Key to species of Catarhinus 1. Coxal plates smooth................................................................................... 2 -. Coxal plates with granules or short lines................................................................... 9 2. Female genital coverflap smooth......................................................................... 3 -. Female genital coverflap with ridges or short lines........................................................... 5 3. Prodorsal shield smooth................................................ C. munnarensis Mohanasundaram, 1991 -. Prodorsal shield with lines.............................................................................. 4 4. Two incomplete admedian lines present on prodorsal shield............................. C. vulgaris Kuang et al., 1990 -. A “U-shape” line present at anterior of prodorsal shield............................... C. raii Mohanasundaram, 1984 5. Prodorsal shield smooth................................................................................ 6 -. Prodorsal shield with lines.............................................................................. 7 6. Opisthosoma with 85 annuli, empodium 10-rayed.............................. C. spontaneae Mohanasundaram, 1984 -. Opisthosoma with 38 annuli, empodium 4-rayed............................................ .. C. mori Huang, 2001 7. Dorsal annuli smooth............................................................... C. axonopi Boczek, 1960 -. Dorsal annuli with granules..............................................................................8 8. Prodorsal shield with two incomplete admdian lines..................................... C. palmifolies Huang, 2001 -. Prodorsal shield with many granules............................................. C. granatus Reis & Navia, 2011 9. Female genital coverflap smooth...................................................... C. sacchari Kuang, 1983 -. Female genital coverflap with ridges or short lines.......................................................... 10 10. Dorsal annuli smooth................................................................................. 11 -. Dorsal annuli with granules............................................................................ 13 11. Median line present on shield........................................................................... 12 -. Median line absent from shield................................................ C. imperatae Chandrapatya, 1993 12. Coxal plates with granules, seta h1 present............................................... C. sanguinalus sp. nov. -. Coxal plates with short lines, seta h1 absent....................................... C. microstegii Wei & Xie, 2009 13. Prodorsal shield with two short admedian lines and many pits.......................... .. C. pennisetosus Boczek, 1997 -. Prodorsal shield with short submedian lines laterally................................... C. tricholaenae Keifer, 1959

Published as part of Xue, Xiao-Feng & Li, Ni, 2020, Two new species of diptilomiopid mites (Acari: Eriophyoidea) from China, pp. 560-570 in Zootaxa 4896 (4) on page 564, DOI: 10.11646/zootaxa.4896.4.7, http://zenodo.org/record/4388063