Blackish Burrowing,

Snake Phalotris nigrilatus Ferrarezzi, 1993

A recently dead individual photographed (Fig. 18) by JM in the district of San José Obrero, near Loreto, Concepción department (23°11’18.7”S 57°22’49.3”W) on 25 January 2024 is the first record of this rare Paraguayan endemic species outside of San Pedro department (Cacciali et al., 2016 b, Cacciali, Mee, Plettenberg Laing, Krause, McLaughlin et al., 2020). No other Paraguayan Phalotris shows such extensive black colouration on the head, dorsum and ventrum (Cacciali 2024). It extends the distribution of the species 120.6 km to the north of the closest known locality Estancia Karumbe, San Pedro department. The species is considered to be “Endangered” in Paraguay (Martínez et al., 2020c).