Common bilineate Blackhead

distribution

An individual that had been killed and mutilated (Fig. 12) was photographed by Sergio Sotelo at General Artigas (26 ° 57 ’ 06 ’’ S 56 ° 13 ’ 46 ’’ W), Itapúa department on 28 November 2022 and is the first record for that department. It was identified based on the lack of a vertebral line and collar, and presence of broad black flank bands, in combination with white in the labial area (Cacciali 2024). Blackish lateral spots on the ventral scales indicate that the individual belongs to the typical form, and not the form “ barrioi ” (Cabral, de Lema, Renner, 2017). The species is now known to occur in Amambay, Central, Concepción, Guairá, Itapuá and San Pedro departments (Cabral and Weiler, 2014; Cacciali et al., 2016 b; Smith et al., 2016; Cabral et al., 2017). It is considered to be “ Data Deficient ” in Paraguay (Martínez et al., 2020 c), but apparently has a wide distribution in the Oriental region of Paraguay. As members of this genus are known to be difficult to detect, we suspect that the species is easily overlooked rather than rare.

Twenty-eight new and significant departmental reptile records for Paraguay

distribution

Distribution. Known from southeastern South America in Brazil, Paraguay, and eastern Argentina (Plt. 238 A). In Brazil, recorded in the Cerrado and the Atlantic Forest, with marginal records in the Chaco and Pantanal (Plt. 238 A), mostly at intermediate to high elevation (Plt. 238 A). Observed in the field in open savanna and disturbed areas (Sawaya et al., 2008).

Atlas of Brazilian Snakes: Verified Point-Locality Maps to Mitigate the Wallacean Shortfall in a Megadiverse Snake Fauna