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 Tipula obscuriventris hosting endoparasitoids
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| solito de solis |
Posted on 22-09-2015 08:46
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 Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
The bigger Tipula obscuriventris larvae from the last video has been cut and opened to sample a piece of skin and verify the setae position and distribution on the abdominal segments And inside of the body there were 7 living larvae hung to the tracheal trunks at the level of segments VII, VIII These larvae have been observed anf we can see some pictures about a few features of its We suppose that they could be Tachinids larvae (Siphona ?) asTachinids are well-known to have this habit of endoparasiting Tipulids Here are the pictures. Larvae are 3 mm length, are white to transparent and fixed chitinously on the tracheal trunks of Tipula Please, we'll be very happy to make other pictures on these larvae if it could help to determinate better these organisms Just tell me what could be observed and photographied to reach this goal   prothoracic stigmate     dorsal view of cephalic skeleton  spicules all over the skin   YouTube Video merci for the attention saludos to diptera fellows SDS Edited by solito de solis on 22-09-2015 09:35 |
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| solito de solis |
Posted on 22-09-2015 14:46
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Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
I opened a new Tipula obscuriventris larva standing in the same sample This larvae was shorter (about 40 mm length) and I found another Diptera lava attached to tracheal trunks of Tipulida at the level of Abdomen Semgent II This larvae seemed to me to be wrapped by some organic "bag" well ornamented by tracheas  the wrapping bag is a little bit yellow colored with a chitinous black point where the Tachinid (?) larva sticks to the tracheal trunk of Tipula On the transparent segments of the endoparasitoid can be seen rows of dark spicules This larvae seemed to me to be older than the others larvae founded in the first observation Same cephalic skeleton and a little piece of dark material found in each of all those larvae: is it the tool used to puncture the Tipula trachea ? merci pour l'attention the Tipula larvae opened and the (Tachinid) endoparasit visible   The larva parasitoid is wrapped in a organic cuticule  aspect of the spicules raws on the abdominal segments    POsterior stigmata  |
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