Head, hypostomal cavity, raised ridge running along outside edge of cavity just before it bends 90 degrees to the side at the front of the head

Strongly and abruptly reduced just before bend

© Copyright Tracy Zarrillo 2010
Osmia bucephala, female, hypostomal cavity carina
I_TZA44


© Copyright Tracy Zarrillo 2010
Osmia bucephala, female, hypostomal cavity carina
I_TZA45