First, the pictures on the front page of our website change often, and do often include females — in fact they have already changed since your message was posted!
Second, you invite a comparison between our CS home page and the “CCSF CalWomenTech” page, which is tailored to a more specific purpose. There are a number of other pages on our website that are specifically oriented to outreach and diversity. The links below show some examples, including: (i) personal profiles of male and female undergraduates in our admissions materials; (ii) a description of our active CS Women’s group consisting of undergrads, grads, and faculty; and (iii) our various diversity outreach programs, including CAITE.
http://www.cs.umass.edu/admissions/undergrad-profiles
http://www.cs.umass.edu/people/cs-women
http://www.cs.umass.edu/outreach/outreach-programs
http://caite.cs.umass.edu/index.html