Ligocatinus Rehn, 1901

Gorochov, A. V., 2018, Systematics of the American Katydids (Orthoptera: Tettigoniidae). Communication 8, Proceedings of the Zoological Institute of the Russian Academy of Sciences 322 (4), pp. 398-456 : 440

Genus Ligocatinus Rehn, 1901 , gen. resurr.

Note. This genus was originally described under the homonymic name Amaura Brunner-Wattenwyl, 1878 and contained A. spinata Brunner-Wattenwyl, 1878 and A. punctata Brunner-Wattenwyl, 1878 but without designation of its type species ( Brunner-Wattenwyl 1878). Later, it was renamed into Ligocatinus by Rehn (1901), and A. spinata was designated as a type species of Ligocatinus by Kirby (1905). The second species was recently moved to the genus Zenirella Piza, 1973 by Gorochov (2014). Thus, only one species was left in this genus, but Cadena-Castañeda (2015a) included this species in the former genus Homotoicha and considered Ligocatinus as its junior synonym. However, Ligocatinus is a separate genus more similar or related to Zenirella Piza, 1973 than to Theudoria (and to its subgenus Homotoicha ) by the following characters of male abdominal apex: ninth abdominal tergite is with a pair of distinct posterodorsal lobes having a few apical teeth or tubercles (vs. this tergite lacks posterodorsal lobes and similar to nearest proximal tergites in structure; for comparison see Figs 129, 130, 208, 215, 219, 226, 228, 229); tenth abdominal tergite shorter than previous one but with unpaired posteromedian lobe directed more or less downwards/backwards and located above rather small (normal in shape) epiproct (in Theudoria , this tergite is not shorter than ninth one and without sclerotized posteromedian lobe; see above-mentioned figures); male genital plate is moderately short and with shallow or moderately shallow posteromedian notch (vs. this plate moderately long and with rather narrow and deep or very deep posteromedian notch; see Figs 129, 130, 209, 216, 220, 227). Moreover, Ligocatinus male cercus ( Figs 226, 227, 230 ) lacks distinct rounded concavity bordered by a row of long and dense hairs (such conacavity is characteristic for the Theudoria congeners studied by me; Figs 126–128). Thus, it is reasonable to restore the genus Ligocatinus as a genus close to Zenirella ; inclusion of Zenirella in Ligocatinus as its subgenus also can not be excluded, but their male genitalia are very different: completely membranous in Ligocatinus , and with a pair of large sclerites in Zenirella (Gorochov 2014: fig. 150).

Figures

Figs 223–240. Ligocatinus Rehn and Enthephippion Bruner: 223–230 – L. paraguay sp. nov.; 231–238 – E. borelli (Giglio-Tos); 239 – E. minutum (Rehn); 240 – E. olivaceum (Br.-W.). Head with pronotum from side/above and slightly in front (223, 231); head with pronotum and stridulatory apparatus of left tegmen from above, male (224, 232); stridulatory apparatus of right male tegmen (225, 233); male abdominal apex from above (226, 234) and from below (227, 235); left (228) and right (229) posterior lobes of male last tergite from above and slightly from side/behind; distal part of male right cercus from above (230, 236); ovipositor from side (237, 240); pronotum from side (239). [239 – after Rehn (1921), modified].