Phylogeny of Australian Acerentomidae species (Protura: Acerentomidae), with a key to identification Author Shrubovych, Julia Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, ul. Sławkowska 17, 31 - 016 Kraków, Poland & State Museum of Natural History, Ukrainian National Academy of Sciences, Teatral’na St. 18, UA 79008 L’viv, Ukraine & Institute of Soil Biology and Biogeochemistry, Biology Centre CAS, Na Sádkách 7, CZ- 370 05, Česke Budĕjovice, Czech Republic Author D’Haese, Cyrille MECADEV, UMR 7179 CNRS MNHN, Muséum National d’Histoire Naturelle, CP 50 Entomology, 45 rue Buffon, 75231 Paris cedex 05, France text Zootaxa 2024 2024-05-17 5453 1 86 104 http://dx.doi.org/10.11646/zootaxa.5453.1.4 journal article 10.11646/zootaxa.5453.1.4 1175-5326 11233458 6543A9F4-67A2-475A-AD10-863378CB6364 Key to Australian Acerentomidae species 1. Abdominal legs II and III with 3 setae..................................................................... 2 - Abdominal legs II and III with 2 setae.................................................................... 12 2. Labial palps with apical tuft of setae, abdominal sternite VIII with 6 setae ( Acerentulus )............................. 3 - Labial palps without apical tuft of setae, abdominal sternite VIII with 4 setae...................................... 4 3. Sensillum a long, extending past base of t2 , a’ short and slender, not reaching base of b’ .................................................................................................... Acerentulus confinis (Berlese, 1908) 1 - Sensillum a short, not reaching base of t2 , a’ long and broadened, extending past base of b’ ...................................................................... Acerentulus sexpinatus Womersley, 1936 (South and Western Australia ) 4. Striate band with distinct, parallel-sided striae ( Australentulus )................................................. 5 - Striate band reduced, striae invisible, hoog-shaped design presents.. Amphientulus ambiguus ( Tuxen, 1967 ) ( South Australia ) 5. Abdominal tergite I with P1a setae....................................................................... 6 - Abdominal tergite I without P1a setae..................................................................... 9 6. Tergite VII with 8 A -setae (setae A1 present)................................................................ 7 - Abdominal tergite VII with 6 A -setae (setae A1 absent)............ Australentulus victoriae Tuxen, 1967 ( South Australia ) 7. Labrum protruded, LR = 7.0, comb with 15 long teeth...... Australentulus occidentalis ( Womersley, 1932 ) (West Australia ) - Labrum not protruded, LR more than 10, comb with less than 10 teeth........................................... 8 8. Foretarsal sensillum a long and b short, both reaching base of seta γ3 , comb with 9 teeth.................................................................................... Australentulus noseki Tuxen, 1967 (West Australia , India ) - Foretarsal sensillum a short, reaching base of sensillum t2 , b long, extending past base of seta γ3 , comb with 5 teeth................................................. Australentulus westraliensis ( Womersley, 1932 ) (West Australia , Victoria ) 9. Labrum long, LR = 5.0, abdominal tergite V with 8 A -setae (setae A4 present), tergite VII with 18 P -setae ( P3a present).................................................. Australentulus reginae Tuxen, 1967 ( West Australia , type area only) - Labrum short, LR more than 10.0, abdominal tergite V with 6 A -setae (setae A4 absent), abdominal tergite VII with 16 P -setae (setae P3a absent).................................................................................... 10 10. Sensillum a sword-shaped; b short, reaching base of seta γ3 ; sensillum a’ slender; comb with 9 long teeth...................................................................... Australentulus intermedius Tuxen, 1967 (West Australia ) - Sensillum a parallel-sided; b longer, extending pass base of seta γ3 ; sensillum a’ broadened; comb with 5–8 short teeth... 11 11. Sensillum b short, reaching base of seta γ3 , e not reaching the base of claw, comb with 8 short teeth..................................................................... Australentulus australensis ( Womersley, 1932 ) (West Australia ) 2 - Sensillum b longer, extending past base of seta γ3 , e reaching the base of the claw, comb with 6 short teeth................................................................... Australentulus tillyardi ( Womersley, 1932 ) ( South Australia ) 12. Abdominal legs II and III with long subapical and very short medial apical setae.................................. 13 - Abdominal legs II and III with lateral apical seta more than half as long as the subapical setae....................... 16 13. Striate band with distinct, parallel-sided striae.................................................................... Gracilentulus gracilis (Berlese, 1908) 3 (Europe, Morocco , South Africa , North America, New Zealand , South Australia) - Striate band reduced to two lines, striae invisible........................................................... 14 14. Foretarsal sensillum t1 baculiform, abdominal tergite VI with 8 A -setae, abdominal sternite I with 4 P -setae....................................................... Berberentulus capensis (Womersley, 1931) (warmer regions of the world) - Foretarsal sensillum t1 claviform, abdominal tergite VI with 6 A -setae, abdominal sternite I with 2 P -setae............. 15 15. Abdominal tergite VII with 2 A -setae ( A5 ) and 16 P -setae (absence of P3a )..................................................................................... Baculentulus pseudonitidus Tuxen & Imadaté, 1975 (West Australia ) - Abdominal tergite VII with 4 A -setae ( A4 , 5 ) and 18 P -setae (presence of P3a )..... Baculentulus breviunguis (Condé, 1961) 4 16. Striate band on VIII with easily visible striae, abdominal sternite VIII with 6 setae, accessory setae sensilliform on abdominal segments I–VI ( Tasmanentulus )......................................................................... 17 - Striate band on VIII without striae, “hook-shaped” design present, abdominal sternite VIII with 4 setae, accessory setae setiform on abdominal segments I–VI ( Amphientulus ).............................................................. 18 17. Foretarsal sensillum b’ present, tergite VII with 8 A -setae ( A1 , 2 , 4 , 5 ).............................................................................. Tasmanentulus tasmanicus ( Tuxen, 1967 ) (Western and South Australia, Tasmania ) - Foretarsal sensillum b’ absent, tergite VII with 6 A -setae ( A2 , 4 , 5 )........ Tasmanentulus similis ( Tuxen, 1967 ) ( Tasmania ) 18. Abdominal tergites I–VI with P1a setae.................................................................. 19 - Abdominal tergites I–VI without P1a setae................................................................ 20 19. Abdominal sternite I with 4 P -setae, tergite VII with 8 A -setae (setae A1 present), foretarsal sensillum a’ sword-shaped, b’ slender, length of foretarsus 90 μm............................. Amphientulus validus ( Tuxen, 1967 ) ( South Australia ) - Abdominal sternite I with 2 P -setae, tergite VII with 6 A -setae (setae A1 absent), foretarsal sensillum a’ slender, b’ broadened, length of foretarsus 55 μm.................................. Amphientulus aestuarii ( Tuxen, 1967 ) ( South Australia ) 20. Abdominal sternite I with 4 P -setae...................................................................... 21 - Abdominal sternite I with 2 P -setae...................................................................... 22 21. Abdominal tergite VII with 8 A -setae (setae A1 present); comb with 8 very short teeth; foretarsal sensillum a long, reaching base of seta γ3 ; length of foretarsus 50 μm....................... Amphientulus grangarae ( Tuxen, 1967 ) ( Western Australia ) - Abdominal tergite VII with 6 A -setae (setae A1 absent); comb with semicircle hind margin and 5 teeth of different lengths; sensillum a short, reaching base of sensillum t2 ; length of foretarsus 75 μm................................................................................................ Amphientulus sinuous ( Tuxen, 1967 ) ( South Australia ). 22. Abdominal tergites II–VI with P4a setae, tergite VII with 8 A -setae (seta A1 sometimes present asymmetrically); foretarsal sensilla a and g slender; length of foretarsus 80 μm..................... Amphientulus markstivensi sp. nov. ( Tasmania ) - Abdominal tergites II–VI without P4a setae; tergite VII with 6 A -setae (seta A1 absent); foretarsal sensilla a and g broadened; length of foretarsus 55 μm.................................... Amphientulus alienus ( Tuxen, 1967 ) ( South Australia )