Notes on some Neotropical Deltocephalinae (Hemiptera: Cicadellidae) described by Herbert Osborn and a review of Caphodus

Abstract

Several Neotropical species of Deltocephalinae described by Herbert Osborn that have until now remained of uncertain identity or were incompletely or not at all described and illustrated in the literature are reviewed and illustrated here, along with some related taxa. Several of these species, some represented by type specimens, were found in an unreturned loan of leafhopper specimens at the US National Museum of Natural History that belongs to the Carnegie Museum of Natural History. The male genitalia of Caphodus obliquus (Osborn, 1923) are described and illustrated for the first time, all three species of the genus are illustrated and reviewed, and a key to males and females is provided. The female type specimen of Eutettix dentatus Osborn, 1923, known as a junior synonym of Atanus coronatus (Berg, 1879), is illustrated. The male genitalia of the holotype of Atanus dorsalis (Gillette, 1898) are described and illustrated for the first time, and the correct placement of the species in Atanus Oman, 1938 is confirmed. Eutettix mimicus Osborn, 1924, previously of uncertain placement to genus, is considered a new synonym of Atanus lobatus (Osborn, 1923); the habitus and male genitalia of the types of E. mimicus and Thamnotettix lobatus Osborn, 1923 are illustrated. The female holotype of Atanus tesselatus (Osborn, 1923) is illustrated. A male paratype of Bolarga boliviana (Osborn, 1923) is illustrated. Bolarga nigriloba Linnavuori, 1959, combination reinstated, is reinstated in its original genus from its previous placement in Daltonia Oman, 1949 and is illustrated. The paratype and only known male specimen of Cruziella bifasciata (Osborn, 1923), new combination (transferred from Cumora Oman, 1938) is illustrated for the first time and compared to the type species of the genus, Cruziella trispinosa Linnavuori & DeLong, 1979.