FIGURES 1–8. 1–4 in Chewing lice of the genus Myrsidea (Phthiraptera: Menoponidae) from New World warblers (Passeriformes: Parulidae) from Costa Rica, with descriptions of four new species

FIGURES 1–8. 1–4. Myrsidea basileuteri sp. nov. 1. Hypopharyngeal sclerites. 2. Female dorsoventral thorax and abdomen. 3, Male sternite II. 4. Male genital sac sclerite. 5–8. Myrsidea myiobori sp. nov. 5. Hypopharyngeal sclerites. 6. Female dorsoventral thorax and abdomen. 7. Male sternite II. 8. Male genital sac sclerite. Scales 0.50 mm (Figs. 2, 6), 0.10 mm (Figs. 3, 7), 0.05 mm (Figs. 1, 4, 5, 8).