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Now I'm very interested in learning what these "plaques" are, as shown
in DSCN3724.  I've observed them on numerous genera of Scarabaeine dung
beetles from the Neotropics and elsewhere. At an Ent. Soc. of America
symposium on Insect-Fungus relationships some 20+ years ago, the speaker
showed images of very similar structures on the pronota and elytra of
beetles and said they were Laboulbeniales.  If these are not labouls,
then perhaps they are another group of fungi. 

Bruce 

On 2017-10-12 17:06, Mikhail F. Bagaturov wrote:

> Than it shall be an integument defects.
> 
> All the best, Mik
> 
>> Четверг, 12 октября 2017, 23:41 +03:00 от Alberto Ballerio <[log in to unmask]>:
>> 
>> I sent the photo of the Onthophagus taurus 
>> specimen to Prof. Walter Rossi, an authority on 
>> Laboulbeniales and he told me that the mistery 
>> spots do not belong to the order Laboulbeniales.
>> Best regards,
>> Alberto
>> 
>> At 18:08 12/10/2017, you wrote:
>>> These look very typical Laboulbeniales. Some of 
>>> the other blotches look less distinctive! Best wishes, Robert.
>>> 
>>> From: Scarab Beetle Taxonomy Discussion List 
>>> [mailto:[log in to unmask]] On Behalf Of Angel Solis
>>> Sent: 12 October 2017 16:45
>>> To: [log in to unmask] [1]
>>> Subject: Re: Query RE: mysterious yellow spots on Onthophagus taurus
>>> 
>>> Hola:
>>> 
>>> I have seen here in Costa Rica many cases like 
>>> the one Kevin shows in his photo, we also have 
>>> clear cases of Laboulbeniomycetes like those 
>>> shown in my photo on a Dichotomius centralis. 
>>> However the ones in Kevin's photo look different from those in my photo:
>>> 
>>> Saludos
>>> Ángel Solís
>>> 
>>> 
>>> 
>>> 
>> 
>> ****************************************************************
>> 
>> Dr. Alberto Ballerio
>> Viale Venezia 45
>> I-25123 Brescia
>> ITALY
>> tel.:0039-030364183
>> fax.:0039-030224923
>> e-mail: [log in to unmask] [2]
>> http://museum.unl.edu/research/entomology/workers/ABallerio.htm
>> 
>> ****************************************************************
> 
> =====
> All the best, Dr. Mikhail F. Bagaturov
> 
> IUCN/SSC Amphibian SG and Conservation Planning SG, 
> Academic Member of Athens Institute For Education & Research (http://atiner.gr)
> 
> Author of Theraphosids of the World: http://tarantulas.tropica.ru
 

Links:
------
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[2] https://e.mail.ru/mailto:[log in to unmask]