Hello, this specimen was collected at light, lenght 4.4 mm
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| Laccophilus minutus (Linnaeus, 1758) - Dytiscidae Laccophilinae http://www.entomologiitaliani.net/public/forum/phpBB3/viewtopic.php?f=159&t=101642 |
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| Autore: | alexaandru [ 08/02/2023, 22:19 ] | ||
| Oggetto del messaggio: | Laccophilus minutus (Linnaeus, 1758) - Dytiscidae Laccophilinae | ||
Hello, this specimen was collected at light, lenght 4.4 mm
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| Autore: | Nicola [ 09/02/2023, 9:15 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
Laccophilus sp. 
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| Autore: | Plagionotus [ 09/02/2023, 10:57 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
The proonotum expands with a V towards elytra. It should be minutus, but check if the metacoxae have a sort of "waves in the sand" (stridulatori organs". |
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| Autore: | alexaandru [ 09/02/2023, 11:03 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
Thanks a lot guys!  , I was thinking about minutus, too. I will check the metacoxae soon, but first I need to unglue the beetle  |
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| Autore: | alexaandru [ 10/02/2023, 15:17 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
What do you think?  |
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| Autore: | Limnebius [ 10/02/2023, 16:29 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
you should push down the metaleg. The stridulatory files, when present, are close to where the metacoxal process begins |
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| Autore: | alexaandru [ 10/02/2023, 19:04 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
I can see some fine ridges, but I am not sure if they are stridulatory organs or not, probably not, so it should be minutus, right? |
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| Autore: | Limnebius [ 11/02/2023, 19:22 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
the stridulatory files make a sort of arc of fine striae at each side of the metacoxal process, here I can't see them, therefore I confirm Laccophilus minutus (Linnaeus, 1758)
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| Autore: | alexaandru [ 11/02/2023, 19:55 ] |
| Oggetto del messaggio: | Re: Dytiscidae for ID |
Thanks a lot Mario!
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