Systematic notes on several Tessaratominae genera described by Arnold Lucien Montandon (Heteroptera, Tessaratomidae)

After studying photographs of the type specimens of two tessarratomid species described by Montandon (Anacanthopus flavolimbatus Montandon, 1894, and Notopomus isidorei Montandon, 1894), it is apparent that the genus Anacanthopus Montandon, 1894, is a junior subjective synonym of Mattiphus Amyot & Serville, 1843. This results in the new combination Mattiphus flavolimbatus (Montandon, 1894), n. comb. Additionally, a comparison between the two genera Notopomus Montandon, 1894, and Siphnus Stål, 1863, indicates that Notopomus should be downgraded to a subgenus of the latter. Consequently, Notopomini Horváth, 1900, becomes a junior synonym of Tessaratomina Stål, 1863.