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Oscinella trochanterata (Chloropidae)
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Renko |
Posted on 06-04-2016 15:26
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Member Location: North of France Posts: 2371 Joined: 08.10.13 |
Hello, A Chloropidae found in North of France, Clairmarais, the 09 june 2015, in Grass, in a mainly decidious Identified as Oscinella trochanterata by Dr. Michael von Tschirnhaus and Dr. John Deeming. Lots a Thanks to them ! Greetings, Thomas Renko attached the following image: [156.79Kb] Edited by Renko on 06-04-2016 16:19 |
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Renko |
Posted on 06-04-2016 15:27
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Member Location: North of France Posts: 2371 Joined: 08.10.13 |
2nd picture
Renko attached the following image: [190.22Kb] |
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von Tschirnhaus |
Posted on 08-04-2016 17:37
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Member Location: Bielefeld, Germany Posts: 431 Joined: 04.11.07 |
Oscinella trochanterata Collin, 1946, Chloropidae. One of the few monophagous Oscinella species with peculiar characters for a correct identification, A) published, here firstly recorded: A) all knees (tips of femora) bright yellow in a larger extent than the diameter of the distal end of femur, front- and mid-tibia bright yellow, trochanter of fore-leg yellow, [hidden in both images]; 5th tarsal segment of mid-leg distinctly longer and wider than the 3rd, 4th segment very short and deeply emarginate distally; wings distinctly exceeding the tip of abdomen and slightly „smoky“; ocellar triangle 3/4 or 4/5 the length of the frons. Arista with longer pubescence than in other species, 3rd antennal segment in lateral view slightly axe-shaped (not round) and with a sharp apical edge in its upper third and inside the base of the arista; all claws longer and stronger arcuated than in other European Oscinella species; between the last sternite and the male terminalia a distinct transverse unsclerotized flap pointing ventrally. Larvae feed gregariously inside the developing stem and inflorescence of the reed canary grass, Phalaroides (= Phalaris) arundinacea, [confirmed by my own rearing result]. The species shares its larval substrate with O. angularis Collin, 1946, an interesting example opposed to the „Rule of Competitive Displacement“. A record of Bromus as host grass should be confirmed. |
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