Abstract
The Brazilian sharpshooter Tettigonia incarnata Germar, 1821 was treated as incertae sedis in the most comprehensive and recent monograph of the New World Cicadellini. We have been able to identify male and female specimens of Tettigonia incarnata from northeastern and southeastern Brazil using high-resolution images of two syntypes deposited in the Museum für Naturkunde, Universität Humboldt, Berlin. Here we transfer Tettigonia incarnata to the genus Kogigonalia Young, 1977 and provide a detailed redescription of this species, including information on intraspecific color variation. In addition, we provide an updated key to the species of Kogigonalia. This is the first record of the genus from Brazil. Kogigonalia incarnata comb. n. can be recognized, among other features, by the subgenital plates with a distinct emargination at outer margin, aedeagus with a ventral unpaired process near midlength of shaft, and female sternite VII bearing an elongate strong projection on posterior margin.
Highlights
Six species were included by Young (1977) in the South American sharpshooter genus Kogigonalia Young, 1977 (McKamey 2007, Wilson et al 2009): K. cajana Young, 1977 (Peru), K. dietzi Young, 1977 (Venezuela; type species), K. enola Young, 1977 (French Guiana), K. resoluta (Melichar, 1926) (Peru), K. spectabilis (Melichar, 1932) (Colombia, Peru), and K. zarumoidea Young, 1977 (Colombia)
Kogigonalia can be distinguished from these three genera, as well as from other Cicadellini, by the following combination of features: crown with anterior margin broadly rounded; thorax with pronotal width greater than transocular width of head, lateral margins of pronotum convergent anteriorly; male pygofer well produced posteriorly, without a dorsal lobe; subgenital plates usually not extending posteriorly as far as pygofer apex; styles usually without a lateral lobe; paraphyses, when present, long-stalked and with a pair of narrowly separated divergent rami; female abdominal sternite VII with a pair of elongate lateral processes or projections
K. incarnata shows a great deal of intraspecific color variation; the orange or yellow forewing areas vary from distinct to faint or even absent (Fig. 3a–c); the dark marks of crown and pronotum are variable, even between the syntype specimens from the state of Bahia, northeastern Brazil (Fig. 3a–b)
Summary
Six species were included by Young (1977) in the South American sharpshooter genus Kogigonalia Young, 1977 (McKamey 2007, Wilson et al 2009): K. cajana Young, 1977 (Peru), K. dietzi Young, 1977 (Venezuela; type species), K. enola Young, 1977 (French Guiana), K. resoluta (Melichar, 1926) (Peru), K. spectabilis (Melichar, 1932) (Colombia, Peru), and K. zarumoidea Young, 1977 (Colombia). Young (1977: 82) included Kogigonalia in his Dilobopterus generic group, a diverse assemblage of 27 genera. Tettigonia incarnata was described by Germar (1821) based on material from Brazil (“habitat in Brasilia”). In his monograph of the New World Cicadellini, Young (1977: 1105) treated T. incarnata as incertae sedis because he was not able to examine specimens of this species. We transfer T. incarnata to the genus Kogigonalia and provide a detailed redescription of this species, including information on intraspecific color variation. We provide an updated key to the species of the genus. This is the first record of the genus Kogigonalia from Brazil
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