A new species of Conocephalus (Orthoptera: Tettigoniidae: Conocephalinae) from Argentina with extraordinarily broad-band ultrasound calling song Author Rubio, Lucas Facultad de Ciencias Exactas y Naturales, Av. Int. Cantilo, Buenos Aires, Argentina. Author Braun, Holger División Entomología, Museo de La Plata, Universidad Nacional de La Plata, Paseo del Bosque s / N °, 1900 La Plata, Argentina. text Zootaxa 2024 2024-04-11 5437 1 115 120 http://dx.doi.org/10.11646/zootaxa.5437.1.7 journal article 10.11646/zootaxa.5437.1.7 1175-5326 10959498 640B8D0A-880B-447D-87E0-0610003DCC90 Conocephalus ( Xenocerculus ) subgen. nov. Etymology. Derived from Greek ξενικός, strange, referring to the unusual male cerci, very different compared to species of other subgenera of Conocephalus , the diminutive alluding to the small body size. Gender is masculine. Diagnosis. Smaller than most South American Conocephalus species. The strongly reduced wings leave the entire abdomen exposed. Fastigium very narrow, prosternum with a pair of delicate spines, and tip of hind tibia without internal dorsal spine. Male cerci slender, with a very long internal transversal spine at the tip, male subgenital plate simple with short styli. Ovipositor long and straight. Type . C . ( X .) tuyu sp. nov.