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Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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are Sarcophigidae viviparous?
Louis Boumans
#1 Print Post
Posted on 04-07-2005 11:31
Member

Location: NO Oslo
Posts: 261
Joined: 09.06.04

yesterday a witnessed a fem Sarcophagid, one of the larger species, squatting on the soil. When it flew away, it left behind a single small maggot ca. 2 mm, which quickly buried into the soil.
Could this be one of those species that develop in earthworms?

Louis
 
Jan HC Velterop
#2 Print Post
Posted on 05-07-2005 17:13
Member

Location: Enschede NL 7544 ZE 106
Posts: 56
Joined: 08.03.06

Many are; especially the earthworm-predators. Females fly around 2-3cm above the ground searching for the heaps of worm-excrements. Finding them, they land and walk over them. Sometimes they seem to go without action, sometimes they deposit living larvae. Larvae show negative geotropis and go down immediately. Sometimes you can also find females walking on the ground. It is then not always claer if they are looking for ovipositing or for finding food as excrements as they go against the wind.

In a pot I found fresh larvae creeping round in a horizontal plain at a depth of about 5-6cm. On being catched gravid old females frequently deposit larvae on your hand. The number of larvae 'available' does not seem to exceed 30-50.

For many species that predate on snails I have also the impression that Sarcophagidae are viviparous or at least ovo-viviparous.
Jan Velterop,
 
Louis Boumans
#3 Print Post
Posted on 05-07-2005 17:31
Member

Location: NO Oslo
Posts: 261
Joined: 09.06.04

Hi Jan,

thanks, I expected you would know this!
 
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29 January 2020 09:43
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