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Elasmostethus vs Acanthosoma Two species that often get confused in photo-IDs, despite the obvious difference in size and numerous other differences you (well, me that is ;o) always have to look twice ... like in this example:<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/67560/elasmostethus_interstinctus_-_acanthosoma_lookalike.html" title="Elasmostethus interstinctus - Acanthosoma lookalike"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3043/67560_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1571270410&Signature=OjhRvH2kR9XrbxB3HLyrad0vQmc%3D" width="200" height="150" alt="Elasmostethus interstinctus - Acanthosoma lookalike Viewing angle and variance in this specimen make it a close lookalike for Acanthosoma haemerroidale:<br />
1st antennal segments seem relatively long (head bent down)<br />
Shoulders quite produced<br />
Base of pronotum/scutellum seems quite arched<br />
Punctuation on scutellum is relatively wide spread for Elasmostethus<br />
Dark abdomen and coloured wing membranes make it clear we&#039;re looking at Elasmostethus interstinctus<br />
This image was uploaded to illustrate pitfalls when ID-ing photos. Look here for some characters:<br />
https://www.jungledragon.com/image/67517/elasmostethus_vs_acanthosoma.html Acanthosomatidae,Birch shieldbug,Elasmostethus,Elasmostethus interstinctus,Geotagged,Netherlands,Pentatomoidea" /></a></figure><br />
For comparison to other Acanthosomatidae see here:<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/67516/acanthosomatidae_-_relative_sizes_and_characters.html" title="Acanthosomatidae - relative sizes and characters"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3043/67516_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1571270410&Signature=lAbTBC328q62H8XNB1ZpWrZ4ng4%3D" width="200" height="132" alt="Acanthosomatidae - relative sizes and characters While sifting through my images of Pentatomoidea I decided to make a new version of this old collage:<br />
https://commons.wikimedia.org/wiki/File:Acanthosomatidae_sizes.jpg<br />
It shows representatives of the main genera of Acanthosomatidae in Europe, side by side and resized to illustrate their relative size difference as well as some helpful characters indicated:<br />
Blue: Length of 1st antenna segment relative to head<br />
Red: Relative width of base of pronotum and scutellum<br />
Green: Base of pronotum/scutellum much more strongly arched on Acanthosoma haemorrhoidale vs Elasmostethus interstinctus<br />
Yellow: Scutellum more densely punctured on Elasmostethus interstinctus vs Acanthosoma haemorrhoidale<br />
<br />
Other helpful characters include the red/black banded abdomen under the wing membrane on Acanthosoma haemorrhoidale vs all black on Elasmostethus interstinctus and the dark lateral triangles in the membranes of Elasmostethus interstinctus vs all clear membranes on Acanthosoma.<br />
Here is some more help on Elasmostethus and Acanthosoma:<br />
https://www.jungledragon.com/image/67517/elasmostethus_vs_acanthosoma.html Acanthosoma,Acanthosoma haemorrhoidale,Acanthosomatidae,Cyphostethus,Cyphostethus tristriatus,Elasmostethus,Elasmostethus interstinctus,Elasmucha,Elasmucha grisea,Heteroptera ID help,Pentatomoidea" /></a></figure> Acanthosoma,Acanthosoma haemorrhoidale,Acanthosomatidae,Elasmostethus,Elasmostethus interstinctus,Heteroptera ID help,Pentatomoidea Click/tap to enlarge

Elasmostethus vs Acanthosoma

Two species that often get confused in photo-IDs, despite the obvious difference in size and numerous other differences you (well, me that is ;o) always have to look twice ... like in this example:

Elasmostethus interstinctus - Acanthosoma lookalike Viewing angle and variance in this specimen make it a close lookalike for Acanthosoma haemerroidale:<br />
1st antennal segments seem relatively long (head bent down)<br />
Shoulders quite produced<br />
Base of pronotum/scutellum seems quite arched<br />
Punctuation on scutellum is relatively wide spread for Elasmostethus<br />
Dark abdomen and coloured wing membranes make it clear we're looking at Elasmostethus interstinctus<br />
This image was uploaded to illustrate pitfalls when ID-ing photos. Look here for some characters:<br />
https://www.jungledragon.com/image/67517/elasmostethus_vs_acanthosoma.html Acanthosomatidae,Birch shieldbug,Elasmostethus,Elasmostethus interstinctus,Geotagged,Netherlands,Pentatomoidea

For comparison to other Acanthosomatidae see here:
Acanthosomatidae - relative sizes and characters While sifting through my images of Pentatomoidea I decided to make a new version of this old collage:<br />
https://commons.wikimedia.org/wiki/File:Acanthosomatidae_sizes.jpg<br />
It shows representatives of the main genera of Acanthosomatidae in Europe, side by side and resized to illustrate their relative size difference as well as some helpful characters indicated:<br />
Blue: Length of 1st antenna segment relative to head<br />
Red: Relative width of base of pronotum and scutellum<br />
Green: Base of pronotum/scutellum much more strongly arched on Acanthosoma haemorrhoidale vs Elasmostethus interstinctus<br />
Yellow: Scutellum more densely punctured on Elasmostethus interstinctus vs Acanthosoma haemorrhoidale<br />
<br />
Other helpful characters include the red/black banded abdomen under the wing membrane on Acanthosoma haemorrhoidale vs all black on Elasmostethus interstinctus and the dark lateral triangles in the membranes of Elasmostethus interstinctus vs all clear membranes on Acanthosoma.<br />
Here is some more help on Elasmostethus and Acanthosoma:<br />
https://www.jungledragon.com/image/67517/elasmostethus_vs_acanthosoma.html Acanthosoma,Acanthosoma haemorrhoidale,Acanthosomatidae,Cyphostethus,Cyphostethus tristriatus,Elasmostethus,Elasmostethus interstinctus,Elasmucha,Elasmucha grisea,Heteroptera ID help,Pentatomoidea

    comments (1)

  1. This is fantastic! Posted 11 months ago

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By Pudding4brains

Public Domain
Uploaded Oct 10, 2018.