Two syntopic and remarkably similar new species of Sinella and Coecobrya from South China (Collembola, Entomobryidae) Author Zhang, Feng Author Qu, Ji-Qiang School of Life Science, Nanjing University, Nanjing (P. R. China) xtmtd. zf @ gmail. com zf@gmail.com Author Deharveng, Louis Muséum national d’Histoire naturelle, UMR 7205 CNRS, Origine, Structure et Évolution de la Biodiversité, case postale 50, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) deharven @ mnhn. fr deharven@mnhn.fr text Zoosystema 2010 2010-09-30 32 3 469 477 http://www.bioone.org/doi/abs/10.5252/z2010n3a8 journal article 10.5252/z2010n3a8 1638-9387 5167390 KEY TO THE 3+3-EYED SPECIES OF SINELLA BROOK, 1882 1. Unguiculus with a clear tooth on outer edge .............................................................. 2 — Unguiculus smooth or serrate or with a tiny tooth on outer edge ............................... 4 2. Mucronal basal spine long reaching at least half way from tip of subapical tooth to tip of apical tooth; Abd. III with 2+2 central macrochaetae; eyes equally distant ..................... ............................................................................................................... S. wui , China — Mucronal basal spine short, at most slightly exceeding tip of subapical tooth; eyes in two groups (2 anterior and 1 posterior) ............................................................................. 3 3. Abd. III with 1+1 central macrochaetae ......................................................................... .................................................... S. straminea sensu Wang & Christiansen 2000 , Japan — Abd. III with 2+2 central macrochaetae ............................................. S. triocula , China 4. Dental smooth part more than 5 times mucro in length ............................................. 5 — Dental smooth part less than 4 times mucro in length ................................................ 6 5. Inner basal paired teeth of unguis at 50% from inner edge base .... S. hexophthalma , Chile — Inner basal paired teeth of unguis at 65% from inner edge base ............. S. recens , USA 6. Abd. III with 3+3 central macrochaetae ............................................ S. sexoculata , USA — Abd. III with 1+1 central macrochaetae ...................................................................... 7 7. Abd. IV with 3+3 central macrochaetae ......................... S. colorata n. sp. , South China — Abd. IV with 7+7 central macrochaetae ............................ S. pseudostraminea , Vietnam