Thalassaphorura Bagnall 1949

• Main Authors: Sun, Xin, Chen, Jian-Xiu, Deharveng, Louis
• Format: Text
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Onychiuridae; Thalassaphorura; Pacific; New Zealand; Diaz; Jaya; Turukhansk; Fennoscandia
• Online Access: https://dx.doi.org/10.5281/zenodo.5668514; https://zenodo.org/record/5668514

Key to world species of the genus Thalassaphorura Bagnall, 1949 1 Th. I without pso, antennal base usually with 2 pso, PAO with more than 44 vesicles, large size (more than 3 mm). ....................................................................................................................................saccardyi (Denis, 1935); Algeria - Other combination of characters................................................................................................................................. 2 2 Antennal base with 3 pso............................................................................................................................................. 5 - Antennal base with 4 pso............................................................................................................................................ 3 3 Head with 4 + 4 posterior pso, ventral tube chaetae as 1 + 1 / 7–8 + 7–8 / 2 + 2, AS equals 0.7 unguis............................................................................................................ halophila (Bagnall, 1937) sensu Fjellberg 1998; Northern Holarctic - Head with 2 + 2 posterior pso, ventral tube chaetae less than above............................................................................. 4 4 Ventral tube with 4 + 4 distal chaetae, AS absent, Th. I with 3 + 3 pso, AS absent..................................................................................................................................................................... hoguei (Palacios-Vargas & Díaz, 1995); Mexico - Ventral tube with 7 + 7 distal chaetae, AS present, Th. I with 2 + 2 pso, AS equals 0.8 unguis....................................................................................................................................................................... tamurai (Yue & Yin, 2000); China 5 AIIIO with 4 papillae................................................................................................................................................... 6 - AIIIO with 5 papillae................................................................................................................................................... 9 6 Dorsal pso formula 32 / 122 / 22332, AS present and small............................... butrosi (Christiansen, 1956); Lebanon - Dorsal pso formula not as above, AS absent.............................................................................................................. 7 7 Dorsal pso formula 32 / 133 / 33333.................................................................................. franzi (Stach, 1946); Austria - Dorsal pso formula 32 / 233 / 33343............................................................................................................................... 8 8 Ventral pso formula 11 /000/01000, ventral tube chaetae as 0+0/ 6 + 6 / 1 + 1......................................................................................................... cryptopyga (Denis 1931) sensu Najt & Weiner, 1997; Neotropics, Pacific islands, Indonesia - Ventral pso formula 11 /000/01120, ventral tube chaetae as 1 + 1 / 6 + 6 / 2 + 2..................................................................... ...............................................................................................................tovtrensis (Kaprus’ & Weiner, 1995); Ukraine 9 Th. I without pso........................................................................................................................................................ 10 - Th. I with pso............................................................................................................................................................. 12 10 Head with 3 + 3 posterior pso, unguiculus with basal lamella, AS as long as unguis................................................................................................................................................. alborufescens (Vogler, 1895) sensu Gisin (1957); Europe - Head with 2 + 2 posterior pso, unguiculus without basal lamella............................................................................... 11 11 Abd. I–III with 2 + 2 pso, vesicle number of PAO as 20–22, AS equals 0.9 unguis................................................................................................................................................................................ bagnalli (Salmon, 1959); Great Britain - Abd. I–III with 3 + 3 pso, vesicle number of PAO as 30–38, AS equals 0.7 unguis....................................................... ...................................................................................................................... kirgisica (Martynova, 1971); Kirghizstan 12 Th. I with 1 + 1 pso...................................................................................................................................................... 13 - Th. I with 2 + 2 pso...................................................................................................................................................... 19 13 Dorsal pso formula 32 / 11 (3) 1 (2)/ 22 (3) 2 (3) 2 (3) 3, AS equals 0.9 unguis.............................................................................................................................................................. moniezi (Bagnall, 1935) sensu Salmon (1959); Great Britain - Dorsal pso formula not as above................................................................................................................................ 14 14 Th. II–III with 2 + 2 pso each....................................................................................................................................... 15 - Th. II–III with 3 + 3 pso each...................................................................................................................................... 16 15 Ventral pso formula 11 /000/01000, ventral tube chaetae as 1 + 1 / 6 + 6 / 1 + 1, subcoxa 1 of legs I, II and III with 1, 1 and 1 pso respectively, AS equals 0.2–0.25 unguis........................................................................ reducta sp. nov. China - Ventral pso formula 11 /000/01010, ventral tube chaetae as 0+0/ 6 + 6 / 1 + 1, subcoxa 1 of legs I, II and III with 2, 2 and 2 pso respectively, AS equals 0.4 unguis.................................................................................... bapen sp. nov. China 16 Ventral side of abdomen without pso, AS equals 0.7 unguis.......... thalassophila (Bagnall, 1937); Northern Europe 1 - Ventral side of abdomen with pso.............................................................................................................................. 17 17 Dorsal pso formula on Abd. I– V 33334, ventral pso formula 0 1120, subcoxa 1 of legs I, II and III with 1, 1 and 1 pso respectively, AS equals 0.3 unguis, d0 absent.............................. jailolonis (Yoshii & Suhardjono, 1992); Indonesia - Dorsal pso formula on Abd. I–V not as above; subcoxa 1 of legs I, II and III with 2, 2 and 2 pso respectively..... 18 18 Chaetae on ventral tube as 1 + 1 / 7 + 7 (8)/ 2 + 2, dorsal pso formula on Abd. I–V 333 (4) 5 (4) 4 (3), ventral pso formula 0111(2)0, AS equals 0.5 unguis................... debilis (Moniez, 1890); Western and northern Europe, littoral species 1 - Chaetae on ventral tube as 0+0/ 6 + 6 / 2 + 2, dorsal pso formula on Abd. I– V 33343, ventral pso formula 0 1110, AS equals 0.75 unguis..................................................................................... grandis sp. nov. China, forest soil species 19 Dorsal pso formula 32 / 233 / 33343.............................................................................................................................. 20 - Dorsal pso formula not as above............................................................................................................................... 31 20 Distal whorl of tibiotarsi with 7 chaetae..................................................................................................................... 21 - Distal whorl of tibiotarsi with 9 chaetae................................................................................................................... 23 21 Dorsal S-chaetae on head 2 + 2................................................................................................................................... 22 - Dorsal S-chaetae on head 1 + 1, AS as long as unguis........................................................................................................................................................................................ petaloides (Rusek, 1981); Irak, New Caledonia, Hawaii, China 22 Unguiculus very small, less than 5 times the length of inner edge of unguis, ventral side of head with 1 + 1 pso, AS equals 0.9 unguis............................................................................................. thaibinhensis (Nguyen, 2001); Vietnam - Unguiculus equals 0.5 inner edge of unguis, with basal lamella, ventral side of head with 2 + 2 pso, AS equals 0.7 unguis............................................................................................................................... tibiotarsalis sp. nov. China 23 Ventral pso formula 11 /000/01110............................................................................................................................ 24 - Ventral pso formula 11 /000/01120 or 11 /000/ 11120.................................................................................................. 25 24 Th. I with 7 + 7 chaetae, length 1.4 mm........................................................................................................................................................ duplopunctata (Strenzke, 1954) sensu Fjellberg 1998; Northern Holarctic, mostly littoral species - Th. I with 5 + 5 chaetae, AS equals 0.2 unguis, length 0.8–1.1 mm....... pomorskii sp. nov. China, forest soil species 25 Ventral pso formula 11 /000/ 11120, dorsal S-chaetae on head 1 + 1, AS as long as unguis, unguiculus equals 0.7 inner edge of unguis, without basal lamella................................................................ kwona (Thibaud & Lee, 1994); Korea - Ventral pso formula 11 /000/01120............................................................................................................................. 26 26 4 + 4 chaetae between two posterior inner pso on head, chaetae on ventral tube as 1 + 1 / 6 + 6 / 2 + 2, AS equals 0.5 unguis .................................................................................................. lifouensis (Thibaud & Weiner, 1997); New Caledonia - 3 + 3 chaetae between two posterior inner pso on head............................................................................................... 27 27 PAO with about 10–13 vesicles, dorsal S-chaetae formula 2 /011/ 11101, unguiculus without basal lamella, as long as unguis, ventral tube chaetae as 1 + 1 / 5 + 5 / 2 + 2, Th. I with 6 + 6 (7 + 7) chaetae, AS equals 0.4 unguis.............................. ........................................................................................................................................ tenuis Babenko, 2007; Russia - PAO with more than 20 vesicles................................................................................................................................. 28 28 Th. I with 5 + 5 chaetae, unguiculus with basal lamella............................................................................................... 29 - Th. I with more than 5 + 5 chaetae, unguiculus without basal lamella, AS equals 0.8 unguis.................................... 30 29 Unguiculus equals 0.75 inner edge of unguis, S-chaetae not differentiated, AS equals 0.7 unguis, Abd. VI with one axial chaeta dorsally (m0) ............................................... zschokkei (Handschin, 1919) sensu Pomorski, 1998; Europe - Unguiculus equals 0.5 inner edge of unguis, S-chaetae differentiated, AS equals unguis, Abd. VI with two axial chaetae dorsally (a0 and m0)....................................................................................................... tiani sp. nov. China 30 Chaetae on ventral tube as 0+0/ 6–7 + 6–7 /0+0, labial type AC, labial proximal chaetae as 7, male ventral organ pres- ent................................................................................................................. qixiaensis Yan, Shi & Chen, 2006; China - Chaetae on ventral tube as 1 + 1 / 6–7 + 6–7 / 1 + 1 (2 + 2), labial type A, labial proximal chaetae as 6, strictly parthenoge- netic ............................................................................... encarpata (Denis, 1931) sensu Fjellberg 1998; Cosmopolitan 31 Dorsal pso formula 32 / 233 / 33333............................................................................................................................. 32 - Dorsal pso formula not as above................................................................................................................................ 35 32 PAO with about 45 vesicles, AS equals 0.4 unguis....................................................... ishikawai (Yosii, 1956); Japan - PAO with less than 40 vesicles................................................................................................................................. 33 33 Unguiculus with basal lamella, PAO with about 25 vesicles, AS equals 0.7 unguis................................................................................................................................................................................... guineaensis (Salmon, 1965); Guinea - Unguiculus without basal lamella.............................................................................................................................. 34 34 Ventral pso formula 11 /000/ 11200, chaetae on ventral tube as 1 + 1 / 6 + 6 / 2 + 2...................................................................................................................................................................................... yodai (Yosii, 1966); Nepal, China, Japan - Ventral pso formula 1 /000/ 11120, chaetae on ventral tube as 0+0/ 6 + 6 / 2 + 2........ yolandae (Izarra, 1971); Venezuela 35 Dorsal pso formula 32 / 2 (1) 33 / 333 (4) 5 (4) 4 (3), ventral pso formula 11 /000/0111(2)0, chaetae on ventral tube as 1 + 1 / 7 + 7 (8)/ 2 + 2, AS equals 0.5 unguis............................................................. debilis (Moniez, 1890); Northern Europe 1 - Dorsal and ventral pso formula not as above............................................................................................................. 36 36 Dorsal pso formula 32 / 233 / 3333 (4) 2, ventral pso formula 11 /000/00010, chaetae on ventral tube as “ 9–10 + 9–10 ” according to original description, AS equals 0.5 unguis.............................................. orientalis (Stach, 1964); China - Dorsal pso formula 32 / 233 / 33342, ventral pso formula 1 / 111 /00000, chaetae on ventral tube as 1 + 1 / 6 + 6 / 1 + 1, AS equals about 0.7 unguis.............................................................................................. ghatensis (Prabhoo, 1971); India : Published as part of Sun, Xin, Chen, Jian-Xiu & Deharveng, Louis, 2010, Six new species of Thalassaphorura (Collembola, Onychiuridae) from southern China, with a key to world species of the genus, pp. 20-38 in Zootaxa 2627 on pages 22-24, DOI: 10.5281/zenodo.198236 : {"references": ["Bagnall, R. 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