New species of Crossodonthina from Mangshan National Nature Reserve (Nanling National Forest Park), China (Collembola: Neanuridae) Author Jiang, Ji-Gang 0000-0002-4484-3312 College of Life and Environmental Science, Hunan University of Arts and Science. Changde 415000, Hunan, China. & College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, Hunan, China. Corresponding author. jjgangnanjing @ 163. com; https: // orcid. org / 0000 - 0002 - 4484 - 3312 Author Wang, Qing-Yun College of Arts, Hunan University of Arts and Science. Changde 415000, Hunan, China. text Zootaxa 2021 2021-11-25 5071 4 587 599 journal article 3298 10.11646/zootaxa.5071.4.7 07103a61-bc26-4fcc-8d1f-4e8bdcc5dbfa 1175-5326 5726552 EA11BDAF-C8EA-4699-9F9D-8FED3CF0B66A Key to Crossodonthina with 3+3 eyes 1 Macrochaetae on terga smooth and pointed................................................................ 2 - Macrochaetae on terga sheathed and blunt, or serrated........................................................ 5 2 Tubercle Di on Th. II–Abd. IV reduced, represented by some chaetae........................................... 3 - Tubercle Di on Th. II–Abd. IV well defined................................................................ 4 3 Cephalic tubercle Dl, L and So separated, tubercle De on Th. II with 1 chaetae................. C. nipponica Yosii, 1954 - Cephalic tubercle Dl, L and So fused, tubercle De on Th. II with 2 chaetae................ C. koreana Yosii & Lee, 1963 4 Cephalic tubercle Dl, L and So fused, mandible with 1 basal tooth.......................... C. formosana Yosii, 1965 - Cephalic tubercle Dl, L and So independent, mandible with 3 basal tooth........................ C. acuminata sp. nov. 5 Tubercle Di on Th. II–Abd. IV reduced, represented by some chaetae, no chaetae present on furcular remnant........................................................................................... altamontana Yoshii, 1981 - Tubercle Di on Th. II–Abd. IV well defined, at least 2 chaetae present on furcular remnant........................... 6 6 Tubercle Oc with 2 chaetae, tubercle Di, De, Dl on Th. I with 3, 2, 3 chaetae respectively......... C. radiata Salmon, 1941 - Tubercle Oc with 3 chaetae, tubercle Di, De, Dl on Th. I with 1, 2, 1 chaetae respectively............................ 7 7 Cephalic tubercle Dl separate from L and So, tubercle De on Th. II with 5 (4+s) chaetae............................. 8 - Cephalic tubercle Dl fused to L and So, tubercle De on Th. II with 4 (3+s) chaetae................................ 10 8 Cephalic tubercle L separate from So, mandible with 2 basal teeth......................... C . alatoserrata Yosii, 1965 - Cephalic tubercle L fused to So, mandible with at least 3 basal teeth............................................. 9 9 Mandible with 3 rami and five fine basal teeth........................... C. tiantongshana Xiong, Chen & Ying, 2005 - Mandible with 5 rami and 3 big basal teeth......................................... C. choui Jiang & Zhang, 2012 10 Cephalic tubercle Oc with 2 short macrochaetae and 1 long macrochaeta, mandible with 3 basal teeth and 4 rami, maxilla with 3 lamellae and one of them fringed............................................... C. tridentiens Yue & Yin, 1999 - Cephalic tubercle Oc with 1 microchaeta, 1 mesochaeta and 1 macrochaeta, mandible with 4 basal teeth and 5 rami, maxilla with 2 lamellae and none of them fringed................................................... C. clavata sp. nov.