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sangamesh
Member Purpuricenus
India
426 Posts |
 Posted - 14/02/2017 : 18:02:33
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Loc: Kerala; This specimen is rather puzzling to me...It shows combination of characters of two genera viz., Diorthus and Dialeges...
closure study of this individual made me realize that, like the Diorthus, it has scape with cicatrix at the apex; antennae furnished with short fringe of brownish hairs and disc of prothorax with crown shaped impression (like the Indian species D. cinereus); however, the femur is not carinate along each side on ventral border and also, the elytral apex is slightly obliquely truncate with a spine at the sutural angle and outer angle dentate (unlike the Diorthus where the apex is truncate and with a spine at sutural angle alone)...
On the other hand, the specimen also shows the characters of the genus Dialeges,that is, head is elongate behind the eyes, eyes divided each into two lobes...if eyes are divided then the third antennomere must have been longer than the fifth but interestingly the third antennomere is shorter than the fifth in this case...
I'm curious as to what this individual could be?...any contributions to the identity of this individual are much welcome |
Edited by - Xavier on 31/07/2018 13:53:23 |
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 14/02/2017 : 19:07:06
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| Diorthus, with few doubts. |
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sangamesh
Member Purpuricenus
India
426 Posts |
Posted - 15/02/2017 : 02:05:09
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quote:
Originally posted by Francesco
with few doubts.
Can you please point me towards those... |
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sangamesh
Member Purpuricenus
India
426 Posts |
Posted - 15/02/2017 : 07:08:57
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Here I provide evidences as enlisted in my first post...I doubt if it really is a Diorthus
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 15/02/2017 : 08:30:17
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As I can see, this specimen show most of Diorthus-characters, i.e. scape with cicatrix, antennae fringed in male, antennomere III-IV nodose, III about as long as V, etc.
Eyes are not divided but still united by a fine line (I do not know if with or without ommatides).
Pronotum with two longitudinal oblique furrows and narrow interocular space fit well to D. cinereus.
Apical teeth and more elongated neck might be two peculiar characters of this species.
Femoral ridges are normally scarcely visible only on meso and metafemurs. Maybe they are even more reduced; however, I see them.
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sangamesh
Member Purpuricenus
India
426 Posts |
Posted - 15/02/2017 : 11:50:23
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| Thank you for the expertised advise...the eye lobes are connected by a line without ommatidia...carina on legs seems to be reduced (specimen is slightly greased, I need to work on that to get better view of legs)...so, this species is not known! |
Edited by - sangamesh on 15/02/2017 11:51:14 |
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Francesco
Forum Admin
Luxembourg
9420 Posts |
Posted - 17/02/2017 : 10:51:09
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| Maybe... however, I not see a reason to create a new genus or subgenus. |
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Xavier
Scientific Collaborator
France
12095 Posts |
Posted - 19/03/2017 : 14:53:03
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| Could you show a picture of prosternum ? |
Edited by - Xavier on 19/03/2017 14:53:18 |
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sangamesh
Member Purpuricenus
India
426 Posts |
Posted - 21/03/2017 : 14:01:10
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Here I attach the details of prosternum
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Xavier
Scientific Collaborator
France
12095 Posts |
Posted - 21/03/2017 : 17:17:15
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| Ok, if I understand M.Pic, your species should belong to subgenus Diorthus (Lamellocerambyx) like here |
Edited by - Xavier on 21/03/2017 18:23:56 |
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sangamesh
Member Purpuricenus
India
426 Posts |
Posted - 23/01/2018 : 17:46:54
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Does anybody Know Diorthus sericeus? this specimen and the other posted here seems to agree with the Gardner's description.
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Xavier
Scientific Collaborator
France
12095 Posts |
Posted - 23/01/2018 : 18:11:25
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| I do not know the hototype specimen of this species, but I agree with you, the silky yellowish pubescence fits very well. |
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Xavier
Scientific Collaborator
France
12095 Posts |
Posted - 30/07/2018 : 12:28:04
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| Holotype specimen of Diorthus sericeus is available here. |
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Xavier
Scientific Collaborator
France
12095 Posts |
Posted - 31/07/2018 : 13:52:41
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| So,it is Diorthus sericeus Gardner, 1939 male, still called Tapinolachnus sericeus (Gardner, 1939)in Titan database. |
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India: Diorthus sericeus
