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 mixed Cerambycoidea
 fossil and subfossil Cerambycids
 Baltic Amber Eurocrossotus alekseevi n. gen. & sp.
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Francesco
Forum Admin

Luxembourg
9186 Posts

Posted - 16/05/2017 :  16:16:03  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote




A new aquisition, close to be described.
In my opinion, similar to Brasiliosoma tibiale (Breuning, 1948) (Compsosomatini) with some problems concerning its distribution.

Your opinion?

Xaurus
Member Rosenbergia

Germany
1738 Posts

Posted - 16/05/2017 :  18:43:30  Show Profile  Email Poster  Reply with Quote
why not belongs to Similosodus or Mispila, I cannot see the 3. and 4. antennomeres.
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Xavier
Scientific Collaborator

France
11568 Posts

Posted - 16/05/2017 :  18:58:11  Show Profile  Email Poster  Reply with Quote
Do you have a picture of the back ?

Edited by - Xavier on 16/05/2017 18:58:27
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Francesco
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Luxembourg
9186 Posts

Posted - 16/05/2017 :  19:20:46  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote


Left antenna.
Antennomeres IV-V are lost.

Similosodus or Mispila, good suggestion, but the scape seems to be really short.

Xavier, I have to cut the amber piece in order to take better pictures.
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Francesco
Forum Admin

Luxembourg
9186 Posts

Posted - 18/05/2017 :  14:47:04  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote

366.44 KB

There is the pronotum.
With lateral teeth; it reminds the genus Frea...
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Francesco
Forum Admin

Luxembourg
9186 Posts

Posted - 19/05/2017 :  21:27:58  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
Mesotibiae are without furrow and claws are opposite: it is the first fossil representative of Crossotini.
In my opinion, it is close to the Malagasy Lasiocercis and Tlepolemoides.
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Jérôme Sudre
Member Rosenbergia

France
1707 Posts

Posted - 21/05/2017 :  20:25:04  Show Profile  Email Poster  Reply with Quote
Bonsoir Francesco oui en effet il a des similitudes avec les Tlepolemus. Mais ressemble aussi au genre Mispila.
Une chose ! S'agit il d'un mâle ou d'une femelle ??
Si c'est un mâle les Tlepolemus présentent sur chaque mandibule un appendice ou excroissance fines et droites (comme des petites cornes dirigée vers l'avant) sur les mandibules comme le Chemsakielus ou Cornuchariesthes etc..
Par ailleurs il me semble que les fémurs sont fortement claviformes sur la bête en photo ce qui est le cas aussi chez Tlepolemus mais bien moins marqué.
Bonne soirée
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Francesco
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Luxembourg
9186 Posts

Posted - 10/07/2021 :  11:05:03  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote

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Voilà une première reconstruction de la bête.
C'est bien une femelle.
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Francesco
Forum Admin

Luxembourg
9186 Posts

Posted - 10/01/2022 :  18:58:57  Show Profile  Email Poster  Visit Francesco's Homepage  Reply with Quote
I finally named this species Eurocrossotus alekseevi gen. n., sp. n., the first fossil member of Crossitini.

You can download the PDF here.
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Xavier
Scientific Collaborator

France
11568 Posts

Posted - 10/01/2022 :  19:58:11  Show Profile  Email Poster  Reply with Quote
Wouah !
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Xavier
Scientific Collaborator

France
11568 Posts

Posted - 10/01/2022 :  20:18:43  Show Profile  Email Poster  Reply with Quote
Comment fais-tu tes magnifiques dessins, Francesco ?
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