Autor Thema: Ero-key  (Gelesen 131 mal)

Frank van de Putte

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Ero-key
« am: 2019-01-10 15:24:11 »
Hello, I'm not sure if this is the right forum, but I have a comment about the "key" to the Ero-species; https://wiki.arages.de/index.php?title=Ero

According this key, these 2 species can be distinguished by the "zeichnung of the prosoma"; "Ero cambridgei ist von E. furcata durch die Prosomazeichnung unterscheidbar."
But when I look at the "species-pages" and pictures, of these 2 species, that does not seem to be the case; the markings on the prosoma seems to be quite variabel, especially with E.cambridgei.

I'm certainly not a specialist, but I have some doubt if this should be mentioned.

Maybe the markings on the sternum are a better characteristic?? Pierre Oger has an overview of these markings on his site; https://arachno.piwigo.com/index?/category/306-ero_cambridgei

I'm from the Netherlands, but I can read some German :-)

Tobias Bauer

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Re: Ero-key
« Antwort #1 am: 2019-01-10 16:39:17 »
Such remarks are very important. I can't remember this Prosoma-character from literature, but the Sternum-pattern is most probably a better way to differentiate them both resp. all, even though in some cases the genitals are still nedeed.

Tobias

Martin Lemke

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Re: Ero-key
« Antwort #2 am: 2019-01-12 07:59:18 »
I can't remember this Prosoma-character from literature, but the Sternum-pattern is most probably a better way

Ich hatte das eingefügt, weil die Prosomazeichnung tatsächlich ein sehr gutes Kriterium ist. Ich habe da einen gewichitigen Verbündeten: Theo Blick, der das auch mal erwähnte.

Dafür, dass das in der Literatur erwähnt wird, können wir, wenn es sich mal anbietet, ja sorgen. Im Moment habe ich aber andere Baustellen.

Martin
DAS waren noch Zeiten: Meine Erste Auslandsexkursion, Nowegen 2011.

Tobias Bauer

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Re: Ero-key
« Antwort #3 am: 2019-01-12 13:49:53 »
Ja, das ist ein wirklich gutes Merkmal...besonders für die Männchen!!!!

https://wiki.arages.de/index.php?title=Ero_cambridgei#/media/File:IMG_9709_Ero_cambridgei_male_Frits.jpg
https://araneae.nmbe.ch/gallery/photos/290

Frank is absolutely right... and I simply don't care who said what when I don't see proof (science is not a Stammtisch or politics), this character is not useful for males and the key is therefore wrong/or can be used just for females, but there is no such remark for the latter, which makes it wrong again.

Tobias