Diptera.info :: Identification queries :: Diptera (adults)
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 Tachinidae (parasitoid of Acronicta rumicis)
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| Rui Andrade |
Posted on 17-10-2008 03:02
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 Member Location: Portugal Posts: 3122 Joined: 19.06.07 |
On the last 29th of September, I found a dead larva of Acronicta rumicis. It was parasitized by braconid wasps (I think). Luckily, I didn't throw away the dead larva, and today a tachinid emerged. Its pupa was inside the lepidopteran larva's body. location: Barcelos, Portugal      |
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| Zeegers |
Posted on 17-10-2008 10:34
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Member Location: Soest, NL Posts: 18739 Joined: 21.07.04 |
The classcial Tachinid for Acronicta is Nilea hortulana, but this is something different. Eyes bare. Somehow, it looks more like Exorista, in which case it is a male rustica or similar species (genitalia needed). Theo |
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| Jaakko |
Posted on 17-10-2008 12:35
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 Member Location: Joensuu, Finland Posts: 479 Joined: 04.08.08 |
Nice! Fold in the m-vein bend, white hairs behind the head and frontal bristles reaching fairly down indicate indeed Exorista. E. rustica should be a parasitoid of Symphyta and this guys pruinosity is quite whitish. If it has 4 dc, then its likely larvarum (based on the biotope), although some Southern species can not be excluded. Difficult genus and the Mitteleuropas key is not very good distinguishing these. For example Finnish specimens of fasciata key out as larvarum so investigation of genitalia is needed. Jaakko |
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| Rui Andrade |
Posted on 17-10-2008 14:03
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Member Location: Portugal Posts: 3122 Joined: 19.06.07 |
Thank you Theo and Jaakko for your help . |
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