The ‘Carpentarian Gap’ describes the separation of populations or pairs of sister species in the Top End from north-east Queensland by a belt of semi-arid plains and hill country in the hinterland of the Gulf of Carpentaria. Northern, less arid parts of the hinterland may also serve as a corridor connecting such populations. I report an abundance of observations and individuals of the Spotted Pea-blue (Euchrysops cnejus) and Black-spotted Grass-blue (Famegana nisa) within the Carpentarian Gap, suggesting that, contrary to existing range maps, the Gulf hinterland serves as a corridor rather than a gap for them. These observations demonstrate a need for more survey effort for butterflies in this region.