another look at BMSB highly sculptured cuticle

Images taken in a controlled environment or with a posed subject. All subject types.

Moderators: rjlittlefield, ChrisR, Chris S., Pau

rjlittlefield
Site Admin
Posts: 23561
Joined: Tue Aug 01, 2006 8:34 am
Location: Richland, Washington State, USA
Contact:

Post by rjlittlefield »

Adalbert wrote:I have just checked the next two pictures but haven't found any balloons :-(
https://live.staticflickr.com/4230/3541 ... aacd_o.jpg
https://live.staticflickr.com/4254/3541 ... af21_o.jpg
but sometimes small, white points in the pits.
I agree, those look like empty pits. This is very interesting! The shape of the head and layout of the pits are consistent with my BMSB. I wonder why some bugs have them and some don't?
Unfortunately I do not see anything in the 44 SEM pictures of that publication that matches well with the sculptured cuticle that I have photographed here.
maybe at the top of the picture 19?
Maybe. For that picture the textual description of "Scabriculous to Areolate" takes me to page 19 of the PDF (page 17 of the original paper), where it says
scabriculous, (figs. 13,19), finely scabrous; with fine and regular short, sharp, wrinkles and/or projections (M)(T-B). cf., muriculate, shagreened.
scabrous, (fig 14), rough; irregularly and roughly rugose; possessing short, sharp projections or wrinkles (B)(T-B). dim. scabriculous. cf., rugose, salebrose, squarrose.
...then...
* shagreened, covered with a closely set roughness, like the rough-surfaced horse leather termed shagreened; like shark leather (T-B). cf., scabriculous
...and on the previous page...
muriculate, with a covering of fine, short, sharp, thick excrescences; irregularly scabriculous (M).
The problem I have is that in picture 19 (and in all the others) I do not see any of the "overhanging edges" structure that shows clearly in mine and I think is visible in Eisner's Chelinidia. Likewise, I don't see anything in the words that suggests overhanging lips or edges.

It would be interesting to know what terminology is used by experts in this area. But I have not found technical papers other than Eisner's. Eisner's phrasing of "minutely sculpted so as to serve as a physical sponge" in "For Love of Insects" seems very descriptive but written for a general audience. On the other hand, he also uses the term "physical sponge" in a related paper titled "Chemical attraction of kleptoparasitic flies to heteropteran insects caught by orb-weaving spiders"" (currently available at https://www.pnas.org/content/pnas/88/18/8194.full.pdf). But Google search on "physical sponge" "stink bug" finds little more than Eisner's writings, my threads here at PMN quoting him, and a bunch of hits containing perhaps the most random phrases I have ever seen. So for me the terminology remains a continuing mystery (among many others).

--Rik

Online
Adalbert
Posts: 2425
Joined: Mon Nov 30, 2015 1:09 pm

Post by Adalbert »

Hello Rik,
Have you already taken a look at that https://www.sciencedirect.com/topics/im ... eteroptera ?
BR, ADi

rjlittlefield
Site Admin
Posts: 23561
Joined: Tue Aug 01, 2006 8:34 am
Location: Richland, Washington State, USA
Contact:

Post by rjlittlefield »

Adalbert wrote:Have you already taken a look at that https://www.sciencedirect.com/topics/im ... eteroptera ?
I had not looked at that. Just now looked & searched, but did not recognize anything relevant in searches for "halyomorpha" and "halyomorpha sponge". Most of the articles are behind a paywall. Is there some specific article that you think might be relevant?

--Rik

Online
Adalbert
Posts: 2425
Joined: Mon Nov 30, 2015 1:09 pm

Post by Adalbert »

Hello Rik,
Sorry, I don’t know, because of the paywall :-(

Maybe the white balloons (and the sponge) have something to do with the ecdysis of the just hatched adult bug.
Please take a look at the last picture in: https://www.halyomorphahalys.com/biolog ... cycle.html

BR, ADi

Macrero
Posts: 1166
Joined: Thu Sep 01, 2011 8:17 am
Location: Valladolid , Spain

Re: another look at BMSB highly sculptured cuticle

Post by Macrero »

Interesting and well done. And great surgeon skills =D> Much better than mine... :oops:

I'm waiting to receive one of those, it comes from the US, so it will take a while.

May I ask how's the image circle/coverage? I guess it will be quite worse than the Oly 50/0.80. The Oly can be pushed down to 28X with aceptable coverage on APS-C. But well... I'll have some fun modding and testing the Nikon.

Best,

- Macrero
https://500px.com/macrero - Amateurs worry about equipment, Pros worry about money, Masters worry about Light

rjlittlefield
Site Admin
Posts: 23561
Joined: Tue Aug 01, 2006 8:34 am
Location: Richland, Washington State, USA
Contact:

Re: another look at BMSB highly sculptured cuticle

Post by rjlittlefield »

Macrero wrote:
Wed Aug 25, 2021 2:37 pm
Interesting and well done. And great surgeon skills =D> Much better than mine... :oops:
Thanks! I find it very frustrating to work with such small field of view, but worth the frustration if I can get a really informative image.
I'm waiting to receive one of those, it comes from the US, so it will take a while.

May I ask how's the image circle/coverage? I guess it will be quite worse than the Oly 50/0.80. The Oly can be pushed down to 28X with aceptable coverage on APS-C. But well... I'll have some fun modding and testing the Nikon.
I assume that you're talking about the Nikon 40X NA 0.80 M Plan apochromat that I used in the first post. I have not explicitly tested the coverage, and I have shot only on APS-C. But in the whole-frame full resolution stereo pair HERE, it seems to me that in the extreme corners the IQ drops suddenly and CA appears. That would be something like 25 mm diagonal, about the same size as the eyepieces that I guess the objective was designed for. The objective is an older finite design. To maintain good image quality it must be used within a few mm of exact tube length, so reducing the magnification is not practical with any optics that I have.

--Rik

Macrero
Posts: 1166
Joined: Thu Sep 01, 2011 8:17 am
Location: Valladolid , Spain

Re: another look at BMSB highly sculptured cuticle

Post by Macrero »

rjlittlefield wrote:
Wed Aug 25, 2021 5:43 pm

Thanks! I find it very frustrating to work with such small field of view, but worth the frustration if I can get a really informative image.
--Rik
It's quite frustrating and challenging to me too, given the tiny FOV and short WD. But yeah, it's worthwhile when you get a good, informative image as in this case.

rjlittlefield wrote:
Wed Aug 25, 2021 5:43 pm
I assume that you're talking about the Nikon 40X NA 0.80 M Plan apochromat that I used in the first post. I have not explicitly tested the coverage, and I have shot only on APS-C. But in the whole-frame full resolution stereo pair HERE, it seems to me that in the extreme corners the IQ drops suddenly and CA appears. That would be something like 25 mm diagonal, about the same size as the eyepieces that I guess the objective was designed for. The objective is an older finite design. To maintain good image quality it must be used within a few mm of exact tube length, so reducing the magnification is not practical with any optics that I have.
--Rik
Yes, I was referring to the Nikon 40/0.80 Apo.

Thank you the info, that's just what I'd expect from an old, finite, high-res APO objective. It will not replace my Oly Fl 50/0.80, which has a surprisingly big image circle and is much more versatile, but I didn't expect it would do either.

Will share some stack with the Nikon when I get it if I can get something worth sharing...

- Macrero
https://500px.com/macrero - Amateurs worry about equipment, Pros worry about money, Masters worry about Light

Post Reply Previous topicNext topic