S. Mahunka szerk.: Folia Entomologica Hungarica 51. (Budapest, 1990)
4 (7) Bothridial squama situated above the trichobothrium. Anogenital cleft oblique and well developed. 5 (6) Palp 5-segmented. All setae of tarsus IV normal Oribotritia Jacot, 1924 6 (5) Palp 4-segmented. Seta u' on tarsus IV strongly thickened, spiniform Berndotritia Mahunka, 1987 7 (4) Bothridial squama situated below the trichobothrium. Anogenital cleft weakly developed, short and transversal Maerkelotritia Hemmer, 1967 8 (3) Posterior median apodeme present. 9(10) Genu of leg IV with a solenidium _ , ., , ... -,„„„,_ 1Q--,Q ^ Protoribotritia Jacot, 1938 10 (9) Genu of leg IV without solenidium 11(12) Seta d_ on tibia IV very long and not coupled with solenidium . No lateral carina on the aspis Sabacarus Ramsay et Sheals, 1969 12(11) Seta d on tibia IV short and coupled with solenidium. Aspis at least with one lateral carina on each side ( Mesotritia Forsslund, 1963) 13(14) Famulus (£) bifurcate . Aspis with two lateral carinae on each side subgen . Mesotritia Forsslund, 196 3 14(13) Famulus simple, bacilliform. Aspis with one lateral carina subgen. P erutritia Märkel, 1964 15 (2) Genito-aggenital suture incomplete, genital and aggenital plates fused anteriorly . 16(19) Anogenital cleft well developed. Aspis with two carinae on each side ( Indotritia Jacot, 1929) 17(18) Ano-adanal suture complete subgen. Indotritia Jacot, 1929 18(17) Posterior part of ano-adanal suture absent, anal and adanal plates fused posteriorly subgen. Afrotritia Mahunka, 1988 19(16) Anogenital cleft agsent . Aspis only with one carina on each side Zeaotritia Mahunka, 1988 20 (1) Genito-aggenital suture entirely reduced, the two plates completely fused with each other . 21(24) Anogenital cleft present. Genu of leg IV with solenidium and seta. 22(23) Posterior median apodeme absent. One pair of exobothridial setae present. Palp 5- or'4-segmented „ . . . . . „ . . nQtQ ^ ^ Austrotritia Sellnick, 1959 23(22) Posterior median apodeme present. Two pairs of exobothridial setae. Palp 3-segmented Terratritia Ramsay et Sheals, 1969 24(21) Anogenital cleft absent. Genu of leg IV without seta or solenidium Paratritia Moritz, 1966 Key for the genera of Euphthiracaridae Jacot, 1930 1 (8) Two pairs of interlocking triangles present. 2 (3) Anogenital cleft present. Rostral setae arising between the lamellar ones Pocsia Mahunka, 1983 3 (2) Anogenital cleft absent. Rostral setae arising in normal position. 4 (5) Bothridial squama situated above the bothridium. Trochanters III and IV with one seta each „ . .... . , . no _ Sumatrotritia Mahunka, 1989
