Corresponding author: Donghui Wu (
Academic editor: L. Deharveng
A checklist of Chinese
The tribe
In the present paper, two new Chinese
Specimens were mounted in Marc André II solution, after clearing in lactic acid, and were studied using a Nikon Eclipse 80i microscope. Material is deposited in the Key laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun.
Labial papillae types are named after
Ant.–antennal segments, PAO–postantennal organ, Th.–thoracic segments, Abd.–abdominal segments, pchaeta–chaeta of row p, Sp–posterior Schaeta (e.g. on Abd. V or on head), ms–Smicrochaeta, pso–pseudocellus, apso–posterointernal pso on head, psx–parapseudocellus, psp–pseudopore, x–axial pseudopore of Abd. IV.
Pseudocelli, parapseudocelli and pseudopore formula are the number of pseudocelli, parapseudocelli or pseudopores by half tergum (dorsally) or halfsternum (ventrally) as follows: head anterior, head posterior/Th. I, Th. II, Th. III/Abd. I, Abd. II, Abd. III, Abd. IV, Abd. V (for instance: 43/144/54464).
Schaetae formula is the number of Schaetae by half tergum from head to Abd. VI (for instance: 11/011/222111).
Tibiotarsus chaetotaxy formula: total number of chaetae (number of basal chaetae, number of chaetae in row B, number of chaetae in distal row A+T, for instance: 19 (1, 7, 11).
1  Furca reduced to a finely granulated area, with 1+1 dental chaetae posteriorly ( 

–  Furca reduced to a small cuticular fold, with 1+1 or 2+2 dental chaetae posteriorly  2 
2  1+1 dental chaetae posteriorly ( 

–  2+2 dental chaetae in two rows posteriorly ( 
3 
3  First thoracic tergum with 0+0 pso  
–  First thoracic tergum with 1+1 pso  4 
4  The base of antenna with 4+4 pso  
–  The base of antenna with 3+3 pso  5 
5  Lateral ms absent on Th. III, 5+5 pso on Abd. IV and 4+4 pso on Abd. V  
–  Lateral ms present on Th. III, 4+4 pso on Abd. IV and 3+3 pso on Abd. V 
Holotype female, 4 female and 1 male paratypes. China: Jilin Province: Changbai Mountain Range (alt. 1763m,
Holotype and 5 paratypes on slides are deposited in the Key laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun.
Pso formula as 32/133/44454 dorsally and 11/000/00000 ventrally; subcoxa 1 of legs I–III with 1 pso each; psx formula as 00/000/222200 ventrally, absent dorsally; Schaetae formula as 11/011/222111 dorsally and 11/000/000100 ventrally; Ant. III sensory organ composed of 5 papillae, 5 guard chaetae, 2 small sensory rods, 2 granulated sensory clubs; Abd. V tergum with one dorsal axial chaeta (p0), Abd. VI with two axial chaetae (a0 and p0); tibiotarsi of legs I, II and III with 20, 20 and 19 chaetae; anal spines present on indistinct papillae, as long as inner edge of unguis.
Body color white in alcohol. Size 0.70–0.82 mm, holotype: 0.78 mm. Body slender and elongated.
Pseudocelli (pso) formula as 32/133/44454 dorsally and 11/000/00000 ventrally (
Schaetae cylindrical, well differentiated, formula as 11/011/222111 dorsallyand 11/000/000100 ventrally (
Head. Antennae short and distinctly segmented, 0.8 times as long as head. Length ratio of antennal segments I: II: III: IV = 1: 1.8: 1.8: 2. Ant. IV with two distinct thickened Schaetae, subapical organite with apex globular and basolateral ms just above posterior chaetae (
Body chaetotaxy. Ordinary chaetae differentiated in meso and macrochaetae. Th. I tergum with 7+7 chaetae dorsally (
Appendages. Subcoxa 1 of legs I–III with 4, 5 and 5 chaetae, subcoxa 2 with 1, 4 and 4 chaetae respectively. Tibiotarsi of legs I, II and III with 20 (1, 8, 11), 20 (1, 8, 11) and 19 (1, 7, 11) chaetae (
Female genital plate with 14 chaetae; in our specimens, the only male is juvenile. Anal valves with numerous acuminate chaetae; each lateral valve with a0 and 2a1; upper valves with chaetae a0, 2b1, 2b2, c0, 2c1, 2c2 (
Named after the mountain range where we found the new species.
Found in coniferous forest.
The new species has the same dorsal pseudocelli formula (32/133/44454) and number of papillae in Ant. III sensory organ (5) as
Holotype male, 2 female and 5 male paratypes. China: Jilin Province: Changbai Mountain Range (alt. 689m,
Holotype and 7 paratypes on slides are deposited in the Key laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun.
Pso formula as 43/144/54464 dorsally and 11/000/00000 ventrally; subcoxa 1 of legs I–III with 1 pso each; psx formula as 00/000/222401 ventrally and absent dorsally; Schaetae formula as 11/011/222111 dorsally and 11/000/000100 ventrally; Ant. III sensory organ composed of 5 papillae, 5 guard chaetae, 2 small sensory rods, 2 granulated sensory clubs; Abd. V without dorsal axial chaetae, Abd. VI with two axial chaetae (a0 and p0); tibiotarsi of legs I, II and III with 20, 20 and 19 chaetae; anal spines present on indistinct papillae, 0.75 times as long as inner edge of unguis.
Body color white in alcohol. Size 0.80–1.04 mm; holotype: 0.90 mm. Body slender and elongated.
Pseudocelli (pso) formula as 43/144/54464 dorsally and 11/000/00000 ventrally (
Schaetae cylindrical, well differentiated, formula as 11/011/222111 dorsally and 11/000/000100 ventrally (
Head. Antennae short and distinctly segmented, as long as head. Length ratio of antennal segments I: II: III: IV = 1: 2: 2: 2. Ant. IV with two distinct thickened Schaetae, subapical organite with apex globular and basolateral ms just above posterior chaetae (
Body chaetotaxy. Ordinary chaetae differentiated in meso and macrochaetae. Th. I tergum with 6+6 chaetae dorsally (
Appendages. Subcoxa 1 of legs I–III with 4, 5 and 5 chaetae, subcoxa 2 with 1, 4 and 4 chaetae respectively. Tibiotarsi of legs I, II and III with 20 (1, 8, 11), 20 (1, 8, 11) and 19 (1, 7, 11) chaetae (
Female genital plate with 17 chaetae (
Named for the similarity with the Korean species
Found in coniferous forest.
The new species is very similar to the species
Thanks should be given to Dr. Tang Xuguang (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences) who collected the specimens for our work. The present study was supported by the National Natural Sciences Foundation of China (NO. 31070467, 40901036, 41171047), Knowledge Innovation Programs of Chinese Academy of Sciences (KZCX2YWBR16), and the Fundamental Research Funds for the Central Universities (NO. 200810008 and 200905022).