Table A1. Average interspecific genetic divergence (uncorrected p-distance: % ± S.E.) between Rhiostoma species (below diagonal) calculated from 660-bp COI gene fragment sequences. Average intraspecific distances within each species are shown in bold. Taxa1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.1. R. cheliopegma sp. nov.3.17 ± 0.462. R. housei11.51 ± 1.013.67 ± 0.473. R. breviocollar sp. nov.12.61 ± 1.158.58 ± 0.920.15 ± 0.154. R. furfurosum sp. nov.13.67 ± 1.1513.26 ± 1.1614.03 ± 1.291.25 ± 0.275. R. samuiense16.21 ± 1.2717.82 ± 1.2818.56 ± 1.3816.85 ± 1.301.78 ± 0.326. R. asiphon17.28 ± 1.3118.02 ± 1.3617.54 ± 1.3616.95 ± 1.343.81 ± 0.630.72 ± 0.257. R. rhothonotaphrosa sp. nov.17.20 ± 1.3018.03 ± 1.3117.85 ± 1.3517.56 ± 1.373.39 ± 0.573.30 ± 0.610.93 ± 0.308. R. hainesi15.95 ± 1.3017.84 ± 1.3517.39 ± 1.3616.46 ± 1.343.58 ± 0.623.50 ± 0.673.32 ± 0.650.62 ± 0.309. R. jalorensis15.02 ± 1.1214.81 ± 1.1415.27 ± 1.2215.19 ± 1.1213.67 ± 1.0413.67 ± 1.0614.22 ± 1.0713.45 ± 1.046.69 ± 0.5510. R. platymorpha sp. nov.17.27 ± 1.3017.94 ± 1.3116.06 ± 1.3416.18 ± 1.3217.17 ± 1.4017.48 ± 1.4317.17 ± 1.3816.75 ± 1.4114.74 ± 1.170.19 ± 0.1011. R. tigrina sp. nov.16.90 ± 1.2917.64 ± 1.2916.87 ± 1.3516.83 ± 1.2917.24 ± 1.3417.41 ± 1.3417.00 ± 1.3116.77 ± 1.3516.26 ± 1.216.02 ± 0.871.03 ± 0.3112. R. haughtoni15.92 ± 1.3015.81 ± 1.2916.46 ± 1.3517.35 ± 1.3319.32 ± 1.3119.06 ± 1.3319.01 ± 1.3518.01 ± 1.3517.07 ± 1.2413.97 ± 1.3013.96 ± 1.26n/c13. R. dalyi14.64 ± 1.2215.43 ± 1.2516.00 ± 1.3515.88 ± 1.2818.13 ± 1.3018.70 ± 1.3818.70 ± 1.3218.01 ± 1.3615.79 ± 1.1714.93 ± 1.2516.13 ± 1.2715.30 ± 1.310.00 ± 0.0014. R. lannaense sp. nov.16.14 ± 1.2616.45 ± 1.2815.79 ± 1.3517.26 ± 1.3016.70 ± 1.2616.88 ± 1.2816.54 ± 1.2816.20 ± 1.2716.14 ± 1.1416.17 ± 1.3115.99 ± 1.3214.35 ± 1.3014.63 ± 1.231.59 ± 0.3015. R. abletti14.36 ± 1.1516.59 ± 1.3117.18 ± 1.3815.89 ± 1.2516.82 ± 1.2817.29 ± 1.3217.33 ± 1.3115.46 ± 1.2615.77 ± 1.1515.55 ± 1.3815.52 ± 1.3015.97 ± 1.3814.73 ± 1.2515.42 ± 1.251.85 ± 0.4216. R. simplicilabre14.59 ± 1.2016.69 ± 1.3116.15 ± 1.3617.43 ± 1.3616.78 ± 1.3217.36 ± 1.3517.16 ± 1.3215.77 ± 1.3316.07 ± 1.1716.48 ± 1.3717.00 ± 1.3116.07 ± 1.3814.99 ± 1.2916.31 ± 1.304.84 ± 0.730.00 ± 0.0017. R. morleti14.84 ± 1.1616.50 ± 1.2316.38 ± 1.3417.00 ± 1.3115.97 ± 1.2917.18 ± 1.3416.77 ± 1.3215.84 ± 1.3117.10 ± 1.2316.86 ± 1.3816.82 ± 1.3216.77 ± 1.3613.68 ± 1.1814.91 ± 1.266.77 ± 0.907.03 ± 0.920.46 ± 0.2618. R. cambodjense13.63 ± 1.2015.19 ± 1.2714.49 ± 1.2914.99 ± 1.2816.16 ± 1.3115.96 ± 1.3315.80 ± 1.2715.57 ± 1.3014.37 ± 1.1515.09 ± 1.3515.65 ± 1.3414.72 ± 1.2714.26 ± 1.2415.42 ± 1.2615.60 ± 1.2816.58 ± 1.3015.42 ± 1.280.15 ± 0.10

Published as part of Tongkerd, Piyoros, Tumpeesuwan, Sakboworn, Inkhavilay, Khamla, Prasankok, Pongpun, Jeratthitikul, Ekgachai, Panha, Somsak & Sutcharit, Chirasak, 2023, Systematic revision of the snorkel snail genus Rhiostoma Benson, 1860 (Gastropoda, Caenogastropoda, Cyclophoridae) with descriptions of new species, pp. 1 in ZooKeys 1142 on page 1, DOI: 10.3897/zookeys.1142.90097