Marking system for L. verruculosus. 4a. Scanning electron micrograph (SEM) of a L. verruculosus female dorsal view. 4b. Photograph of a female louse marked using the techniques in this study. Separate green markings on the anterior and posterior dorsal abdomen represent host identification "Ada". The red portion is blood visible from louse feeding. 4c. Schematic drawings of the individualized codes assigned to lice. The three letters above each schematic are the host codes that refer to individual mouse lemurs. Scale bar is 500 μm. Louse drawing modified from Durden et al. (2010)  with copyright permission from Allen Press.