As an organismal biologist, I like to imagine discovering a new species. In the course of researching a little departmental matter, I realized that our department can lay claim to introducing three new species to the world of science: a fish, a flower, and an insect.
McDonald JA. 2008. Merremia cielensis (Convolvulaceae: Merremieae): a new species and narrow endemic from tropical Northeast Mexico. Systematic Botany 33: 552-555. http://dx.doi.org/10.1600/036364408785679833
Terry MD, Whiting MF. 2012. Zorotypus novobritannicus n. sp., the first species of the order Zoraptera (Zorotypidae) from the Australasian Ecozone. Zootaxa 3260: 53-61. http://www.mapress.com/zootaxa/2012/f/z03260p061f.pdf
Plus, some of our faculty members described a new snail species, although that was work she did before they joined our department.
Perez KE. 2011. A new species of Praticolella (Gastropoda: Polygyridae) from northeastern Mexico and revision of several species of this genus. The Nautilus 125:113-126. http://www.northamericanlandsnails.com/publications/The_Nautilus_125_113-126.pdf
DeYoe HR, Stockwell DA, Bidigare RR, Latasa M, Johnson P, Hargraves P, Suttle CA. 1997. Description and characterization of the algal species Aureoumbra lagunensis gen. et sp. nov. and referral of Aureoumbra and Aureococcus to the Pelagophyceae. Journal of Phycology 33: 1042-1048.
Picture from here.