FIGURES 9–17. 9–13 in Subfossils of extinct and extant species of Simuliidae (Diptera) from Austral and Cook Islands (Polynesia): anthropogenic extirpation of an aquatic insect?

FIGURES 9–17. 9–13. Simulium (I.) rurutuense. Fig. 9. Dorsal view of head of extant larva. Vaipapa Stream, Rurutu (scale bar 0.1 mm). Fig. 10. Hypostoma and postgenal cleft of extant larva (scale bar 0.1 mm). Fig. 11. Hypostoma of extant larva (scale bar 0.02 mm). Fig. 12. Hypostoma, postgenal cleft and genae of subfossil larva. Mihiura Swamp, Tubuai (scale bar 0.1 mm). Fig. 13. Hypostoma of subfossil larva (scale bar 0.05 mm). 14–17. Simulium (I.) raivavaense. Near Rairua, Raivavae. Fig. 14. Frontoclypeal apotome of extinct subfossil larva—note anteromedial palatal brush (scale bar 0.05 mm). Fig.15. Hypostoma, postgenal cleft and genae of extinct subfossil larva (scale bar 0.05 mm). Fig. 16. Hypostoma of last instar of extinct subfossil larva (scale bar 0.02 mm). Fig. 17. Hypostoma of probable penultimate instar of larva (scale bar 0.02 mm).