2 males (images 1-5 with genitalia) and 1 female (6-7)

Labels:

Balzapamba / [Ecuador] / R. Haensch S.

donum Ch. Dupuis, Bruxelles, 1913

"Cyclocephala atricapilla Mannh."

Nonetheless, this species is not present in the check-list of Ecuadorian Dynastinae (http://museum.unl.edu/research/entomology/Ecuador-Survey/species.html)

Thank you in advance for your attention.

P.S. Might it be C. castanea?

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