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 Eristalis pertinax laying eggs or defecating
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| Ocellar view |
Posted on 13-04-2017 14:08
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Member Location: Switzerland Posts: 145 Joined: 06.04.17 |
This female syrphid was seen on 12 April 2017. Does it lay (or "throw"?) eggs? Do you have an idea about the genus / species? Location: Kerzers, Switzerland 438 m above sea Habitat: Found in a hedge, but there is also farmland a small forest and meadow nearby Size: approx. 16-17 mm If you have any idea what you see here please share your thoughts. Regards, Ov Ocellar view attached the following image:  [95.84Kb] Edited by Ocellar view on 18-04-2017 12:33 |
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| Ocellar view |
Posted on 13-04-2017 14:15
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Member Location: Switzerland Posts: 145 Joined: 06.04.17 |
Do we see an egg here?
Ocellar view attached the following image:  [93.49Kb] |
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| Juergen Peters |
Posted on 14-04-2017 19:47
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 Member Location: northwest Germany Posts: 14353 Joined: 11.09.04 |
Hello, Ocellar view wrote: This female syrphid was seen on 12 April 2017. Does it lay (or "throw"?) eggs? Do you have an idea about the genus / species? this is Eristalis pertinax. I am not sure, whether it is laying eggs this early in the year or is simply getting rid of excrements. Edited by Juergen Peters on 14-04-2017 19:47 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Ocellar view |
Posted on 18-04-2017 12:39
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Member Location: Switzerland Posts: 145 Joined: 06.04.17 |
Tank you very much for your reply! Regards, Ov |
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| Paul Beuk |
Posted on 18-04-2017 14:43
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 Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Extensive ovipositor movements, AFAIK, can be see after emergence, after mating and after oviposition. The first can be excluded as the specimen is rather tattered. Considering the date, perhaps an overwintering specimen that just woke up and is doing some muscle stretching or a specimen that just did some ovipositing but certainly not where you photographed it. Eggs will be deposited near water or very wet locations as the larvae are aquatic.
Paul - - - - Paul Beuk on https://diptera.info |
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