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 Malaysia: Elongatopothyne basirufipennis ?		  New Topic  Reply to Topic
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loongfah
Member Purpuricenus

Singapore
376 Posts
Posted - 11/12/2016 :  20:08:55  Show Profile  Email Poster  Reply with Quote

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Malaysia: Perak

Very long antenna without white.
Agapanthiini sp.? Not sure what genus.
Edited by - Xavier on 08/01/2017 09:48:28

Xavier
Scientific Collaborator

France
12338 Posts
Posted - 12/12/2016 :  10:14:35  Show Profile  Email Poster  Reply with Quote
An Agapanthiini ?
Edited by - Xavier on 12/12/2016 10:17:49
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dryobius
Member Rosenbergia

USA
1889 Posts
Posted - 12/12/2016 :  13:48:45  Show Profile  Email Poster  Reply with Quote
Antennal sockets are usually very close together for Agapanthiini.
It could be Nyctimenius??
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Beckey
Member Rosalia

Japan
553 Posts
Posted - 07/01/2017 :  23:24:03  Show Profile  Email Poster  Reply with Quote
Pseudocalamobius sp.
Edited by - Beckey on 07/01/2017 23:24:19
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loongfah
Member Purpuricenus

Singapore
376 Posts
Posted - 08/01/2017 :  06:52:21  Show Profile  Email Poster  Reply with Quote
Thank you Shinichi for your suggestion! Isn't that the first Pseudocalamobius in Peninsular Malaysia region or you have collected them in Malaysia too?

Attached the bottom view and view of the fron. It seems that there are no concavities fringed with hairs at the base of 4th and 5th abdominal sternites (perhaps a female?), and is the fron vertical enough?


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Xavier
Scientific Collaborator

France
12338 Posts
Posted - 08/01/2017 :  09:47:53  Show Profile  Email Poster  Reply with Quote
Quite similar to holotype picture of Elongatopothyne basirufipennis Breuning, 1963
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Beckey
Member Rosalia

Japan
553 Posts
Posted - 08/01/2017 :  15:44:15  Show Profile  Email Poster  Reply with Quote
Hi loongfah,

I caught the beetle that seems to same genus as yours at Selangor.

I didn't recognized the genus Elomgatopothyne until I read this topic.

What is different between Elomgatopothyne and Pseudocalamobius?


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Xavier
Scientific Collaborator

France
12338 Posts
Posted - 08/01/2017 :  15:56:21  Show Profile  Email Poster  Reply with Quote
In Breuning's Laos fauna (1970)

. 3rd antennomera much shorter than 4th ...Elongatopothyne
. 3rd antennomera shorter than 4th ...Pseudocalamobius
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Xavier
Scientific Collaborator

France
12338 Posts
Posted - 08/01/2017 :  16:18:46  Show Profile  Email Poster  Reply with Quote

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Pseudocalamobius discolineatus Pic, 1927 & Elongatopothyne basirufipennis Breuning, 1963 from Laos.
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Beckey
Member Rosalia

Japan
553 Posts
Posted - 09/01/2017 :  00:36:36  Show Profile  Email Poster  Reply with Quote
Thank you, Xavier.

According to these image, the antennomere ratio of 3rd/4th is as below.

loongfah:0.74
Beckey:0.63
Xavier left:0.71
Xavier right:0.61

Wow..., the key doesn't function well. Then, I checked Breuning's Laos fauna.

Front non ou peu r#233;tr#233;ci vers le dessous... Elongatopothyne
Front tr#232;s sensiblement r#233;tr#233;ci vers le dessous ... Pseudocalamobius

As a result, we should check frons.
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loongfah
Member Purpuricenus

Singapore
376 Posts
Posted - 09/01/2017 :  03:13:33  Show Profile  Email Poster  Reply with Quote
The frons of my specimen does not seem to narrow significantly, thus it seems to point to Elongatopothyne:




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Xavier
Scientific Collaborator

France
12338 Posts
Posted - 09/01/2017 :  10:51:23  Show Profile  Email Poster  Reply with Quote

100.18 KB

For me, the feature of length of antennomera 3 & 4 works very well .

There is another feature to look ( V signs on picture) :

Tuber of antenna low -> Elongatopothyne
Tuber of antenna very high -> Pseudocalamobius
Edited by - Xavier on 09/01/2017 13:12:36
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Beckey
Member Rosalia

Japan
553 Posts
Posted - 09/01/2017 :  13:19:46  Show Profile  Email Poster  Reply with Quote
Head and frons of my specimens ( I don't have Elongatopothyne ).

I can't find how to distinguish these genera, but my Malaysian one resembles loongfah's one.


112.46#160;KB
Edited by - Beckey on 09/01/2017 13:28:53
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Xavier
Scientific Collaborator

France
12338 Posts
Posted - 09/01/2017 :  13:29:11  Show Profile  Email Poster  Reply with Quote
Hi Shinichi,
I think your specimen belongs to Elongatopothyne genus because of length of antennomera 3 and 4(very long), and shape of tuber of antenna ( high ).
Edited by - Xavier on 09/01/2017 13:29:41
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Beckey
Member Rosalia

Japan
553 Posts
Posted - 12/01/2017 :  12:47:24  Show Profile  Email Poster  Reply with Quote
Do you mean like this?


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Xavier
Scientific Collaborator

France
12338 Posts
Posted - 12/01/2017 :  13:07:46  Show Profile  Email Poster  Reply with Quote
Yes, that's what I understand.
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