Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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 Syrphidae larvae?
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| Ness |
Posted on 27-01-2016 16:42
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Member Location: Posts: 8 Joined: 23.07.15 |
Hi, I found a bunch of larvae like this one on cereal stems in Catalonia (north-eastern Spain) in Spring (May-June) and I kept them in ethanol 70º. I thought it was a Syrphidae, but the key I am using (from: “AN INTRODUCTION TO THE IMMATURE STAGES OF BRITISH FLIES: DIPTERA LARV AE, WITH NOTES ON EGGS, PUPARIA AND PUPAE”, by KGV Smith) says: “- Posterior spiracles close together on a fused process of varying length, from short to an elongate retractile tube (figs 252-281). -> Syrphidae (p. 80) - Posterior spiracles not on a fused process and, if appearing fused, then lacking spicules, tubercles or dense pubescence . 11” And as I can’t see spicules, tubercles or pubescense, I am not so sure. Posterior spiracles are fused but on a very short process. They are all about 0.7 - 1 cm long. I know these aren't great pictures but could someone confirm if this is or isn’t a Syrphidae? Thanks! Ness attached the following image:  [90.33Kb] Edited by Ness on 27-01-2016 17:14 |
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| Ness |
Posted on 27-01-2016 17:16
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Member Location: Posts: 8 Joined: 23.07.15 |
general view :
Ness attached the following image:  [39.86Kb] |
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| Ectemnius |
Posted on 27-01-2016 20:27
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Member Location: The Netherlands Posts: 846 Joined: 22.11.11 |
Hi Ness, Certainly looks like a Syrphidae to me. If you wanna find out you might try using the keys in: An introduction to the imaatures stages of British Flies found here: http://www.royensoc.co.uk/content/out-print-handbooks Greetings, Ectemnius |
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| Ness |
Posted on 28-01-2016 11:34
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Member Location: Posts: 8 Joined: 23.07.15 |
Thank you!  That's the key I am using, but thanks anyway.
Edited by Ness on 28-01-2016 11:35 |
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| atylotus |
Posted on 28-01-2016 13:13
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 Member Location: Amsterdam, NL Posts: 1140 Joined: 29.05.09 |
Syrphidae is o.k. Try Rotheray's key for genuslevel: http://www.dipter...Larvae.pdf |
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| Ness |
Posted on 28-01-2016 13:20
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Member Location: Posts: 8 Joined: 23.07.15 |
This key seems really useful. Thank you! I'll try it |
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| Ectemnius |
Posted on 28-01-2016 13:25
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Member Location: The Netherlands Posts: 846 Joined: 22.11.11 |
Dohhhh..... Reading the description accurately is what I didn't do!  |
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