Furthermore, males and workers of B. affinis also differ in terms of their appearance and body size. Males are typically slightly larger than workers ( in length), and have a few off-white/pale hairs present on tops of their heads. They also have black hair which sometimes streaks across the tops of their abdomens (which are typically yellow). Finally, males can even have pale yellow hair on their abdomens, as opposed to the normal shade of yellow observed in workers and queens.
