First record of Amphisbaena anomala (Squamata: Amphisbaenidae) in lowland Caatinga based on citizen science,with an updated distribution map

Amphisbaena anomala is a species of worm lizard endemic to Brazil, with most known records in eastern Amazonia, but also occurring in northern Cerrado and at highland moist forest enclaves in Caatinga. Based on citizen science data, we report a new easternmost and southernmost locality for A. anomala, representing its first record in the lowlands of the Caatinga ecoregion. The new record, in Abaiara, Ceará, Brazil is 335 km southeast from the nearest previously documented occurrence of the species. We conducted a comprehensive literature review, updating the species known distribution map with three times more records than the last update, and describing the soil types and ecoregions where the species is typically found. The new record reinforces the crucial role of taxonomists in the identification of species in citizen science platforms, assisting in narrowing existing gaps in biogeographic knowledge. Furthermore, we draw attention to the lack of specimen collection in some environmental impact assessments, from which some photos on citizen science platforms come.