash did not fire, compulsory flash mode.
White Balance:
As Shot
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2009:07:19 14:59:45
GPS Location in Google Map:
12° 55' 19.8" N, 74° 51' 57.4" E, 707 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/2.8 Macro USM
Exposure Mode:
Manual exposure
Exposure Time:
1/160 sec.
Exposure Bias:
0.0
Aperture (F Stop):
f/9.0
ISO Used:
100
Flash Used:
Flash fired, compulsory flash mode.
White Balance:
As Shot
Focal Length:
100.0 mm
Metering Mode:
Pattern
Date Time:
2009:07:19 15:16:33
GPS Location in Google Map:
12° 55' 19.8" N, 74° 51' 57.4" E, 707 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: Beetle, Bondel, Canon EF 100mm f/2.8 USM Macro, Canon EOS 5D mark II, Canon MT-24EX macro twin light flash, Curculionidae, mating, snout beetle, weevil
Posted in Nature, Photography, Wildlife | Comments (3)
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