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Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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Sciaridae or Mycetophilidae larvae ?
sofija
#1 Print Post
Posted on 29-03-2012 20:35
Member

Location: Luxembourg
Posts: 3
Joined: 28.03.12

Hi,

I found those larvae under the bark of a fallen tree in Brussels, Belgium.
Length : +- 10 mm

www.galerie-insecte.org/galerie/image/dos82/big/worm.jpg
Sophie Leguil : Belgique : Bruxelles : 1160 : 08/03/2012
Altitude : NR - Taille : 10
Rιf. : 82487

I can't choose between Sciaridae and Mycetophilidae, what are the distinctive features?

Thanks,
Sophie
 
Cranefly
#2 Print Post
Posted on 30-03-2012 19:05
Member

Location: Shachovskaya
Posts: 647
Joined: 17.09.08

Look like Sciaridae. Sclerotized plates of the head capsule ventrally have different structure.
- Epicranial plates of head contact or close at one point, or widely separated on ventral side. If epicranial plates contact at 2 points, bordering oval median membranous area, then they contact anteriorly at significance distance (usually 1/3-1/2 of the head capsule). Body usually with thick, not transparent, cuticle. In fruiting bodies and on surface of fungi, on surface of decaying wood under cases, under bark, in wood pierched by mycelium …………………………….………Mycetophilidae
- Epicranial plates contact at 2 points on ventral side, anteriorly at short distance, bordering oval median membranous area. Larvae whitish or yellow, tranparent, with well developed black head. In soil rich with humus, in litter, under bark, in decaying wood ………………………………………………...…..Sciaridae Smile
 
Cranefly
#3 Print Post
Posted on 30-03-2012 19:14
Member

Location: Shachovskaya
Posts: 647
Joined: 17.09.08

Smile
Edited by Cranefly on 30-03-2012 19:18
 
sofija
#4 Print Post
Posted on 02-04-2012 10:44
Member

Location: Luxembourg
Posts: 3
Joined: 28.03.12

Cranefly wrote:
Look like Sciaridae. Sclerotized plates of the head capsule ventrally have different structure.
- Epicranial plates of head contact or close at one point, or widely separated on ventral side. If epicranial plates contact at 2 points, bordering oval median membranous area, then they contact anteriorly at significance distance (usually 1/3-1/2 of the head capsule). Body usually with thick, not transparent, cuticle. In fruiting bodies and on surface of fungi, on surface of decaying wood under cases, under bark, in wood pierched by mycelium …………………………….………Mycetophilidae
- Epicranial plates contact at 2 points on ventral side, anteriorly at short distance, bordering oval median membranous area. Larvae whitish or yellow, tranparent, with well developed black head. In soil rich with humus, in litter, under bark, in decaying wood ………………………………………………...…..Sciaridae Smile


Thanks for the help! Smile
 
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