Revision of Trachyderines Related to <i>Sphaenothecus</i> from North America with Description of Three New Genera, and New Species of <i>Lophalia</i> Casey, 1912, <i>Mannophorus</i> LeConte, 1854, and <i>Ischnocnemis</i> Thomson, 1864 (Coleoptera: Cerambycidae: Cerambycinae: Trachyderini)

The genera Lophalia Casey, 1912, Mannophorus LeConte, 1854 and Ischnocnemis Thomas, 1864 (Coleoptera: Cerambycidae: Cerambycinae: Trachyderini) are recharacterized by providing additional morphological features to enhance the delineation of these genera. Two species, Lophalia cribricollis Bates, 1892 and Ischnocnemis luteicollis (Bates, 1885), are transferred to a new genus Lophaliamorpha Eya with Lophaliamorpha luteicollis (Bates) new combination as the type species. Ischnocnemis skillmani Chemsak and Hovore, 2010 is transferred to a new genus Paramannophorus Eya with Paramannophorus skillmani (Chemsak and Hovore) new combination as the type species. A new genus Microteroschema is created to accommodate two additional species from Mexico: Microteroschema parvum Eya new species (Oaxaca and Chiapas) and Microteroschema pseudolaetum Eya new species (Chiapas) with M. parvum as the type species. Additional new species from Mexico include: Lophalia nigricollis Eya new species (Morelos and Michoacán), Mannophorus tricostatus Eya new species (Chiapas), Ischnocnemis edmundi Eya new species (Chiapas), and Ischnocnemis brevis Eya new species (Michoacán and Guerrero). Other new combinations include: three species previously included in Neotaranomis Chemsak and Linsley, 1982 (N. australis, Chemsak and Linsley, 1982, N. sinaloae Chemsak and Linsley, 1982 and N. atropurpurea Chemsak and Noguera, 2001) are transferred to Cyphosterna Chevrolat, 1862; Lophalia auricomis Chemsak and Linsley, 1979 is transferred to Zalophia Casey, 1912; and two species, Chemsakiella virgulata (Chemsak, 1987) and Ischnocnemis minor Bates, 1880 are transferred to Mannophorus LeConte, 1854. Furthermore, Ischnocnemis virescens Eya, 2010 is also transferred to Mannophorus as a new combination and new subspecies of Mannophorus virgulata (Chemsak). New synonymies include two species previously in Ischnocnemis, i.e., I. cribellatus (Bates, 1892), and I. cyaneus Bates, 1892 synonymized with Mannophorus laetus LeConte, 1854 and I. caerulescens Bates, 1885, respectively. A key to Sphaenothecus-like trachyderines, which includes all the above-mentioned genera, and keys to species of Lophalia, Lophaliamorpha, Mannophorus, Ischnocnemis, Microteroschema, and Cyphosterna are provided. Illustrations of the available species in color are included. Erratum Throughout this manuscript, a species name was misspelled as Mannophorus virgulata (Chemsak), and there was not enough time to correct the spelling errors prior to publication. The correct spelling for this species is Mannophorus virgulatus (Chemsak), new combination, and its subspecies is Mannophorus virgulatus virescens (Eya), new combination and new synonymy, and should be referred to as such in future publications.