|[Note Guidelines] Photographer's Note|
|The Alpine swift louse fly, Crataerina melbae, Alpensegler-Lausfliege, (Diptera: Hippoboscidae) is a remarkable parasite: it sucks the blood from young birds in the nest. It's impressive claws allow them to adhere so well to the feathers that they are difficult to get rid off. Their wings are functionless. They give birth to fully developed puparia (chrysalids covered with the last larval cuticle) which are laid in te neighbourhood of swift nests. This pic was taken in Langenthal, Switzerland at the local Alpine swift colony on a slide, I scanned it and sharpened the pic.|
Argus, anel, pgmoni, dantor, cicindela has marked this note useful
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- [2006-12-09 4:53]
This is another fine shot taken and scanned in from your archives.
These parasitic flies look similar to those that often settle on our heads when we pick mushrooms and berries in the forests. Normally they are parasites on Elk so when they pester us, at least they don't bite us.
They are difficult to remove and have very resilient bodies.
Thanks for posting this and the info.
Best wishes, Ivan
- [2006-12-09 4:56]
Das sind ja wirklich Aliens ,diese Lausfliegen. Ich hab sie meinem Sohn gezeigt. Die Reaktion kannst du Dir vorstellen. Scharfes, gutes Bild und gute Notiz.
- [2006-12-12 15:39]
Superbe document d'un diptère que la majorité d'entre nous n'a jamais l'occasion d'observer.
Merci pour cette opportunité
- [2007-01-04 16:49]
Sujets intéressants mais qu'on préfère éviter, Dietrich. Image nette et bons détails. Une petite suggestion de présentation: couper un bon centimètre en haut et aussi quelques millimètres à droite pour éliminer le débordement noir. Bonne Année.
And here again we have an interesting picture with interestig fly species! :) I really like to watch photo with uncommon species! After many butterflies, dragonflies, or syrphid flies I like to see something nice for the "entomologist's eye" ;) The quality is really very good especially if we remember that it was taken over 30 years ago!!
On the other hand I have to say, that I really do not love ;> these fly family! Especially after the last field season, when during only 14 days of inverstigations in Spala Landscape Park (Cenral Poland) I collected (mailny from my head and hands) more than 25 individuals! :) Nothing nice, believe me ;)
Anyway, these flies are really nice when you look at them via microscope or - like in this case, on the photo :)
Thanks for showing something "non-commertial"!! :)