The external genitalia in males that is developmentally equivalent to the clitoris in females is the penis. Both the penis and the clitoris develop from similar embryonic structures called the genital tubercle, which appears early in fetal development.
During the early stages of development, both male and female embryos possess these genital structures. As development continues, the presence of certain hormones, particularly testosterone, influences the differentiation of these structures. In males, the genital tubercle elongates to form the penis, while in females, it develops into the clitoris.
Therefore, while they serve different reproductive functions in males and females, the anatomical origins of the penis and clitoris are remarkably similar, highlighting the shared developmental pathways of male and female genitalia.