Abstract
AbstractNew-world leafhoppers with strongly flattened heads are here assigned to three tribes: Deltocephalini (six genera), Dorycephalini (two genera), and Hecalini (seven genera). Revised keys are presented to the new-world genera, and 44 new-world species of the Nearctic generaAttenuipygaOman (Dorycephalini) andNeohecalusLinnavuori, the Holarctic generaHecalusStål andMemnoniaBall, and the widespread new-world genusSpangbergiellaSignoret (Hecalini). In Dorycephalini,Attenuipyga(with subgenusDorycaraEmeljanov,stat.nov.) has nine species, includingAttenuipyga(s.s.)joyceaesp.nov. from Manitoba andDorycephalus sinuatusBeamer, 1942b=Dorycephalus minorOsborn, 1920,syn.nov. In Hecalini, 10 species inHecalus, 3 inNeohecalus, and 15 inMemnoniaare recognized, including 20 species formerly inParabolocratusFieber, plusHecalus finnamoreisp.nov.,Neohecalus magnificussp.nov.,Memnonia anthalopussp.nov.,Memnonia maiasp.nov., andMemnonia panzerisp.nov. from the northern prairies andMemnonia leptaleasp.nov. from the Gulf states.Parabolocratus continuusDeLong, 1938 andParabolocratus planusShaw, 1932 are reduced to subspecific status inHecalus montanus, and three names are synonymized:Parabolocratus inflatusDeLong, 1938 =Hecalus montanus(Ball, 1900);Parabolocratus rotundusDeLong, 1938 =Hecalus major(Osborn, 1915); andParabolocratus elongatusDeLong, 1938 =Memnonia grandis(Shaw, 1932)syn.nov.
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