The new species Oiovelia shepardi is described based on macropterous specimens from the departments of La Guajira and Antioquia in northwestern Colombia, and is compared to its presumed closest relative. The female of Paravelia cunhai Rodrigues & Moreira, 2016 and the male of P. polhemusi Rodrigues, Moreira, Nieser, Chen & Melo, 2014 are described for the first time. The specimens of the two species of Paravelia Breddin were collected in waters inside caves in the State of Pará, northern Brazil. Further, the micropterous form of Steinovelia vinnula (Drake, 1951) is described, compared with S. virgata (White, 1879), and new distributional records are provided. Illustrations and a geographic distribution map of all species treated here are presented.
The predominantly Neotropical tribe Cryphocricini (Naucoridae: Cryphocricinae) comprises two described genera. Of these, the nominate genus, Cryphocricos (Signoret 1850), is widely distributed from Argentina north to Texas, and is represented by 14 described species (La Rivers 1971, 1974, 1976). This genus uses plastral ventilation (Parsons & Hewson 1974) and, thus, has drawn interest and been the subject of several associated studies of morphology and biology (Parsons 1974, Sites 1990, Sites & Nichols 1993, Lopez-Ruf et al. 2000).
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