HI Kevin, Find those myself very often ... last time few days ago on taurus or illyricus (have to look in the box to see exactly on what species). I think is just dung that stick and try on them ... I found that specially when out "hunting" and after some rainy days. If you want I can do a photo of the specimen. All my best, Cosmin _______________________________________________________ Cosmin-Ovidiu Manci biologist & photographer ********************** http://cosmln.nature4stock.com - cosmln's place http://dragonfly.nature4stock.com - Dragonflies of Romania http://insects.nature4stock.com - Insects https://www.kladia.info/mynos/ - a romanian flora & fauna database and not only ********************** DSLR Collecting Saves Lives! ********************** " Only after the last tree has been cut down, only after the last river has been poisoned, only after the last fish has been caught, only then will you find that money can not be eaten. " an old indian saying -------------------------------------------- On Wed, 10/11/17, Floate, Kevin <[log in to unmask]> wrote: Subject: Query RE: mysterious yellow spots on Onthophagus taurus To: [log in to unmask] Date: Wednesday, October 11, 2017, 10:13 PM Hi All: My colleague, Wes Watson, has a project with Onthophagus taurus. A number of the adult beetles he’s recovering are speckled with yellow spots. Closer examination reveals what appears to be yeast(?) in the spots. Have others made a similar observations on beetles? Photos are attached. Any clue as to what these are? If you can help Wes out, I know he would appreciate it. Please contact Wes directly at [log in to unmask] Thanks, Kevin Kevin Floate, Research Scientist Insect Biocontrol | Lutte biologique aux insectes Lethbridge Research Centre | Centre de recherches de Lethbridge Agriculture and Agri-Food Canada | Agriculture et Agroalimentaire Canada 5403 - 1st Avenue South, P.O. Box 3000 | 5403 - 1ère Avenue Sud, C.P. 3000 Lethbridge, Alberta, CANADA T1J 4B1 Email | Adresse courriel: [log in to unmask] Telephone | Téléphone: 403-317-2242 Facsimile | Télécopieur: 403-382-3156 Teletypewriter | Téléimprimeur: 613-773-2600 Government of Canada | Gouvernement du Canada http://sites.google.com/site/dungins/homepage Dr. Kevin Floate, Editor-in-Chief The Canadian Entomologist