Spitzer color image centered on the G316.8−0.1 radio source (ch1 = violet, ch2 = cian, ch3 = yellow, ch4 = red). Large yellow hollow circles indicate Regions A, B, and C presented in Fig. 1. Symbols are YSOs as presented in Fig. 2. Yellow and orange symbols indicate Class I and II YSOs, respectively. Circles correspond to those identified using K band and WISE data, triangles those using only WISE data, and squares using GLIMPSE data. Big red squares indicate objects listed in Table B.3. Bubbles S109, S110, and S111 presented by Churchwell et al. (2006) are identified.