Revision of the South American Genus Brachysternus Guérin-Méneville (Coleoptera: Scarabaeidae: Rutelinae: Anoplognathini: Brachysternina)
Abstract
The southern South American genus Brachysternus Guérin-Méneville is revised
and now includes seven species: B. angustus (Philippi and Philippi), B. germaini
(Ohaus) new combination, B. marginatus Germain, B. olivaceus Philippi and Philippi,
B. patagoniensis Jameson and Smith new species, B. prasinus Guérin-Méneville,
and B. spectabilis Erichson. The following species names are new synonyms
of B. prasinus: B. vicinus Guérin-Méneville, B. sinuatifrons Germain, B. pubescens
Germain, B. viridis Germain, B. dilatatus Germain, B. viridipes Ohaus, and B. hirtus
Ohaus. The following species names are new synonyms of B. olivaceus: B. chloris
Philippi and Philippi, B. riverae Germain, B. herbaceus Germain, and B. araucanicus
Ohaus. The following names were incorrect: ‘‘B. viridis Guérin-Méneville’’ (lapsus
calami), ‘‘B. viridis Laporte’’ (lapsus calami), ‘‘B. viridis Solier’’ (incorrect author),
and ‘‘B. fulvescens Germain’’ (misapplication). Lectotypes are designated for the
following names: B. araucanicus Ohaus, B. chloris Philippi and Philippi, B. dilitatus
Germain, B. fulvipes Guérin-Méneville, B. hirtus Ohaus, B. marginatus Germain, B.
obscurus Philippi and Philippi, B. olivaceus Philippi and Philippi, B. philippii Germain,
B. pubescens Germain, B. riverae Germain, B. spectabilis Erichson, B. vicinus
Guérin-Méneville, B. viridipes Ohaus, and B. viridis Germain. Neotypes are designated
for B. germaini (Ohaus) and B. prasinus Guérin-Méneville. Keys to adults,
diagnostic characters, descriptions, and distributions are presented.