All the species of snakes are carnivorous, and most of them are generalists regarding the prey (^{Martins et al. 2002}). Ophiophagy, when a species feeds on snakes, is not a rare feeding habit in snakes; such is the case of the mussuranas (Clelia spp.) and the king cobra (Ophiophagus hannah Cantor, 1836) (^{Marques et al. 2016}).

Bothrops moojeni Hoge, 1966 is a nocturnal, large pit viper distributed in central and southeastern Brazil, throughout riparian forests and adjacent open areas in the Cerrado morphoclimatic domain (^{Campbell and Lamar 2004}). Its diet is composed mainly by mammals, frogs, and lizards (^{Nogueira et al. 2003}). ^{Nogueira et al. (2003)} also recorded snakes on the B. moojeni diet; however, the authors did not specify the identity of the preyed species. Here, we report the first case of predation of Bothrops moojeni upon two individuals of Amerotyphlops brongersmianus (Vanzolini, 1976), a fossorial snake widely distributed in South America, inhabiting various habitats (^{Dixon and Hendricks 1979}).

On 1° February 2018, during a fieldwork at Parque Estadual das Nascentes do Rio Taquari (18°15'87" South, 53°41'767" West, 450 m) in Alcinopolis municipality, Mato Grosso do Sul state, Midwest Brazil, we captured an adult of B. moojeni (ZUFMS-REP 3318, SVL = 750 mm, tail = 170 mm) (Collection permit SISBIO #45889/1 and IMASUL #71/400151/2018). During the analysis of parasitism in the body of B. moojeni, we found two individuals of A. brongersmianus in the stomach of B. moojeni (ZUFMS-REP 3319, SVL = 60.68 mm and ZUFMS-REP 3320, SLV = 120.32 mm) (Fig. 1). All the three snakes are housed at Colecao Zoologica da Universidade Federal de Mato Grosso do Sul.

Figure 1 Two individuals of Amerotyphlops brongersmianus (SVL = 60.68 mm, ZUFMS-REP 3319 and SLV = 120.32 mm, ZUFMS-REP 3320) preyed by an adult of Bothrops moojeni (SVL = 750 mm, ZUFMS-REP 3318). 

There are few records of ophiophagy for the genus Bothrops (e.g. B. leucurus - ^{Fagundes et al. 2009}; B. atrox - ^{Oliveira and Martins 1996}; B. jararacussu - ^{De Roodt and Lanari 2015}; B. moojeni - ^{Nogueira et al. 2003}). Previous studies indicate that the genus is composed by generalist species, feeding on small rodents, amphibians, lizards, and fish (B. jararaca - ^{Hartmann et al. 2009}, B. atrox - ^{Bernarde and Abe 2010}).

Bothrops moojeni also shows an ontogenetic diet shift, varying from ectothermic to endothermic prey throughout its life (^{Nogueira et al. 2003}), with adults preying more frequently on mammals (^{França et al. 2008}). This is the first record of A. brongermianus as prey of B. moojeni. Besides our observation, this fossorial snake was already reported as prey of Bothrops leucurus Wagler, 1824 and Micrurus ibiboboca (Merrem, 1820) (^{Baptista et al. 2016}, ^{Marques et al. 2016}). Our record reinforces the known generalist habit of B. moojeni and indicates an opportunistic diet, with the snake feeding on preys that share and inhabits the same habitat.