Forum Entomologi Italiani

genere: Polyphylla
letteratura: https://www.uschovna.cz/zasilka/PN7W7EM ... 7CGMGFWWKV

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

Giuseppe

quanto sono belle

La P. maroccana e la P. alba sono veramente belle
Veramente complimenti per le foto

Ho ricevuto il pacchetto oggi , con una nuova specie Polyphylla (Granida) vietnamica Kobayashi & Fujioka, 2016

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

most likely you are correct, but I suggest to check for safe id from P. simoni kontumensis, that can be syntopic and may have also have a striped pattern (although generally not so regular).
I treated this topic with Prokofiev in the attached paper.

most likely you are correct, but I suggest to check for safe id from P. simoni kontumensis, that can be syntopic and may have also have a striped pattern (although generally not so regular).
I treated this topic with Prokofiev in the attached paper.



Thank you Marco.This weekend I will prepare this piece, take a picture and put it on the forum.I hope the determination will be fine.

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

I suspect the supposed turkmenoglui is better identified as olivieri, but it's difficult to say.
Unfortunately, I could examine only few specimens of turkmenoglui that can be safely identified as such based the supposed typical appearance of this species, with a lot of white scales (see photo below, from De Wailly Ph., 1997. Revision des especes paléarctiques du genre Polyphylla Harris (Coleoptera Melolonthidae) (3ème partie). Lambillionea. 97: 485-502) and I have none



Aside from this putative diagnostic white cover, its identity is made unclear also by not-so-clear relationship between the two most close species, fullo and olivieri. Baraud, discussed the identity of P. turkmenoglui in a dedicated paper, where he said that "fullo" and "olivieri" merge one into the other, and that they could not be considered distinct (Baraud J, 1980. Polyphylla fullo ssp. Turkmenoglui Petr: une bonne espèces!. Turk. Bit. Kor. Derg.. 4(1): 3-6)
However, later (European Fauna, 1992) he treat them as separate species without comments.

Here as a separate species
http://www.virtual-beetle.com/polyphylla.html

and here too

Löbl I. et Löbl D., 2016 - Catalogue of Palaearctic Coleoptera. Volume 3. Scarabaeoidea, Scirtoidea, Dascilloidea, Buprestoidea and Byrrhoidea. Revised and Updated Edition

original description:
Petrovitz R. 1965: Drei neue palaearktische Melolonthinae. Reichenbachia 5: 191–195.

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

Sure, everywhere they are considered separate species.
But when it comes to state which are the diagnostic charactyers things are not so straightforward.
Coming back to your specimen, why do you think P. turkmenoglui rather than P. olivieri?

It is not my determination, so marked.

I'm not sure the determination but the average size of P.olivieri pieces in my collection 35-41 mm. Piece "turkmenoglui" 28 mm. ,and the different shape of the aedeagus.

I'm not sure, but I think the original description as:
Polyphylla fullo subsp. turkmenoglui Petrovitz, 1965

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

P. turkmenoglui - P. olivieri

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Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

Petrovitz R. 1965: Drei neue palaearktische Melolonthinae. Reichenbachia 5: 191–195.

_________________
Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

_________________
Research Fields
Taxonomy, ecology, biomonitoring , faunistic of Staphylinidae

Hi Jan, according to De Wailly (1992) P. olivieri can be as short as 29 mm, so I think 28 mm size is not relevant for identification purpose.
You say paramera are different from olivieri, this is surely important... but I can't see them.
For sure, scale cover does not fit appearance so far recognised as typical of P. turkmenoglui, and I have noi idea why it was identified as such.
I also note that basal angle of pronotum is also very rounded, not sinuated (compare it to other specimen). Difference is conspicuous, but there is a certain degree of variability in Polyphylla.

To sum up, I (we all?) don't know enough about variability of turkmenoglui populations other than the typical one to give a sound opinion.
I also own a small specimen from w-Turkey of uncertain identification... I shall re-check it.

Finally, note that turkmenoglui was described on a long series from Menemen, then recorded from Aydin, both near Izmir. The fauna of Izmir is rather different from that of Antalya.