Condensella and Endogena, two new genera of the Alebroides genus group (Hemiptera: Cicadellidae: Typhlocybinae) from the Oriental Region with notes on the phylogeny of Empoascini

Abstract

Abstract.Two new microleafhopper genera of Empoascini within the subfamily Typhlocybinae (Hemiptera: Cicadellidae), Condensella Xu, Dietrich & Qin gen. n., based on the type species C. fi lamenta Xu, Dietrich & Qin sp. n., and Endogena Xu, Dietrich & Qin gen. n., based on the type species E. fl ava Xu, Dietrich & Qin sp. n., are described from southern China and Thailand. Male habitus photos and illustrations of male genitalia of the two new species are provided. Comparative notes on related genera are provided. Phylogenetic relationships and the status of genus groups within the tribe are also discussed.

Phylogeny of the tribe Empoascini (Hemiptera: Cicadellidae: Typhlocybinae) based on morphological characteristics, with reclassification of the Empoasca generic group

“…Although they did not perform a phylogenetic analysis, Xu et al . (2017b) suggested that the Ficiana and Usharia generic groups are monophyletic because they share unique diagnostic morphological characters. In contrast, they suggested that the Alebroides group is not monophyletic because it lacks such characters.…”

“…Empoascini is the second largest tribe of Typhlocybinae, currently comprising about 1373 valid species in 83 extant genera (Southern & Dietrich, 2010; Xu et al ., 2017a, 2017b; Dmitriev & Dietrich, 2019). Members of the tribe (Fig.…”

“…(2014) and Xu et al . (2017b) adopted the classification of Typhlocybinae by Ahmed (1983) and Dietrich (2013a), which recognizes five tribes in the subfamily and distinguishes Empoascini from other Typhlocybinae by the absence of an appendix on the forewing, and the presence of a hind wing submarginal vein apically between the jugal lobe and MP or RM but not extended around the wing apex along the costal margin. Other diagnostic traits include the presence of well‐developed ocelli, the characteristically curved distal segment of forewing vein MCu, presence of a longitudinal row or band of numerous macrosetae on the male subgenital plate, and absence of a well‐developed preapical lobe on the style (Qin et al ., 2014; Xu et al ., 2017b).…”

“…Within Empoascini, four informal generic groups have been recognized to date, i.e. the Alebroides group and the Empoasca group which comprises the Ficiana and Usharia subgroups (Xu et al ., 2017b). The status and relationships of these groups, defined based on characters of the hind wing venation and male genitalia, have not been examined using phylogenetic methods.…”