25 April 2014
Vol 344, Issue 6182

About The Cover

Cover image expansion

COVER A pregnant female tsetse fly (Glossina morsitans), roughly equivalent in size to a housefly. Tsetse flies are the sole carriers of human African trypanosomiasis (sleeping sickness). See pages 349 and 380 for a description of the sequencing and annotation of the tsetse fly genome.
Photo: Geoffrey M. Attardo, Yale School of Public Health