Two new species of Centris (Heterocentris) Cockerell, from amazon region and Central Brazil (Hymenoptera, Apoidea)

Two species of Centris (Heterocentris) are described as new: Centris (Heterocentris) adunca from Venezuela (Amazonia) and Brazil (Acre) and Centris (Heterocentris) flavicans from Central Brazil (Goiás). The main character of C. (H.) adunca sp. nov. is a crooked tubercle implanted on the basis of clypeus with the apex truncate and slightly bifurcated and a unarmed labrum, and of C. (H.) flavicans sp. nov. the hairs on scutum and scutellum completely yellow. Centris labrosa Friese, 1899 is a new synonym for Centris terminata Smith, 1874