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 Ephydridae Hydrellia puparium ? > Hydrellia
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| solito de solis |
Posted on 23-11-2015 15:16
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 Member Location: Posts: 404 Joined: 05.08.13 |
Hey friends puparium preserved in formaline/alcohol (5 years old), collected in freshwater stream larva present in one but so breakable it was impossible to manipulate it an adult (?) present in the darker one Length of the puparium 3.2 mm this one with the adult inside  lateral and dorsal view of 2 pupae  Tip of the anal segment (siphon ?)  spicules on each abdominal segment VV  First segment tip (where the cephalopharyngeal skeleton is fixed inside) Frontal view  cephalopharyngeal skeleton very simple  the adult (?) DV links VV right  merci for the attention SDS Edited by solito de solis on 23-11-2015 20:03 |
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| atylotus |
Posted on 23-11-2015 19:43
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 Member Location: Posts: 1112 Joined: 29.05.09 |
Yes, these are the puparia of hydrellia. However, there are parasitic hymenoptera, possibly Ichneumonidae in the skin. Many hydrellia are parasitized, usually only 50% or so contain the fly. The posterior spiracles are 2 pointed elongations to pierce the plants' parenchym for oxygen uptake.
Edited by atylotus on 23-11-2015 19:47 |
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| solito de solis |
Posted on 23-11-2015 20:03
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Member Location: Posts: 404 Joined: 05.08.13 |
Thanks Do you mean that this adult is not Hydrellia... I can believe as I'm a beginner and I dont'know really what happens outside the water But Ichneumonidae have 4 wings, two anterior and two posterior and here there is only 1 pair Wings pad But the antennae of Hydrellia are really not so long !! I have a picture of the mouth.. perhaps this will confirm Ichneumonidae I will post it in a moment SDS SDS |
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| atylotus |
Posted on 24-11-2015 07:56
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Member Location: Posts: 1112 Joined: 29.05.09 |
The adult is definitely no fly but a parasitic wasp. |
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| solito de solis |
Posted on 24-11-2015 13:22
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Member Location: Posts: 404 Joined: 05.08.13 |
merci Atylotus I try to understand what happened. If the pupa has traces of larvae Hydrellia spicules, if the pupa has the shape of a pupa Hydrellia, if it is found in the pupa a cephalopharyngeal skeleton of the larvaa attached to the front tip of the pupa, I have to think that the larva existed to the end of his development. When therefore the parasitism? The wasp lays its eggs in the larva and an egg grows and develops digesting what is in the pupa before itself becoming an adult as seen in the photo? I have found an answer here http://entnemdept...mbiana.htm merci Edited by solito de solis on 24-11-2015 13:46 |
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| solito de solis |
Posted on 24-11-2015 18:58
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Member Location: Posts: 404 Joined: 05.08.13 |
After a better observation (and dissolution of CHOH polymers stiking the organism) I have to apologize, the adult insect (wasp) had 2 pairs of wing pads A better picture of the head of Hydrellia  SDS Edited by solito de solis on 24-11-2015 18:59 |
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but don't see the image in the post.
