Abstract:
Macrobaris Champion is synonymized with Iops Casey (new synonym), transferred
from Baridini: Baridina to Apostasimerini: Madopterina (new placement), and revised.
Twenty one species are documented from fourteen countries, ranging from the USA in
the north to Paraguay in the south. Thirteen new species are described: M. acutipennis
new species (Mexico), M. aquilonia new species (USA), M. balicosa new species
(Guyana, Suriname, Venezuela), M. colemycter new species (Mexico), M. exerens new
species (Venezuela), M. laciniosa new species (Mexico), M. lateriquetra new species
(Costa Rica, Panama), M. leptochele new species (Peru), M. runa new species (Panama,
Peru), M. spinigera new species (Brazil, Venezuela), M. stictica new species
(Ecuador, Peru), M. unguiculus new species (Ecuador), and M. zacatensis new species
(Costa Rica). Iops bicolor Hustache is excluded from the genus and transferred to Madopterina
incertae sedis (new placement). Five species were collected from Poaceae,
four of them from bamboos. A dichotomous key for the identification of currently
known species is provided, with M. sparsa Casey treated as a morphologically unresolved
complex. Limnobaris rufula Champion is transferred to Valdenus Casey, as
V. rufulus new combination, and is reported from Costa Rica for the first time.
