Is there any report of two pairs of adanal setae (paraanal) in Holostaspella genus (Macrochelidae)?
Dear Sayed,
I'm not aware of a duplication of the paranal setae in Holostaspella, or any other Mesostigmata for that matter. They are usually very stable setae as they appear in the larva of mesostigmatan mites. Another possibility is that one of the Jv setae have moved close to the paranals. A sketch would help others judge this; alternatively, an expert on Macrochelidae would be a good person to ask about how unique the character state is and its significance. That's likely the best approach.
You will also need multiple specimens showing the feature. If it's just one specimen then it could just be an odd individual rather than a morphological feature indicative of a new species.
Kind regards, Owen.
Hello Dear
This paper maybe helpful
The oribatid mite genusPapillocepheus (Acari, Oribatida, Tetracondylidae), with description of a new species from southern Vietnam
Sergey G. Ermilov, Alexander E. Anichkin, and Andrei V. Tolstikov
Dear Sayed,
I'm not aware of a duplication of the paranal setae in Holostaspella, or any other Mesostigmata for that matter. They are usually very stable setae as they appear in the larva of mesostigmatan mites. Another possibility is that one of the Jv setae have moved close to the paranals. A sketch would help others judge this; alternatively, an expert on Macrochelidae would be a good person to ask about how unique the character state is and its significance. That's likely the best approach.
You will also need multiple specimens showing the feature. If it's just one specimen then it could just be an odd individual rather than a morphological feature indicative of a new species.
Kind regards, Owen.
Do you have multiple specimens with this condition, or only one? There are several situations that can occur to give the illusion of double structures.
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