FIGURES 13–18 in The beach flies of the Mascarene Islands (Diptera: Canacidae: Tethininae)

FIGURES 13–18. Male terminalia of beach flies. 13. Afrotethina aurisetulosa (Lamb), right surstyli in posteromesial view (after Munari 1988). 14. Pseudorhicnoessa rattii Munari, left lateral view (after Munari 1981). 15. Same, P. spinipes Malloch (after Sasakawa 1974). 16. Same, Dasyrhicnoessa insularis (Aldrich) (after Foster & Mathis 1998). 17. Same, D. vockerothi Hardy & Delfinado (after Sasakawa 1995). 18. Same, D. ferruginea (Lamb). Scale bars: 13 = 0.05 mm; 14–15 = 0.3 mm; 16–18 = 0.1 mm. Abbreviations: a sur—anterior surstylus; p sur—posterior surstylus.