Posted by MichelAngel on 24-09-2018 10:50
#9
Thank you very much for this page, it is really useful.
I see a black/dark palpi.
I tried to do all my best and this is what I see... I think that fits with P. rudis.
Thank you very much.
Miguel Ángel
johnes81 wrote:
Dr. Rognes has alot of material available for free at his website. Most groups are covered. Just search the page for Pollenia to find the publications.
http://www.knut-r...ology.html
at this point, it will be easier to work with the specimen by looking at the color of the palpi.
are the palpi black/dark with a pale tip or orange/yellow?
nota bene: strong lighting can make the dark palpi appear to be yellowish (a sort of transparency). Thus, be certain to view it at all angles in various intensities of lighting.
this step can save alot of time, so start here.
the spermathecae are visible in your photo and they are not spherical (round like balls) which also eliminates griseotomentosa.
the spermathecae appear to be long. lateral sacs can be very helpful because they are either scleritized or not scleritized. I cannot see the lateral sacs.
You have removed the ovipositor from the abdomen which makes it difficult to dissect.
You will need to fully extend the ovipositor for a complete view, then photograph the dorsal and ventral sides (tergites and sternites).
I suggest that you use a gentle tool to hold it in place so that you can use fine tweezers to fully extend the ovipositor.
You should do this while it is in a small amount of water to keep it moist. Tease it out but do not pull or you will risk further damage to the ovipositor.
Ovipositors look very similar, so it is important to preserve the ovipositor as it is in the photo. Try not to damage it.
If you have microscissors and a steady hand, then you can cut the ovipositor lengthwise to open it up for a better view.
However, you should photograph it well from both sides before you risk damaging it beyond recognition.
also bear in mind that a few female species are unknown.
I have an appointment with a Doctor, so i must log off now.
Dr. Rognes has alot of material available for free at his website. Most groups are covered. Just search the page for Pollenia to find the publications.
http://www.knut-r...ology.html
at this point, it will be easier to work with the specimen by looking at the color of the palpi.
are the palpi black/dark with a pale tip or orange/yellow?
nota bene: strong lighting can make the dark palpi appear to be yellowish (a sort of transparency). Thus, be certain to view it at all angles in various intensities of lighting.
this step can save alot of time, so start here.
the spermathecae are visible in your photo and they are not spherical (round like balls) which also eliminates griseotomentosa.
the spermathecae appear to be long. lateral sacs can be very helpful because they are either scleritized or not scleritized. I cannot see the lateral sacs.
You have removed the ovipositor from the abdomen which makes it difficult to dissect.
You will need to fully extend the ovipositor for a complete view, then photograph the dorsal and ventral sides (tergites and sternites).
I suggest that you use a gentle tool to hold it in place so that you can use fine tweezers to fully extend the ovipositor.
You should do this while it is in a small amount of water to keep it moist. Tease it out but do not pull or you will risk further damage to the ovipositor.
Ovipositors look very similar, so it is important to preserve the ovipositor as it is in the photo. Try not to damage it.
If you have microscissors and a steady hand, then you can cut the ovipositor lengthwise to open it up for a better view.
However, you should photograph it well from both sides before you risk damaging it beyond recognition.
also bear in mind that a few female species are unknown.
I have an appointment with a Doctor, so i must log off now.