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]
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