Annotated checklist of the amphibians and reptiles of the Santander highland, Colombia Author Pérez-Rojas, Diego A. Author Escamilla-Quitián, Diego Author Estupiñan-Tibaduiza, María Fernanda Author Carvajal‑Cogollo, Juan E. text Check List 2020 2020-05-22 16 3 611 620 http://dx.doi.org/10.15560/16.3.611 journal article 10.15560/16.3.611 1809-127X 5394085 Atractus marthae Meneses-Pelayo & Passos, 2019 Materials examined. COLOMBIA • 1 adult ♂ ; Santan- der, municipality of Sucre , La Pradera , Fontibón ; 05° 51ʹ53″N , 073°54ʹ37″, 2574 m a.s.l. ; 03 Feb. 2018 ; María Estupiñan leg.; UPTC­R 0594 • 3 adults ♀ ; Santander , municipality of Sucre , La Pradera , Colegio ; 05°52ʹ05″N , 073°54ʹ15″W , 2574 m a.s.l. ; 23 Jun. 2017 ; Juan Carva- jal leg.; UPTC-R 0591 to UPTC-R 0592 , UPTC-R 0602 . Identification . Atractus marthae was identified by: dor- sal scale rows 17/17/17, smooth; postoculars two, loreal long, temporals 1 or 2; and hemipenis moderately bilobed, with lobe size equivalent to the capitulum length, semicapitated and semicalyculated ( Meneses-Pelayo and Passos 2019 ). Remarks. This species occurred in the grassland habitat, where it was found under rocks ( Fig. 9D ). No individuals were detected in other habitats ( Fig. 2C ), which would make their detection difficult. We observed much variation in color intrapopulation, with the ground color blackish ( Fig. 9A, B ) to reddish with dark longitudinal lines ( Fig. 9C ). In February 2018 , we observed eggs and hatchlings under a fallen tree trunk, which is the first ob- servation of reproduction for this species.