Diptera.info :: Identification queries :: Diptera (adults)
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 Atylotus latistriatus?
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| clovis |
Posted on 12-02-2014 20:04
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Member Location: North France, lille Posts: 914 Joined: 08.06.10 |
Hi, Here is an Atylotus from north Romania found in a wet environment. I think it's Atylotus latistriatus. I have small hesitation with A agricola, but it is said his presence in Europe is doubtful. I see basal segment with black hairs on top, but white hairs below this segment... And I see hairs on vertex (on posterior part) but i can't say they are very short, neither very long... What do you think?  Clovis : Roumanie : Vale : 00000 : 5/8/2013 Altitude : 520 m - Taille : 14mm Réf. : 114865  Clovis : Roumanie : Vale : 00000 : 5/8/2013 Altitude : 520 m - Taille : 14mm Réf. : 114867 |
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| libor |
Posted on 12-02-2014 20:44
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Member Location: western Bohemia Posts: 1274 Joined: 30.05.09 |
I would say Atylotus fulvus male, but my experiance with Atylotus is limited. Libor |
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| Zeegers |
Posted on 13-02-2014 10:42
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Member Location: Soest, NL Posts: 18724 Joined: 21.07.04 |
I think it is impossible to call, since we can't see the abdomen properly. The femora are pretty dark and the head is not that big, so I'd think latistriatus is not unlikely. Clovis, can you elaborate on ' wet environment '. Coastal ? Theo |
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| clovis |
Posted on 14-02-2014 17:33
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Member Location: North France, lille Posts: 914 Joined: 08.06.10 |
Thank you for you opinions. Sorry i don't have better picture than this one in vivo where we can see the abdomen  But here is the dry specimen(traveled in alcohol):  I had ruled out fulvus because there is hairs on eyes.  Not costal, it is central/ north Rumania (you can click on the number under the first pictures, it show you the exact geolocalisation) Habitat: i said wet, but not the all area is: it looks like they must be some little stream i didn't see that run around, so there is plants from humid area (like reeds), and also fauna (i saw a grasshopper specie that only lives in wet area). But all around it is fields. No woods. |
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| clovis |
Posted on 22-02-2014 17:39
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Member Location: North France, lille Posts: 914 Joined: 08.06.10 |
So is it possible to statue? |
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| Zeegers |
Posted on 22-02-2014 22:40
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Member Location: Soest, NL Posts: 18724 Joined: 21.07.04 |
Clovis, you are making a mistake. (Nearly) all males of Atylotus have hairy eyes, so that is not a feature to separate fulvus from latistriatus. However, other features, as the leg colouration, size of head, abdominal pattern are inconsistent with fulvus. It is either a male latistriatus or a very light rusticus. Theo |
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| clovis |
Posted on 23-02-2014 16:32
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Member Location: North France, lille Posts: 914 Joined: 08.06.10 |
You are right, i was following female's key...  Sorry for that mistake So difference between both is by the coloration of hairs on this abdominal stripe? I see them all pale, so that would mean rusticus? |
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| Sergiy Filatov |
Posted on 23-02-2014 20:35
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Member Location: Kharkiv, Ukraine Posts: 259 Joined: 22.10.10 |
Hi Clovis, Possibly, to find out whether it's rusticus or latistriatus we should take a look on the ventral side of the abdomen. I do not know if it's a reliable character but in addition to dark median stripe on terga, latisriatus should have dark median patch at the anterior margin of the 2nd sternite (sometimes reaching 3d sternite), while rusticus has a narrow dark median stripe on the anterior four sternites. At least the presence of the dark spot on the 2nd sternite is stated by Olsufjev in his key as diagnostic character to distinguish males of A. latistriatus from A.loewianus (altough in Chvala's descriptions the spot present in both species, so I'm really perplexed with that  )... Theo, will you comment on the usability of such characters? After all, habitat clearly favours rusticus. So, probably there is no need to turn round the specimen  |
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