Lacetas, Karsch, 1890

Sanborn, Allen F., Marshall, David C., Moulds, Maxwell S., Puissant, Stéphane & Simon, Chris, 2020, Redefinition of the cicada tribe Hemidictyini Distant, 1905, status of the tribe Iruanini Boulard, 1993 rev. stat., and the establishment of Hovanini n. tribe and Sapantangini n. tribe (Hemiptera: Cicadidae), Zootaxa 4747 (1), pp. 133-155 : 147-148

The Classification of Lacetas , Iruana and Related African Genera

In the genetic tree ( Fig. 4 ), Lacetas was well separated from Hemidictya and fell closer to Tettigomyia Amyot & Audinet-Serville, 1843 , the type genus of subfamily Tettigomyinae. This association is confirmed by our character tabulation ( Table 3 ), which shows no clear conflict with the characters of that subfamily, and we thereby remove Lacetas (and consequently also Lacetasini ) from synonymy with Hemidictyini and place it in subfamily Tettigomyiinae as currently classified.

Ruschel & Campos (2019) found that the African genus Iruana grouped with Lacetas and Hemidictya in their tree and that the African genera Bafutalna Boulard, 1993 and Murphyalna Boulard, 2012 were closely allied based on morphology, so these genera were also moved to Hemidictyini in their list of included genera. The date priority of Hemidictyini led them to synonymize Lacetasini with Hemidictyini , an action that we have reversed above. Hemidictya possesses character states associated more with the Tibicininae as outlined above, while all of the African genera possess a non-retractable uncus, partially fused CuP and 1A in the forewing, and hind wing RP and M veins fused at the base, distinguishing them as members of the Tettigomyiinae ( Marshall et al. 2018) . These morphological characters support the close association of Iruana , Bafutalna , and Murphyalna with Lacetasini ( Ruschel & Campos 2019, Figs. 11–12) and not with Hemidictya .

Figures

FIGURE 4. Molecular systematic position of Hemidictya frondosa as a deep lineage belonging to the subfamily Tibicininae and unrelated to Lacetas (Tettigomyiinae), as indicated by maximum-likelihood analysis of the Cicadidae genetic dataset from Marshall et al. (2018) with Hemidictya and Derotettix mendosensis added (the latter from Simon et al., 2019). Current subfamilies and tribes are shown. Bootstrap supports from 200 pseudoreplicates are given for nodes with> 50% support. No supported differences from the 2018 tree were observed for the collapsed clades containing the remaining two subfamilies. Selymbria madredediosensis Sanborn, 2019 was identified as S. stigmatica in Marshall et al. (2018). Taxon authorships and specimen data for species not mentioned in the text here are found in Marshall et al. (2018).