Autor Thema: Lycosidae? => Pardosa cf. trailli  (Gelesen 1240 mal)

Magne Farlund

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Lycosidae? => Pardosa cf. trailli
« am: 2009-08-27 11:24:03 »
I found this spider in low grass by a river, in a culture landscape. It's about 8mm long. Hope someone can help me with the ID.

Magne.
« Letzte Änderung: 2009-08-29 14:06:06 von Lars Friman »

Michael Hohner

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Re: Lycosidae?
« Antwort #1 am: 2009-08-27 12:20:20 »
This could be Pardosa trailli or P. eiseni.

Glenn Halvor Morka

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Re: Lycosidae?
« Antwort #2 am: 2009-08-27 14:23:27 »
I think Michael is right about the id of this spider.

According to  Malmquist P.trailli is found in mires with sedges, stony shores of lakes, and slopes with scree. It`s sternum is very dark, nearly black. Venter is dull reddish brown of colour.

P. eiseni is found in subalpine birch areas. Septal ridge of the epigyne is expanded posteriorly with 3 large svellings, while P.trailli has two svellings.


My guess would be a Pardosa trailli.

Glenn.


« Letzte Änderung: 2009-08-27 16:21:31 von Glenn Halvor Morka »
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Magne Farlund

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Re: Lycosidae?
« Antwort #3 am: 2009-08-27 16:33:52 »
@Michael and Glenn!

Thank you both for answering.
When I first saw the epigyne I thought: Ah, this one I can ID. But no. I looked at Arctosa first, then Pardosa, and eventually all Lycosidae. But I didn't find a match on the epigyne. I even find that hard now, with your suggestions, both according to the drawings in Roberts (P. trailli) and Almquist. Either the epigyne has some significant natural variations, or the drawings are inaccurate.

Between those two suggestions, I believe, as Glenn, that this is a P. trailli. (Maybe you should make a better epigyne-drawing, Glenn?).

Magne.

Glenn Halvor Morka

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Re: Lycosidae?
« Antwort #4 am: 2009-08-27 16:58:43 »
Magne:
-If you`ll send me a uncomprimized picture of the epigyne, I`ll try to make a drawing of it. As you say, there is a quite big difference in the illustrations of this epigyne from Almquist and Roberts.


Glenn.
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Magne Farlund

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Re: Lycosidae?
« Antwort #5 am: 2009-08-27 17:28:59 »
@ Glenn

And the biggest difference is between the drawings and the original. I'll mail you the photo.

Magne.