Diptera.info :: Identification queries :: Diptera (adults)
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 Some more Cylindromyias
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| Sundew |
Posted on 01-08-2008 21:42
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 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
Hi, This is an exciting genus. I compiled some more pics that don't show C. pusilla, the colouration is different. Numbers 1-4 were taken on 17 July. 1 and 2 should show the same animal as to the damaged wing edges, and 3 and 4 are another one. (We have many of them around.) - Number 5 is from 21 July and number 6 from 30 July, so I really can't tell whether # 5 is the same animal as # 1 or not. (The locality is always the same - when I have to wait for my dinner to be prepared I go to a meadow in front of the small restaurant and photograph flies for 15 minutes  .)I mentioned the white abdomen rings in another thread: sometimes they are conspicuous, on other pics they are hardly recognizable. It seems to be a light reflexion - ? So do all 6 pics show the same species, and which one? I'm very curious to learn! Many thanks, Sundew # 1-4 Sundew attached the following image:  [193.3Kb] |
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| Sundew |
Posted on 01-08-2008 21:43
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
# 5-6
Sundew attached the following image:  [130.65Kb] |
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| ChrisR |
Posted on 01-08-2008 23:21
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 Administrator Location: Reading, England Posts: 7699 Joined: 12.07.04 |
OK, I'm going to guess C. brassicaria ... but I'm not saying which it is!!  But there's bound to be one in there somewhere! |
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| Zeegers |
Posted on 02-08-2008 17:12
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Member Location: Soest, NL Posts: 18546 Joined: 21.07.04 |
It has discal setae on tergites and the basal scutellars are missing, so it can't be brassicaria. Dusting on thorax and presence of apical scutellar brisltes exclude interrupta. So auriceps would be the obvious option. I can't rule out intermedia, but it doesn't have the intermedia-jizz (third antennal segment too short...). Moreover, auriceps is muchmore common around Berlin... Theo |
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| Sundew |
Posted on 02-08-2008 19:40
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
Aha - all the same species, that's good to know. In the field, when you can't see any bristles, I appreciate a high probability to meet only one species of that size and colouration. Concerning C. brassicaria: Theo, you identified one of my Baltic flies from last summer as "probably brassicaria". It had no dark median mark in the red part of the abdomen. The five shown here have, and nevertheless you dropped Chris's guess only by bristle distribution and dusting. Is the abdominal colouration so variable and thus of no value? Regards, Sundew |
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