Author Topic: Haemogamasus nidi?  (Read 6749 times)

Offline Ari Kainelainen

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Haemogamasus nidi?
« on: August 03, 2011, 10:18:18 PM »
Hallo!
I see, these mites are popular in my region. It could be found under moss or failed trunks of trees. Is t female?



Offline Roy E. Wraanes

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Re: Haemogamasus nidi?
« Reply #1 on: January 29, 2012, 01:57:52 AM »
Yes, you might be right about both species and gender  :)
« Last Edit: January 30, 2012, 12:38:50 AM by Roy E. Wraanes »
"The soil is the poor man's rainforest"


Offline Ari Kainelainen

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Re: Haemogamasus nidi?
« Reply #2 on: January 29, 2012, 03:23:03 PM »
Hallo!
Now, I think, it is other genus.
Just there are not a good images, and not all details are visible. It could be Pergamasus sp., probably from Pergamasus subgenus (I'm don't know about modern opinions about subgenuses of this genus). Unfortunately I haven't papers or ID-books to Id them completely.
See below:
1.dorsal
2.tectum
3.genitails
If I will have free time I will take more good photos soon with it, but I hope that the main details are visible. For example, it haven't so much hairs, like Haemogamasus.



Offline Roy E. Wraanes

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Re: Haemogamasus nidi?
« Reply #3 on: January 30, 2012, 12:37:50 AM »
Actually this is more interesting than I thought when seeing your new photos. Here you can really see the large metasternal shields and the acuminate epigynal shield. So it should be some mite from the Parasitidae. Pergamasus is a VERY difficult group... I have a contact in Sweden that should be able to have a look at these photos. But yes, I may be open for that it could be a Pergamasus. Although females can be a bit tricky  :) Nice males with swollen II legs and different shapes (like the apophysis) are sometimes more "easy" to distinguish. It's great that you still have the specimens, since in the last case we can send them to a specialist on that group  ;)
"The soil is the poor man's rainforest"


Offline Ari Kainelainen

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Re: Haemogamasus nidi?
« Reply #4 on: January 30, 2012, 03:53:11 PM »
Hallo!
I know about difficulties with Pergamasus, even the keys for this genus absent in my ID-book.
I have a lot samples, and around 15 preparates with similar mites, but unfortunately I don't know date of finding for many samples (I had not bank for each sample, so I placed it in one). I will try to caught them this summer and preparating with dates for collection.
Almost all are females. I think that it is a three species (I could posting them in different topics).
I think one of it, in this topic, are very variable. There are interesting differences with form of tectum and genitails. It is the most popular among my samples as well  :).
I took photos with this sample today, I hope, it could help: