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another look at BMSB highly sculptured cuticle
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 20289
Location: Richland, Washington State, USA

PostPosted: Tue Jan 14, 2020 8:04 am    Post subject: Reply with quote

Adalbert wrote:
I have just checked the next two pictures but haven't found any balloons Sad
https://live.staticflickr.com/4230/35411530940_e8115eaacd_o.jpg
https://live.staticflickr.com/4254/35411533710_40f70eaf21_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?

Quote:
Quote:
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
Quote:
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
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Adalbert



Joined: 30 Nov 2015
Posts: 862

PostPosted: Tue Jan 14, 2020 8:38 am    Post subject: Reply with quote

Hello Rik,
Have you already taken a look at that https://www.sciencedirect.com/topics/immunology-and-microbiology/heteroptera ?
BR, ADi
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rjlittlefield
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Joined: 01 Aug 2006
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Location: Richland, Washington State, USA

PostPosted: Tue Jan 14, 2020 9:07 am    Post subject: Reply with quote

Adalbert wrote:
Have you already taken a look at that https://www.sciencedirect.com/topics/immunology-and-microbiology/heteroptera ?

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
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Adalbert



Joined: 30 Nov 2015
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PostPosted: Tue Jan 14, 2020 9:26 am    Post subject: Reply with quote

Hello Rik,
Sorry, I don’t know, because of the paywall Sad

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/biologie-und-lebenszyklus-biology-and-life-cycle.html

BR, ADi
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